1424 lines
68 KiB
Plaintext
1424 lines
68 KiB
Plaintext
-- Creating an index on a partitioned table makes the partitions
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-- automatically get the index
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create table idxpart (a int, b int, c text) partition by range (a);
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-- relhassubclass of a partitioned index is false before creating any partition.
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-- It will be set after the first partition is created.
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create index idxpart_idx on idxpart (a);
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select relhassubclass from pg_class where relname = 'idxpart_idx';
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relhassubclass
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----------------
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f
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(1 row)
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-- Check that partitioned indexes are present in pg_indexes.
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select indexdef from pg_indexes where indexname like 'idxpart_idx%';
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indexdef
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-----------------------------------------------------------------
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CREATE INDEX idxpart_idx ON ONLY public.idxpart USING btree (a)
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(1 row)
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drop index idxpart_idx;
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create table idxpart1 partition of idxpart for values from (0) to (10);
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create table idxpart2 partition of idxpart for values from (10) to (100)
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partition by range (b);
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create table idxpart21 partition of idxpart2 for values from (0) to (100);
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-- Even with partitions, relhassubclass should not be set if a partitioned
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-- index is created only on the parent.
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create index idxpart_idx on only idxpart(a);
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select relhassubclass from pg_class where relname = 'idxpart_idx';
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relhassubclass
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----------------
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f
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(1 row)
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drop index idxpart_idx;
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create index on idxpart (a);
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select relname, relkind, relhassubclass, inhparent::regclass
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from pg_class left join pg_index ix on (indexrelid = oid)
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left join pg_inherits on (ix.indexrelid = inhrelid)
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where relname like 'idxpart%' order by relname;
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relname | relkind | relhassubclass | inhparent
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-----------------+---------+----------------+----------------
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idxpart | p | t |
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idxpart1 | r | f |
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idxpart1_a_idx | i | f | idxpart_a_idx
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idxpart2 | p | t |
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idxpart21 | r | f |
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idxpart21_a_idx | i | f | idxpart2_a_idx
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idxpart2_a_idx | I | t | idxpart_a_idx
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idxpart_a_idx | I | t |
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(8 rows)
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drop table idxpart;
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-- Some unsupported features
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create table idxpart (a int, b int, c text) partition by range (a);
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create table idxpart1 partition of idxpart for values from (0) to (10);
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create index concurrently on idxpart (a);
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ERROR: cannot create index on partitioned table "idxpart" concurrently
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drop table idxpart;
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-- Verify bugfix with query on indexed partitioned table with no partitions
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-- https://postgr.es/m/20180124162006.pmapfiznhgngwtjf@alvherre.pgsql
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CREATE TABLE idxpart (col1 INT) PARTITION BY RANGE (col1);
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CREATE INDEX ON idxpart (col1);
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CREATE TABLE idxpart_two (col2 INT);
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SELECT col2 FROM idxpart_two fk LEFT OUTER JOIN idxpart pk ON (col1 = col2);
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col2
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------
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(0 rows)
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DROP table idxpart, idxpart_two;
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-- Verify bugfix with index rewrite on ALTER TABLE / SET DATA TYPE
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-- https://postgr.es/m/CAKcux6mxNCGsgATwf5CGMF8g4WSupCXicCVMeKUTuWbyxHOMsQ@mail.gmail.com
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CREATE TABLE idxpart (a INT, b TEXT, c INT) PARTITION BY RANGE(a);
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CREATE TABLE idxpart1 PARTITION OF idxpart FOR VALUES FROM (MINVALUE) TO (MAXVALUE);
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CREATE INDEX partidx_abc_idx ON idxpart (a, b, c);
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INSERT INTO idxpart (a, b, c) SELECT i, i, i FROM generate_series(1, 50) i;
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ALTER TABLE idxpart ALTER COLUMN c TYPE numeric;
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DROP TABLE idxpart;
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-- If a table without index is attached as partition to a table with
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-- an index, the index is automatically created
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create table idxpart (a int, b int, c text) partition by range (a);
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create index idxparti on idxpart (a);
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create index idxparti2 on idxpart (b, c);
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create table idxpart1 (like idxpart);
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\d idxpart1
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Table "public.idxpart1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | integer | | |
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c | text | | |
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alter table idxpart attach partition idxpart1 for values from (0) to (10);
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\d idxpart1
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Table "public.idxpart1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | integer | | |
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c | text | | |
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Partition of: idxpart FOR VALUES FROM (0) TO (10)
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Indexes:
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"idxpart1_a_idx" btree (a)
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"idxpart1_b_c_idx" btree (b, c)
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\d+ idxpart1_a_idx
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Index "public.idxpart1_a_idx"
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Column | Type | Key? | Definition | Storage | Stats target
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--------+---------+------+------------+---------+--------------
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a | integer | yes | a | plain |
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Partition of: idxparti
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No partition constraint
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btree, for table "public.idxpart1"
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\d+ idxpart1_b_c_idx
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Index "public.idxpart1_b_c_idx"
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Column | Type | Key? | Definition | Storage | Stats target
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--------+---------+------+------------+----------+--------------
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b | integer | yes | b | plain |
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c | text | yes | c | extended |
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Partition of: idxparti2
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No partition constraint
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btree, for table "public.idxpart1"
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-- Forbid ALTER TABLE when attaching or detaching an index to a partition.
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create index idxpart_c on only idxpart (c);
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create index idxpart1_c on idxpart1 (c);
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alter table idxpart_c attach partition idxpart1_c for values from (10) to (20);
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ERROR: "idxpart_c" is not a partitioned table
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alter index idxpart_c attach partition idxpart1_c;
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select relname, relpartbound from pg_class
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where relname in ('idxpart_c', 'idxpart1_c')
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order by relname;
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relname | relpartbound
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------------+--------------
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idxpart1_c |
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idxpart_c |
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(2 rows)
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alter table idxpart_c detach partition idxpart1_c;
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ERROR: ALTER action DETACH PARTITION cannot be performed on relation "idxpart_c"
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DETAIL: This operation is not supported for partitioned indexes.
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drop table idxpart;
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-- If a partition already has an index, don't create a duplicative one
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create table idxpart (a int, b int) partition by range (a, b);
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create table idxpart1 partition of idxpart for values from (0, 0) to (10, 10);
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create index on idxpart1 (a, b);
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create index on idxpart (a, b);
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\d idxpart1
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Table "public.idxpart1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | integer | | |
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Partition of: idxpart FOR VALUES FROM (0, 0) TO (10, 10)
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Indexes:
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"idxpart1_a_b_idx" btree (a, b)
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select relname, relkind, relhassubclass, inhparent::regclass
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from pg_class left join pg_index ix on (indexrelid = oid)
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left join pg_inherits on (ix.indexrelid = inhrelid)
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where relname like 'idxpart%' order by relname;
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relname | relkind | relhassubclass | inhparent
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------------------+---------+----------------+-----------------
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idxpart | p | t |
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idxpart1 | r | f |
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idxpart1_a_b_idx | i | f | idxpart_a_b_idx
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idxpart_a_b_idx | I | t |
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(4 rows)
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drop table idxpart;
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-- DROP behavior for partitioned indexes
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create table idxpart (a int) partition by range (a);
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create index on idxpart (a);
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create table idxpart1 partition of idxpart for values from (0) to (10);
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drop index idxpart1_a_idx; -- no way
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ERROR: cannot drop index idxpart1_a_idx because index idxpart_a_idx requires it
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HINT: You can drop index idxpart_a_idx instead.
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drop index concurrently idxpart_a_idx; -- unsupported
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ERROR: cannot drop partitioned index "idxpart_a_idx" concurrently
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drop index idxpart_a_idx; -- both indexes go away
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select relname, relkind from pg_class
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where relname like 'idxpart%' order by relname;
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relname | relkind
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----------+---------
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idxpart | p
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idxpart1 | r
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(2 rows)
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create index on idxpart (a);
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drop table idxpart1; -- the index on partition goes away too
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select relname, relkind from pg_class
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where relname like 'idxpart%' order by relname;
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relname | relkind
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---------------+---------
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idxpart | p
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idxpart_a_idx | I
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(2 rows)
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drop table idxpart;
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-- DROP behavior with temporary partitioned indexes
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create temp table idxpart_temp (a int) partition by range (a);
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create index on idxpart_temp(a);
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create temp table idxpart1_temp partition of idxpart_temp
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for values from (0) to (10);
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drop index idxpart1_temp_a_idx; -- error
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ERROR: cannot drop index idxpart1_temp_a_idx because index idxpart_temp_a_idx requires it
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HINT: You can drop index idxpart_temp_a_idx instead.
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-- non-concurrent drop is enforced here, so it is a valid case.
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drop index concurrently idxpart_temp_a_idx;
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select relname, relkind from pg_class
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where relname like 'idxpart_temp%' order by relname;
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relname | relkind
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--------------+---------
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idxpart_temp | p
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(1 row)
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drop table idxpart_temp;
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-- ALTER INDEX .. ATTACH, error cases
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create table idxpart (a int, b int) partition by range (a, b);
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create table idxpart1 partition of idxpart for values from (0, 0) to (10, 10);
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create index idxpart_a_b_idx on only idxpart (a, b);
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create index idxpart1_a_b_idx on idxpart1 (a, b);
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create index idxpart1_tst1 on idxpart1 (b, a);
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create index idxpart1_tst2 on idxpart1 using hash (a);
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create index idxpart1_tst3 on idxpart1 (a, b) where a > 10;
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alter index idxpart attach partition idxpart1;
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ERROR: "idxpart" is not an index
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alter index idxpart_a_b_idx attach partition idxpart1;
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ERROR: "idxpart1" is not an index
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alter index idxpart_a_b_idx attach partition idxpart_a_b_idx;
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ERROR: cannot attach index "idxpart_a_b_idx" as a partition of index "idxpart_a_b_idx"
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DETAIL: Index "idxpart_a_b_idx" is not an index on any partition of table "idxpart".
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alter index idxpart_a_b_idx attach partition idxpart1_b_idx;
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ERROR: relation "idxpart1_b_idx" does not exist
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alter index idxpart_a_b_idx attach partition idxpart1_tst1;
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ERROR: cannot attach index "idxpart1_tst1" as a partition of index "idxpart_a_b_idx"
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DETAIL: The index definitions do not match.
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alter index idxpart_a_b_idx attach partition idxpart1_tst2;
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ERROR: cannot attach index "idxpart1_tst2" as a partition of index "idxpart_a_b_idx"
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DETAIL: The index definitions do not match.
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alter index idxpart_a_b_idx attach partition idxpart1_tst3;
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ERROR: cannot attach index "idxpart1_tst3" as a partition of index "idxpart_a_b_idx"
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DETAIL: The index definitions do not match.
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-- OK
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alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx;
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alter index idxpart_a_b_idx attach partition idxpart1_a_b_idx; -- quiet
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-- reject dupe
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create index idxpart1_2_a_b on idxpart1 (a, b);
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alter index idxpart_a_b_idx attach partition idxpart1_2_a_b;
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ERROR: cannot attach index "idxpart1_2_a_b" as a partition of index "idxpart_a_b_idx"
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DETAIL: Another index is already attached for partition "idxpart1".
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drop table idxpart;
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-- make sure everything's gone
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select indexrelid::regclass, indrelid::regclass
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from pg_index where indexrelid::regclass::text like 'idxpart%';
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indexrelid | indrelid
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------------+----------
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(0 rows)
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-- Don't auto-attach incompatible indexes
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create table idxpart (a int, b int) partition by range (a);
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create table idxpart1 (a int, b int);
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create index on idxpart1 using hash (a);
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create index on idxpart1 (a) where b > 1;
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create index on idxpart1 ((a + 0));
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create index on idxpart1 (a, a);
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create index on idxpart (a);
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alter table idxpart attach partition idxpart1 for values from (0) to (1000);
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\d idxpart1
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Table "public.idxpart1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | integer | | |
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Partition of: idxpart FOR VALUES FROM (0) TO (1000)
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Indexes:
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"idxpart1_a_a1_idx" btree (a, a)
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"idxpart1_a_idx" hash (a)
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"idxpart1_a_idx1" btree (a) WHERE b > 1
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"idxpart1_a_idx2" btree (a)
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"idxpart1_expr_idx" btree ((a + 0))
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drop table idxpart;
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-- If CREATE INDEX ONLY, don't create indexes on partitions; and existing
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-- indexes on partitions don't change parent. ALTER INDEX ATTACH can change
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-- the parent after the fact.
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create table idxpart (a int) partition by range (a);
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create table idxpart1 partition of idxpart for values from (0) to (100);
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create table idxpart2 partition of idxpart for values from (100) to (1000)
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partition by range (a);
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create table idxpart21 partition of idxpart2 for values from (100) to (200);
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create table idxpart22 partition of idxpart2 for values from (200) to (300);
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create index on idxpart22 (a);
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create index on only idxpart2 (a);
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create index on idxpart (a);
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-- Here we expect that idxpart1 and idxpart2 have a new index, but idxpart21
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-- does not; also, idxpart22 is not attached.
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\d idxpart1
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Table "public.idxpart1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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Partition of: idxpart FOR VALUES FROM (0) TO (100)
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Indexes:
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"idxpart1_a_idx" btree (a)
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\d idxpart2
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Partitioned table "public.idxpart2"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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Partition of: idxpart FOR VALUES FROM (100) TO (1000)
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Partition key: RANGE (a)
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Indexes:
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"idxpart2_a_idx" btree (a) INVALID
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Number of partitions: 2 (Use \d+ to list them.)
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\d idxpart21
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Table "public.idxpart21"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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Partition of: idxpart2 FOR VALUES FROM (100) TO (200)
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select indexrelid::regclass, indrelid::regclass, inhparent::regclass
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from pg_index idx left join pg_inherits inh on (idx.indexrelid = inh.inhrelid)
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where indexrelid::regclass::text like 'idxpart%'
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order by indexrelid::regclass::text collate "C";
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indexrelid | indrelid | inhparent
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-----------------+-----------+---------------
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idxpart1_a_idx | idxpart1 | idxpart_a_idx
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idxpart22_a_idx | idxpart22 |
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idxpart2_a_idx | idxpart2 | idxpart_a_idx
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idxpart_a_idx | idxpart |
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(4 rows)
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alter index idxpart2_a_idx attach partition idxpart22_a_idx;
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select indexrelid::regclass, indrelid::regclass, inhparent::regclass
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from pg_index idx left join pg_inherits inh on (idx.indexrelid = inh.inhrelid)
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where indexrelid::regclass::text like 'idxpart%'
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order by indexrelid::regclass::text collate "C";
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indexrelid | indrelid | inhparent
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-----------------+-----------+----------------
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idxpart1_a_idx | idxpart1 | idxpart_a_idx
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idxpart22_a_idx | idxpart22 | idxpart2_a_idx
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idxpart2_a_idx | idxpart2 | idxpart_a_idx
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idxpart_a_idx | idxpart |
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(4 rows)
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-- attaching idxpart22 is not enough to set idxpart22_a_idx valid ...
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alter index idxpart2_a_idx attach partition idxpart22_a_idx;
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\d idxpart2
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Partitioned table "public.idxpart2"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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Partition of: idxpart FOR VALUES FROM (100) TO (1000)
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Partition key: RANGE (a)
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Indexes:
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"idxpart2_a_idx" btree (a) INVALID
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Number of partitions: 2 (Use \d+ to list them.)
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-- ... but this one is.
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create index on idxpart21 (a);
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alter index idxpart2_a_idx attach partition idxpart21_a_idx;
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\d idxpart2
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Partitioned table "public.idxpart2"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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Partition of: idxpart FOR VALUES FROM (100) TO (1000)
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Partition key: RANGE (a)
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Indexes:
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"idxpart2_a_idx" btree (a)
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Number of partitions: 2 (Use \d+ to list them.)
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drop table idxpart;
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-- When a table is attached a partition and it already has an index, a
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-- duplicate index should not get created, but rather the index becomes
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-- attached to the parent's index.
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create table idxpart (a int, b int, c text, d bool) partition by range (a);
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create index idxparti on idxpart (a);
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create index idxparti2 on idxpart (b, c);
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create table idxpart1 (like idxpart including indexes);
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\d idxpart1
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Table "public.idxpart1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | integer | | |
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c | text | | |
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d | boolean | | |
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Indexes:
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"idxpart1_a_idx" btree (a)
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"idxpart1_b_c_idx" btree (b, c)
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select relname, relkind, inhparent::regclass
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from pg_class left join pg_index ix on (indexrelid = oid)
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left join pg_inherits on (ix.indexrelid = inhrelid)
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where relname like 'idxpart%' order by relname;
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relname | relkind | inhparent
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------------------+---------+-----------
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idxpart | p |
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idxpart1 | r |
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idxpart1_a_idx | i |
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idxpart1_b_c_idx | i |
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idxparti | I |
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idxparti2 | I |
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(6 rows)
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alter table idxpart attach partition idxpart1 for values from (0) to (10);
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\d idxpart1
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Table "public.idxpart1"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+---------
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a | integer | | |
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b | integer | | |
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c | text | | |
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d | boolean | | |
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Partition of: idxpart FOR VALUES FROM (0) TO (10)
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Indexes:
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"idxpart1_a_idx" btree (a)
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"idxpart1_b_c_idx" btree (b, c)
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|
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select relname, relkind, inhparent::regclass
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from pg_class left join pg_index ix on (indexrelid = oid)
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left join pg_inherits on (ix.indexrelid = inhrelid)
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where relname like 'idxpart%' order by relname;
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relname | relkind | inhparent
|
|
------------------+---------+-----------
|
|
idxpart | p |
|
|
idxpart1 | r |
|
|
idxpart1_a_idx | i | idxparti
|
|
idxpart1_b_c_idx | i | idxparti2
|
|
idxparti | I |
|
|
idxparti2 | I |
|
|
(6 rows)
|
|
|
|
-- While here, also check matching when creating an index after the fact.
|
|
create index on idxpart1 ((a+b)) where d = true;
|
|
\d idxpart1
|
|
Table "public.idxpart1"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
c | text | | |
|
|
d | boolean | | |
|
|
Partition of: idxpart FOR VALUES FROM (0) TO (10)
|
|
Indexes:
|
|
"idxpart1_a_idx" btree (a)
|
|
"idxpart1_b_c_idx" btree (b, c)
|
|
"idxpart1_expr_idx" btree ((a + b)) WHERE d = true
|
|
|
|
select relname, relkind, inhparent::regclass
|
|
from pg_class left join pg_index ix on (indexrelid = oid)
|
|
left join pg_inherits on (ix.indexrelid = inhrelid)
|
|
where relname like 'idxpart%' order by relname;
|
|
relname | relkind | inhparent
|
|
-------------------+---------+-----------
|
|
idxpart | p |
|
|
idxpart1 | r |
|
|
idxpart1_a_idx | i | idxparti
|
|
idxpart1_b_c_idx | i | idxparti2
|
|
idxpart1_expr_idx | i |
|
|
idxparti | I |
|
|
idxparti2 | I |
|
|
(7 rows)
|
|
|
|
create index idxparti3 on idxpart ((a+b)) where d = true;
|
|
\d idxpart1
|
|
Table "public.idxpart1"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
c | text | | |
|
|
d | boolean | | |
|
|
Partition of: idxpart FOR VALUES FROM (0) TO (10)
|
|
Indexes:
|
|
"idxpart1_a_idx" btree (a)
|
|
"idxpart1_b_c_idx" btree (b, c)
|
|
"idxpart1_expr_idx" btree ((a + b)) WHERE d = true
|
|
|
|
select relname, relkind, inhparent::regclass
|
|
from pg_class left join pg_index ix on (indexrelid = oid)
|
|
left join pg_inherits on (ix.indexrelid = inhrelid)
|
|
where relname like 'idxpart%' order by relname;
|
|
relname | relkind | inhparent
|
|
-------------------+---------+-----------
|
|
idxpart | p |
|
|
idxpart1 | r |
|
|
idxpart1_a_idx | i | idxparti
|
|
idxpart1_b_c_idx | i | idxparti2
|
|
idxpart1_expr_idx | i | idxparti3
|
|
idxparti | I |
|
|
idxparti2 | I |
|
|
idxparti3 | I |
|
|
(8 rows)
|
|
|
|
drop table idxpart;
|
|
-- Verify that attaching an invalid index does not mark the parent index valid.
|
|
-- On the other hand, attaching a valid index marks not only its direct
|
|
-- ancestor valid, but also any indirect ancestor that was only missing the one
|
|
-- that was just made valid
|
|
create table idxpart (a int, b int) partition by range (a);
|
|
create table idxpart1 partition of idxpart for values from (1) to (1000) partition by range (a);
|
|
create table idxpart11 partition of idxpart1 for values from (1) to (100);
|
|
create index on only idxpart1 (a);
|
|
create index on only idxpart (a);
|
|
-- this results in two invalid indexes:
|
|
select relname, indisvalid from pg_class join pg_index on indexrelid = oid
|
|
where relname like 'idxpart%' order by relname;
|
|
relname | indisvalid
|
|
----------------+------------
|
|
idxpart1_a_idx | f
|
|
idxpart_a_idx | f
|
|
(2 rows)
|
|
|
|
-- idxpart1_a_idx is not valid, so idxpart_a_idx should not become valid:
|
|
alter index idxpart_a_idx attach partition idxpart1_a_idx;
|
|
select relname, indisvalid from pg_class join pg_index on indexrelid = oid
|
|
where relname like 'idxpart%' order by relname;
|
|
relname | indisvalid
|
|
----------------+------------
|
|
idxpart1_a_idx | f
|
|
idxpart_a_idx | f
|
|
(2 rows)
|
|
|
|
-- after creating and attaching this, both idxpart1_a_idx and idxpart_a_idx
|
|
-- should become valid
|
|
create index on idxpart11 (a);
|
|
alter index idxpart1_a_idx attach partition idxpart11_a_idx;
|
|
select relname, indisvalid from pg_class join pg_index on indexrelid = oid
|
|
where relname like 'idxpart%' order by relname;
|
|
relname | indisvalid
|
|
-----------------+------------
|
|
idxpart11_a_idx | t
|
|
idxpart1_a_idx | t
|
|
idxpart_a_idx | t
|
|
(3 rows)
|
|
|
|
drop table idxpart;
|
|
-- verify dependency handling during ALTER TABLE DETACH PARTITION
|
|
create table idxpart (a int) partition by range (a);
|
|
create table idxpart1 (like idxpart);
|
|
create index on idxpart1 (a);
|
|
create index on idxpart (a);
|
|
create table idxpart2 (like idxpart);
|
|
alter table idxpart attach partition idxpart1 for values from (0000) to (1000);
|
|
alter table idxpart attach partition idxpart2 for values from (1000) to (2000);
|
|
create table idxpart3 partition of idxpart for values from (2000) to (3000);
|
|
select relname, relkind from pg_class where relname like 'idxpart%' order by relname;
|
|
relname | relkind
|
|
----------------+---------
|
|
idxpart | p
|
|
idxpart1 | r
|
|
idxpart1_a_idx | i
|
|
idxpart2 | r
|
|
idxpart2_a_idx | i
|
|
idxpart3 | r
|
|
idxpart3_a_idx | i
|
|
idxpart_a_idx | I
|
|
(8 rows)
|
|
|
|
-- a) after detaching partitions, the indexes can be dropped independently
|
|
alter table idxpart detach partition idxpart1;
|
|
alter table idxpart detach partition idxpart2;
|
|
alter table idxpart detach partition idxpart3;
|
|
drop index idxpart1_a_idx;
|
|
drop index idxpart2_a_idx;
|
|
drop index idxpart3_a_idx;
|
|
select relname, relkind from pg_class where relname like 'idxpart%' order by relname;
|
|
relname | relkind
|
|
---------------+---------
|
|
idxpart | p
|
|
idxpart1 | r
|
|
idxpart2 | r
|
|
idxpart3 | r
|
|
idxpart_a_idx | I
|
|
(5 rows)
|
|
|
|
drop table idxpart, idxpart1, idxpart2, idxpart3;
|
|
select relname, relkind from pg_class where relname like 'idxpart%' order by relname;
|
|
relname | relkind
|
|
---------+---------
|
|
(0 rows)
|
|
|
|
create table idxpart (a int) partition by range (a);
|
|
create table idxpart1 (like idxpart);
|
|
create index on idxpart1 (a);
|
|
create index on idxpart (a);
|
|
create table idxpart2 (like idxpart);
|
|
alter table idxpart attach partition idxpart1 for values from (0000) to (1000);
|
|
alter table idxpart attach partition idxpart2 for values from (1000) to (2000);
|
|
create table idxpart3 partition of idxpart for values from (2000) to (3000);
|
|
-- b) after detaching, dropping the index on parent does not remove the others
|
|
select relname, relkind from pg_class where relname like 'idxpart%' order by relname;
|
|
relname | relkind
|
|
----------------+---------
|
|
idxpart | p
|
|
idxpart1 | r
|
|
idxpart1_a_idx | i
|
|
idxpart2 | r
|
|
idxpart2_a_idx | i
|
|
idxpart3 | r
|
|
idxpart3_a_idx | i
|
|
idxpart_a_idx | I
|
|
(8 rows)
|
|
|
|
alter table idxpart detach partition idxpart1;
|
|
alter table idxpart detach partition idxpart2;
|
|
alter table idxpart detach partition idxpart3;
|
|
drop index idxpart_a_idx;
|
|
select relname, relkind from pg_class where relname like 'idxpart%' order by relname;
|
|
relname | relkind
|
|
----------------+---------
|
|
idxpart | p
|
|
idxpart1 | r
|
|
idxpart1_a_idx | i
|
|
idxpart2 | r
|
|
idxpart2_a_idx | i
|
|
idxpart3 | r
|
|
idxpart3_a_idx | i
|
|
(7 rows)
|
|
|
|
drop table idxpart, idxpart1, idxpart2, idxpart3;
|
|
select relname, relkind from pg_class where relname like 'idxpart%' order by relname;
|
|
relname | relkind
|
|
---------+---------
|
|
(0 rows)
|
|
|
|
create table idxpart (a int, b int, c int) partition by range(a);
|
|
create index on idxpart(c);
|
|
create table idxpart1 partition of idxpart for values from (0) to (250);
|
|
create table idxpart2 partition of idxpart for values from (250) to (500);
|
|
alter table idxpart detach partition idxpart2;
|
|
\d idxpart2
|
|
Table "public.idxpart2"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
c | integer | | |
|
|
Indexes:
|
|
"idxpart2_c_idx" btree (c)
|
|
|
|
alter table idxpart2 drop column c;
|
|
\d idxpart2
|
|
Table "public.idxpart2"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
|
|
drop table idxpart, idxpart2;
|
|
-- Verify that expression indexes inherit correctly
|
|
create table idxpart (a int, b int) partition by range (a);
|
|
create table idxpart1 (like idxpart);
|
|
create index on idxpart1 ((a + b));
|
|
create index on idxpart ((a + b));
|
|
create table idxpart2 (like idxpart);
|
|
alter table idxpart attach partition idxpart1 for values from (0000) to (1000);
|
|
alter table idxpart attach partition idxpart2 for values from (1000) to (2000);
|
|
create table idxpart3 partition of idxpart for values from (2000) to (3000);
|
|
select relname as child, inhparent::regclass as parent, pg_get_indexdef as childdef
|
|
from pg_class join pg_inherits on inhrelid = oid,
|
|
lateral pg_get_indexdef(pg_class.oid)
|
|
where relkind in ('i', 'I') and relname like 'idxpart%' order by relname;
|
|
child | parent | childdef
|
|
-------------------+------------------+---------------------------------------------------------------------------
|
|
idxpart1_expr_idx | idxpart_expr_idx | CREATE INDEX idxpart1_expr_idx ON public.idxpart1 USING btree (((a + b)))
|
|
idxpart2_expr_idx | idxpart_expr_idx | CREATE INDEX idxpart2_expr_idx ON public.idxpart2 USING btree (((a + b)))
|
|
idxpart3_expr_idx | idxpart_expr_idx | CREATE INDEX idxpart3_expr_idx ON public.idxpart3 USING btree (((a + b)))
|
|
(3 rows)
|
|
|
|
drop table idxpart;
|
|
-- Verify behavior for collation (mis)matches
|
|
create table idxpart (a text) partition by range (a);
|
|
create table idxpart1 (like idxpart);
|
|
create table idxpart2 (like idxpart);
|
|
create index on idxpart2 (a collate "POSIX");
|
|
create index on idxpart2 (a);
|
|
create index on idxpart2 (a collate "C");
|
|
alter table idxpart attach partition idxpart1 for values from ('aaa') to ('bbb');
|
|
alter table idxpart attach partition idxpart2 for values from ('bbb') to ('ccc');
|
|
create table idxpart3 partition of idxpart for values from ('ccc') to ('ddd');
|
|
create index on idxpart (a collate "C");
|
|
create table idxpart4 partition of idxpart for values from ('ddd') to ('eee');
|
|
select relname as child, inhparent::regclass as parent, pg_get_indexdef as childdef
|
|
from pg_class left join pg_inherits on inhrelid = oid,
|
|
lateral pg_get_indexdef(pg_class.oid)
|
|
where relkind in ('i', 'I') and relname like 'idxpart%' order by relname;
|
|
child | parent | childdef
|
|
-----------------+---------------+--------------------------------------------------------------------------------
|
|
idxpart1_a_idx | idxpart_a_idx | CREATE INDEX idxpart1_a_idx ON public.idxpart1 USING btree (a COLLATE "C")
|
|
idxpart2_a_idx | | CREATE INDEX idxpart2_a_idx ON public.idxpart2 USING btree (a COLLATE "POSIX")
|
|
idxpart2_a_idx1 | | CREATE INDEX idxpart2_a_idx1 ON public.idxpart2 USING btree (a)
|
|
idxpart2_a_idx2 | idxpart_a_idx | CREATE INDEX idxpart2_a_idx2 ON public.idxpart2 USING btree (a COLLATE "C")
|
|
idxpart3_a_idx | idxpart_a_idx | CREATE INDEX idxpart3_a_idx ON public.idxpart3 USING btree (a COLLATE "C")
|
|
idxpart4_a_idx | idxpart_a_idx | CREATE INDEX idxpart4_a_idx ON public.idxpart4 USING btree (a COLLATE "C")
|
|
idxpart_a_idx | | CREATE INDEX idxpart_a_idx ON ONLY public.idxpart USING btree (a COLLATE "C")
|
|
(7 rows)
|
|
|
|
drop table idxpart;
|
|
-- Verify behavior for opclass (mis)matches
|
|
create table idxpart (a text) partition by range (a);
|
|
create table idxpart1 (like idxpart);
|
|
create table idxpart2 (like idxpart);
|
|
create index on idxpart2 (a);
|
|
alter table idxpart attach partition idxpart1 for values from ('aaa') to ('bbb');
|
|
alter table idxpart attach partition idxpart2 for values from ('bbb') to ('ccc');
|
|
create table idxpart3 partition of idxpart for values from ('ccc') to ('ddd');
|
|
create index on idxpart (a text_pattern_ops);
|
|
create table idxpart4 partition of idxpart for values from ('ddd') to ('eee');
|
|
-- must *not* have attached the index we created on idxpart2
|
|
select relname as child, inhparent::regclass as parent, pg_get_indexdef as childdef
|
|
from pg_class left join pg_inherits on inhrelid = oid,
|
|
lateral pg_get_indexdef(pg_class.oid)
|
|
where relkind in ('i', 'I') and relname like 'idxpart%' order by relname;
|
|
child | parent | childdef
|
|
-----------------+---------------+------------------------------------------------------------------------------------
|
|
idxpart1_a_idx | idxpart_a_idx | CREATE INDEX idxpart1_a_idx ON public.idxpart1 USING btree (a text_pattern_ops)
|
|
idxpart2_a_idx | | CREATE INDEX idxpart2_a_idx ON public.idxpart2 USING btree (a)
|
|
idxpart2_a_idx1 | idxpart_a_idx | CREATE INDEX idxpart2_a_idx1 ON public.idxpart2 USING btree (a text_pattern_ops)
|
|
idxpart3_a_idx | idxpart_a_idx | CREATE INDEX idxpart3_a_idx ON public.idxpart3 USING btree (a text_pattern_ops)
|
|
idxpart4_a_idx | idxpart_a_idx | CREATE INDEX idxpart4_a_idx ON public.idxpart4 USING btree (a text_pattern_ops)
|
|
idxpart_a_idx | | CREATE INDEX idxpart_a_idx ON ONLY public.idxpart USING btree (a text_pattern_ops)
|
|
(6 rows)
|
|
|
|
drop index idxpart_a_idx;
|
|
create index on only idxpart (a text_pattern_ops);
|
|
-- must reject
|
|
alter index idxpart_a_idx attach partition idxpart2_a_idx;
|
|
ERROR: cannot attach index "idxpart2_a_idx" as a partition of index "idxpart_a_idx"
|
|
DETAIL: The index definitions do not match.
|
|
drop table idxpart;
|
|
-- Verify that attaching indexes maps attribute numbers correctly
|
|
create table idxpart (col1 int, a int, col2 int, b int) partition by range (a);
|
|
create table idxpart1 (b int, col1 int, col2 int, col3 int, a int);
|
|
alter table idxpart drop column col1, drop column col2;
|
|
alter table idxpart1 drop column col1, drop column col2, drop column col3;
|
|
alter table idxpart attach partition idxpart1 for values from (0) to (1000);
|
|
create index idxpart_1_idx on only idxpart (b, a);
|
|
create index idxpart1_1_idx on idxpart1 (b, a);
|
|
create index idxpart1_1b_idx on idxpart1 (b);
|
|
-- test expressions and partial-index predicate, too
|
|
create index idxpart_2_idx on only idxpart ((b + a)) where a > 1;
|
|
create index idxpart1_2_idx on idxpart1 ((b + a)) where a > 1;
|
|
create index idxpart1_2b_idx on idxpart1 ((a + b)) where a > 1;
|
|
create index idxpart1_2c_idx on idxpart1 ((b + a)) where b > 1;
|
|
alter index idxpart_1_idx attach partition idxpart1_1b_idx; -- fail
|
|
ERROR: cannot attach index "idxpart1_1b_idx" as a partition of index "idxpart_1_idx"
|
|
DETAIL: The index definitions do not match.
|
|
alter index idxpart_1_idx attach partition idxpart1_1_idx;
|
|
alter index idxpart_2_idx attach partition idxpart1_2b_idx; -- fail
|
|
ERROR: cannot attach index "idxpart1_2b_idx" as a partition of index "idxpart_2_idx"
|
|
DETAIL: The index definitions do not match.
|
|
alter index idxpart_2_idx attach partition idxpart1_2c_idx; -- fail
|
|
ERROR: cannot attach index "idxpart1_2c_idx" as a partition of index "idxpart_2_idx"
|
|
DETAIL: The index definitions do not match.
|
|
alter index idxpart_2_idx attach partition idxpart1_2_idx; -- ok
|
|
select relname as child, inhparent::regclass as parent, pg_get_indexdef as childdef
|
|
from pg_class left join pg_inherits on inhrelid = oid,
|
|
lateral pg_get_indexdef(pg_class.oid)
|
|
where relkind in ('i', 'I') and relname like 'idxpart%' order by relname;
|
|
child | parent | childdef
|
|
-----------------+---------------+-----------------------------------------------------------------------------------------
|
|
idxpart1_1_idx | idxpart_1_idx | CREATE INDEX idxpart1_1_idx ON public.idxpart1 USING btree (b, a)
|
|
idxpart1_1b_idx | | CREATE INDEX idxpart1_1b_idx ON public.idxpart1 USING btree (b)
|
|
idxpart1_2_idx | idxpart_2_idx | CREATE INDEX idxpart1_2_idx ON public.idxpart1 USING btree (((b + a))) WHERE (a > 1)
|
|
idxpart1_2b_idx | | CREATE INDEX idxpart1_2b_idx ON public.idxpart1 USING btree (((a + b))) WHERE (a > 1)
|
|
idxpart1_2c_idx | | CREATE INDEX idxpart1_2c_idx ON public.idxpart1 USING btree (((b + a))) WHERE (b > 1)
|
|
idxpart_1_idx | | CREATE INDEX idxpart_1_idx ON ONLY public.idxpart USING btree (b, a)
|
|
idxpart_2_idx | | CREATE INDEX idxpart_2_idx ON ONLY public.idxpart USING btree (((b + a))) WHERE (a > 1)
|
|
(7 rows)
|
|
|
|
drop table idxpart;
|
|
-- Make sure the partition columns are mapped correctly
|
|
create table idxpart (a int, b int, c text) partition by range (a);
|
|
create index idxparti on idxpart (a);
|
|
create index idxparti2 on idxpart (c, b);
|
|
create table idxpart1 (c text, a int, b int);
|
|
alter table idxpart attach partition idxpart1 for values from (0) to (10);
|
|
create table idxpart2 (c text, a int, b int);
|
|
create index on idxpart2 (a);
|
|
create index on idxpart2 (c, b);
|
|
alter table idxpart attach partition idxpart2 for values from (10) to (20);
|
|
select c.relname, pg_get_indexdef(indexrelid)
|
|
from pg_class c join pg_index i on c.oid = i.indexrelid
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
relname | pg_get_indexdef
|
|
------------------+---------------------------------------------------------------------
|
|
idxpart1_a_idx | CREATE INDEX idxpart1_a_idx ON public.idxpart1 USING btree (a)
|
|
idxpart1_c_b_idx | CREATE INDEX idxpart1_c_b_idx ON public.idxpart1 USING btree (c, b)
|
|
idxpart2_a_idx | CREATE INDEX idxpart2_a_idx ON public.idxpart2 USING btree (a)
|
|
idxpart2_c_b_idx | CREATE INDEX idxpart2_c_b_idx ON public.idxpart2 USING btree (c, b)
|
|
idxparti | CREATE INDEX idxparti ON ONLY public.idxpart USING btree (a)
|
|
idxparti2 | CREATE INDEX idxparti2 ON ONLY public.idxpart USING btree (c, b)
|
|
(6 rows)
|
|
|
|
drop table idxpart;
|
|
-- Verify that columns are mapped correctly in expression indexes
|
|
create table idxpart (col1 int, col2 int, a int, b int) partition by range (a);
|
|
create table idxpart1 (col2 int, b int, col1 int, a int);
|
|
create table idxpart2 (col1 int, col2 int, b int, a int);
|
|
alter table idxpart drop column col1, drop column col2;
|
|
alter table idxpart1 drop column col1, drop column col2;
|
|
alter table idxpart2 drop column col1, drop column col2;
|
|
create index on idxpart2 (abs(b));
|
|
alter table idxpart attach partition idxpart2 for values from (0) to (1);
|
|
create index on idxpart (abs(b));
|
|
create index on idxpart ((b + 1));
|
|
alter table idxpart attach partition idxpart1 for values from (1) to (2);
|
|
select c.relname, pg_get_indexdef(indexrelid)
|
|
from pg_class c join pg_index i on c.oid = i.indexrelid
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
relname | pg_get_indexdef
|
|
-------------------+------------------------------------------------------------------------------
|
|
idxpart1_abs_idx | CREATE INDEX idxpart1_abs_idx ON public.idxpart1 USING btree (abs(b))
|
|
idxpart1_expr_idx | CREATE INDEX idxpart1_expr_idx ON public.idxpart1 USING btree (((b + 1)))
|
|
idxpart2_abs_idx | CREATE INDEX idxpart2_abs_idx ON public.idxpart2 USING btree (abs(b))
|
|
idxpart2_expr_idx | CREATE INDEX idxpart2_expr_idx ON public.idxpart2 USING btree (((b + 1)))
|
|
idxpart_abs_idx | CREATE INDEX idxpart_abs_idx ON ONLY public.idxpart USING btree (abs(b))
|
|
idxpart_expr_idx | CREATE INDEX idxpart_expr_idx ON ONLY public.idxpart USING btree (((b + 1)))
|
|
(6 rows)
|
|
|
|
drop table idxpart;
|
|
-- Verify that columns are mapped correctly for WHERE in a partial index
|
|
create table idxpart (col1 int, a int, col3 int, b int) partition by range (a);
|
|
alter table idxpart drop column col1, drop column col3;
|
|
create table idxpart1 (col1 int, col2 int, col3 int, col4 int, b int, a int);
|
|
alter table idxpart1 drop column col1, drop column col2, drop column col3, drop column col4;
|
|
alter table idxpart attach partition idxpart1 for values from (0) to (1000);
|
|
create table idxpart2 (col1 int, col2 int, b int, a int);
|
|
create index on idxpart2 (a) where b > 1000;
|
|
alter table idxpart2 drop column col1, drop column col2;
|
|
alter table idxpart attach partition idxpart2 for values from (1000) to (2000);
|
|
create index on idxpart (a) where b > 1000;
|
|
select c.relname, pg_get_indexdef(indexrelid)
|
|
from pg_class c join pg_index i on c.oid = i.indexrelid
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
relname | pg_get_indexdef
|
|
----------------+------------------------------------------------------------------------------------
|
|
idxpart1_a_idx | CREATE INDEX idxpart1_a_idx ON public.idxpart1 USING btree (a) WHERE (b > 1000)
|
|
idxpart2_a_idx | CREATE INDEX idxpart2_a_idx ON public.idxpart2 USING btree (a) WHERE (b > 1000)
|
|
idxpart_a_idx | CREATE INDEX idxpart_a_idx ON ONLY public.idxpart USING btree (a) WHERE (b > 1000)
|
|
(3 rows)
|
|
|
|
drop table idxpart;
|
|
-- Column number mapping: dropped columns in the partition
|
|
create table idxpart1 (drop_1 int, drop_2 int, col_keep int, drop_3 int);
|
|
alter table idxpart1 drop column drop_1;
|
|
alter table idxpart1 drop column drop_2;
|
|
alter table idxpart1 drop column drop_3;
|
|
create index on idxpart1 (col_keep);
|
|
create table idxpart (col_keep int) partition by range (col_keep);
|
|
create index on idxpart (col_keep);
|
|
alter table idxpart attach partition idxpart1 for values from (0) to (1000);
|
|
\d idxpart
|
|
Partitioned table "public.idxpart"
|
|
Column | Type | Collation | Nullable | Default
|
|
----------+---------+-----------+----------+---------
|
|
col_keep | integer | | |
|
|
Partition key: RANGE (col_keep)
|
|
Indexes:
|
|
"idxpart_col_keep_idx" btree (col_keep)
|
|
Number of partitions: 1 (Use \d+ to list them.)
|
|
|
|
\d idxpart1
|
|
Table "public.idxpart1"
|
|
Column | Type | Collation | Nullable | Default
|
|
----------+---------+-----------+----------+---------
|
|
col_keep | integer | | |
|
|
Partition of: idxpart FOR VALUES FROM (0) TO (1000)
|
|
Indexes:
|
|
"idxpart1_col_keep_idx" btree (col_keep)
|
|
|
|
select attrelid::regclass, attname, attnum from pg_attribute
|
|
where attrelid::regclass::text like 'idxpart%' and attnum > 0
|
|
order by attrelid::regclass, attnum;
|
|
attrelid | attname | attnum
|
|
-----------------------+------------------------------+--------
|
|
idxpart1 | ........pg.dropped.1........ | 1
|
|
idxpart1 | ........pg.dropped.2........ | 2
|
|
idxpart1 | col_keep | 3
|
|
idxpart1 | ........pg.dropped.4........ | 4
|
|
idxpart1_col_keep_idx | col_keep | 1
|
|
idxpart | col_keep | 1
|
|
idxpart_col_keep_idx | col_keep | 1
|
|
(7 rows)
|
|
|
|
drop table idxpart;
|
|
-- Column number mapping: dropped columns in the parent table
|
|
create table idxpart(drop_1 int, drop_2 int, col_keep int, drop_3 int) partition by range (col_keep);
|
|
alter table idxpart drop column drop_1;
|
|
alter table idxpart drop column drop_2;
|
|
alter table idxpart drop column drop_3;
|
|
create table idxpart1 (col_keep int);
|
|
create index on idxpart1 (col_keep);
|
|
create index on idxpart (col_keep);
|
|
alter table idxpart attach partition idxpart1 for values from (0) to (1000);
|
|
\d idxpart
|
|
Partitioned table "public.idxpart"
|
|
Column | Type | Collation | Nullable | Default
|
|
----------+---------+-----------+----------+---------
|
|
col_keep | integer | | |
|
|
Partition key: RANGE (col_keep)
|
|
Indexes:
|
|
"idxpart_col_keep_idx" btree (col_keep)
|
|
Number of partitions: 1 (Use \d+ to list them.)
|
|
|
|
\d idxpart1
|
|
Table "public.idxpart1"
|
|
Column | Type | Collation | Nullable | Default
|
|
----------+---------+-----------+----------+---------
|
|
col_keep | integer | | |
|
|
Partition of: idxpart FOR VALUES FROM (0) TO (1000)
|
|
Indexes:
|
|
"idxpart1_col_keep_idx" btree (col_keep)
|
|
|
|
select attrelid::regclass, attname, attnum from pg_attribute
|
|
where attrelid::regclass::text like 'idxpart%' and attnum > 0
|
|
order by attrelid::regclass, attnum;
|
|
attrelid | attname | attnum
|
|
-----------------------+------------------------------+--------
|
|
idxpart | ........pg.dropped.1........ | 1
|
|
idxpart | ........pg.dropped.2........ | 2
|
|
idxpart | col_keep | 3
|
|
idxpart | ........pg.dropped.4........ | 4
|
|
idxpart1 | col_keep | 1
|
|
idxpart1_col_keep_idx | col_keep | 1
|
|
idxpart_col_keep_idx | col_keep | 1
|
|
(7 rows)
|
|
|
|
drop table idxpart;
|
|
--
|
|
-- Constraint-related indexes
|
|
--
|
|
-- Verify that it works to add primary key / unique to partitioned tables
|
|
create table idxpart (a int primary key, b int) partition by range (a);
|
|
\d idxpart
|
|
Partitioned table "public.idxpart"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | not null |
|
|
b | integer | | |
|
|
Partition key: RANGE (a)
|
|
Indexes:
|
|
"idxpart_pkey" PRIMARY KEY, btree (a)
|
|
Number of partitions: 0
|
|
|
|
-- multiple primary key on child should fail
|
|
create table failpart partition of idxpart (b primary key) for values from (0) to (100);
|
|
ERROR: multiple primary keys for table "failpart" are not allowed
|
|
drop table idxpart;
|
|
-- primary key on child is okay if there's no PK in the parent, though
|
|
create table idxpart (a int) partition by range (a);
|
|
create table idxpart1pk partition of idxpart (a primary key) for values from (0) to (100);
|
|
\d idxpart1pk
|
|
Table "public.idxpart1pk"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | not null |
|
|
Partition of: idxpart FOR VALUES FROM (0) TO (100)
|
|
Indexes:
|
|
"idxpart1pk_pkey" PRIMARY KEY, btree (a)
|
|
|
|
drop table idxpart;
|
|
-- Failing to use the full partition key is not allowed
|
|
create table idxpart (a int unique, b int) partition by range (a, b);
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: UNIQUE constraint on table "idxpart" lacks column "b" which is part of the partition key.
|
|
create table idxpart (a int, b int unique) partition by range (a, b);
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: UNIQUE constraint on table "idxpart" lacks column "a" which is part of the partition key.
|
|
create table idxpart (a int primary key, b int) partition by range (b, a);
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: PRIMARY KEY constraint on table "idxpart" lacks column "b" which is part of the partition key.
|
|
create table idxpart (a int, b int primary key) partition by range (b, a);
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: PRIMARY KEY constraint on table "idxpart" lacks column "a" which is part of the partition key.
|
|
-- OK if you use them in some other order
|
|
create table idxpart (a int, b int, c text, primary key (a, b, c)) partition by range (b, c, a);
|
|
drop table idxpart;
|
|
-- not other types of index-based constraints
|
|
create table idxpart (a int, exclude (a with = )) partition by range (a);
|
|
ERROR: exclusion constraints are not supported on partitioned tables
|
|
LINE 1: create table idxpart (a int, exclude (a with = )) partition ...
|
|
^
|
|
-- no expressions in partition key for PK/UNIQUE
|
|
create table idxpart (a int primary key, b int) partition by range ((b + a));
|
|
ERROR: unsupported PRIMARY KEY constraint with partition key definition
|
|
DETAIL: PRIMARY KEY constraints cannot be used when partition keys include expressions.
|
|
create table idxpart (a int unique, b int) partition by range ((b + a));
|
|
ERROR: unsupported UNIQUE constraint with partition key definition
|
|
DETAIL: UNIQUE constraints cannot be used when partition keys include expressions.
|
|
-- use ALTER TABLE to add a primary key
|
|
create table idxpart (a int, b int, c text) partition by range (a, b);
|
|
alter table idxpart add primary key (a); -- not an incomplete one though
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: PRIMARY KEY constraint on table "idxpart" lacks column "b" which is part of the partition key.
|
|
alter table idxpart add primary key (a, b); -- this works
|
|
\d idxpart
|
|
Partitioned table "public.idxpart"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | not null |
|
|
b | integer | | not null |
|
|
c | text | | |
|
|
Partition key: RANGE (a, b)
|
|
Indexes:
|
|
"idxpart_pkey" PRIMARY KEY, btree (a, b)
|
|
Number of partitions: 0
|
|
|
|
create table idxpart1 partition of idxpart for values from (0, 0) to (1000, 1000);
|
|
\d idxpart1
|
|
Table "public.idxpart1"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | not null |
|
|
b | integer | | not null |
|
|
c | text | | |
|
|
Partition of: idxpart FOR VALUES FROM (0, 0) TO (1000, 1000)
|
|
Indexes:
|
|
"idxpart1_pkey" PRIMARY KEY, btree (a, b)
|
|
|
|
drop table idxpart;
|
|
-- use ALTER TABLE to add a unique constraint
|
|
create table idxpart (a int, b int) partition by range (a, b);
|
|
alter table idxpart add unique (a); -- not an incomplete one though
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: UNIQUE constraint on table "idxpart" lacks column "b" which is part of the partition key.
|
|
alter table idxpart add unique (b, a); -- this works
|
|
\d idxpart
|
|
Partitioned table "public.idxpart"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
Partition key: RANGE (a, b)
|
|
Indexes:
|
|
"idxpart_b_a_key" UNIQUE CONSTRAINT, btree (b, a)
|
|
Number of partitions: 0
|
|
|
|
drop table idxpart;
|
|
-- Exclusion constraints cannot be added
|
|
create table idxpart (a int, b int) partition by range (a);
|
|
alter table idxpart add exclude (a with =);
|
|
ERROR: exclusion constraints are not supported on partitioned tables
|
|
LINE 1: alter table idxpart add exclude (a with =);
|
|
^
|
|
drop table idxpart;
|
|
-- When (sub)partitions are created, they also contain the constraint
|
|
create table idxpart (a int, b int, primary key (a, b)) partition by range (a, b);
|
|
create table idxpart1 partition of idxpart for values from (1, 1) to (10, 10);
|
|
create table idxpart2 partition of idxpart for values from (10, 10) to (20, 20)
|
|
partition by range (b);
|
|
create table idxpart21 partition of idxpart2 for values from (10) to (15);
|
|
create table idxpart22 partition of idxpart2 for values from (15) to (20);
|
|
create table idxpart3 (b int not null, a int not null);
|
|
alter table idxpart attach partition idxpart3 for values from (20, 20) to (30, 30);
|
|
select conname, contype, conrelid::regclass, conindid::regclass, conkey
|
|
from pg_constraint where conrelid::regclass::text like 'idxpart%'
|
|
order by conname;
|
|
conname | contype | conrelid | conindid | conkey
|
|
----------------+---------+-----------+----------------+--------
|
|
idxpart1_pkey | p | idxpart1 | idxpart1_pkey | {1,2}
|
|
idxpart21_pkey | p | idxpart21 | idxpart21_pkey | {1,2}
|
|
idxpart22_pkey | p | idxpart22 | idxpart22_pkey | {1,2}
|
|
idxpart2_pkey | p | idxpart2 | idxpart2_pkey | {1,2}
|
|
idxpart3_pkey | p | idxpart3 | idxpart3_pkey | {2,1}
|
|
idxpart_pkey | p | idxpart | idxpart_pkey | {1,2}
|
|
(6 rows)
|
|
|
|
drop table idxpart;
|
|
-- Verify that multi-layer partitioning honors the requirement that all
|
|
-- columns in the partition key must appear in primary/unique key
|
|
create table idxpart (a int, b int, primary key (a)) partition by range (a);
|
|
create table idxpart2 partition of idxpart
|
|
for values from (0) to (1000) partition by range (b); -- fail
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: PRIMARY KEY constraint on table "idxpart2" lacks column "b" which is part of the partition key.
|
|
drop table idxpart;
|
|
-- Ditto for the ATTACH PARTITION case
|
|
create table idxpart (a int unique, b int) partition by range (a);
|
|
create table idxpart1 (a int not null, b int, unique (a, b))
|
|
partition by range (a, b);
|
|
alter table idxpart attach partition idxpart1 for values from (1) to (1000);
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: UNIQUE constraint on table "idxpart1" lacks column "b" which is part of the partition key.
|
|
DROP TABLE idxpart, idxpart1;
|
|
-- Multi-layer partitioning works correctly in this case:
|
|
create table idxpart (a int, b int, primary key (a, b)) partition by range (a);
|
|
create table idxpart2 partition of idxpart for values from (0) to (1000) partition by range (b);
|
|
create table idxpart21 partition of idxpart2 for values from (0) to (1000);
|
|
select conname, contype, conrelid::regclass, conindid::regclass, conkey
|
|
from pg_constraint where conrelid::regclass::text like 'idxpart%'
|
|
order by conname;
|
|
conname | contype | conrelid | conindid | conkey
|
|
----------------+---------+-----------+----------------+--------
|
|
idxpart21_pkey | p | idxpart21 | idxpart21_pkey | {1,2}
|
|
idxpart2_pkey | p | idxpart2 | idxpart2_pkey | {1,2}
|
|
idxpart_pkey | p | idxpart | idxpart_pkey | {1,2}
|
|
(3 rows)
|
|
|
|
drop table idxpart;
|
|
-- If a partitioned table has a unique/PK constraint, then it's not possible
|
|
-- to drop the corresponding constraint in the children; nor it's possible
|
|
-- to drop the indexes individually. Dropping the constraint in the parent
|
|
-- gets rid of the lot.
|
|
create table idxpart (i int) partition by hash (i);
|
|
create table idxpart0 partition of idxpart (i) for values with (modulus 2, remainder 0);
|
|
create table idxpart1 partition of idxpart (i) for values with (modulus 2, remainder 1);
|
|
alter table idxpart0 add primary key(i);
|
|
alter table idxpart add primary key(i);
|
|
select indrelid::regclass, indexrelid::regclass, inhparent::regclass, indisvalid,
|
|
conname, conislocal, coninhcount, connoinherit, convalidated
|
|
from pg_index idx left join pg_inherits inh on (idx.indexrelid = inh.inhrelid)
|
|
left join pg_constraint con on (idx.indexrelid = con.conindid)
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
indrelid | indexrelid | inhparent | indisvalid | conname | conislocal | coninhcount | connoinherit | convalidated
|
|
----------+---------------+--------------+------------+---------------+------------+-------------+--------------+--------------
|
|
idxpart0 | idxpart0_pkey | idxpart_pkey | t | idxpart0_pkey | f | 1 | t | t
|
|
idxpart1 | idxpart1_pkey | idxpart_pkey | t | idxpart1_pkey | f | 1 | f | t
|
|
idxpart | idxpart_pkey | | t | idxpart_pkey | t | 0 | t | t
|
|
(3 rows)
|
|
|
|
drop index idxpart0_pkey; -- fail
|
|
ERROR: cannot drop index idxpart0_pkey because index idxpart_pkey requires it
|
|
HINT: You can drop index idxpart_pkey instead.
|
|
drop index idxpart1_pkey; -- fail
|
|
ERROR: cannot drop index idxpart1_pkey because index idxpart_pkey requires it
|
|
HINT: You can drop index idxpart_pkey instead.
|
|
alter table idxpart0 drop constraint idxpart0_pkey; -- fail
|
|
ERROR: cannot drop inherited constraint "idxpart0_pkey" of relation "idxpart0"
|
|
alter table idxpart1 drop constraint idxpart1_pkey; -- fail
|
|
ERROR: cannot drop inherited constraint "idxpart1_pkey" of relation "idxpart1"
|
|
alter table idxpart drop constraint idxpart_pkey; -- ok
|
|
select indrelid::regclass, indexrelid::regclass, inhparent::regclass, indisvalid,
|
|
conname, conislocal, coninhcount, connoinherit, convalidated
|
|
from pg_index idx left join pg_inherits inh on (idx.indexrelid = inh.inhrelid)
|
|
left join pg_constraint con on (idx.indexrelid = con.conindid)
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
indrelid | indexrelid | inhparent | indisvalid | conname | conislocal | coninhcount | connoinherit | convalidated
|
|
----------+------------+-----------+------------+---------+------------+-------------+--------------+--------------
|
|
(0 rows)
|
|
|
|
drop table idxpart;
|
|
-- If the partition to be attached already has a primary key, fail if
|
|
-- it doesn't match the parent's PK.
|
|
CREATE TABLE idxpart (c1 INT PRIMARY KEY, c2 INT, c3 VARCHAR(10)) PARTITION BY RANGE(c1);
|
|
CREATE TABLE idxpart1 (LIKE idxpart);
|
|
ALTER TABLE idxpart1 ADD PRIMARY KEY (c1, c2);
|
|
ALTER TABLE idxpart ATTACH PARTITION idxpart1 FOR VALUES FROM (100) TO (200);
|
|
ERROR: multiple primary keys for table "idxpart1" are not allowed
|
|
DROP TABLE idxpart, idxpart1;
|
|
-- Ditto if there is some distance between the PKs (subpartitioning)
|
|
create table idxpart (a int, b int, primary key (a)) partition by range (a);
|
|
create table idxpart1 (a int not null, b int) partition by range (a);
|
|
create table idxpart11 (a int not null, b int primary key);
|
|
alter table idxpart1 attach partition idxpart11 for values from (0) to (1000);
|
|
alter table idxpart attach partition idxpart1 for values from (0) to (10000);
|
|
ERROR: multiple primary keys for table "idxpart11" are not allowed
|
|
drop table idxpart, idxpart1, idxpart11;
|
|
-- If a partitioned table has a constraint whose index is not valid,
|
|
-- attaching a missing partition makes it valid.
|
|
create table idxpart (a int) partition by range (a);
|
|
create table idxpart0 (like idxpart);
|
|
alter table idxpart0 add primary key (a);
|
|
alter table idxpart attach partition idxpart0 for values from (0) to (1000);
|
|
alter table only idxpart add primary key (a);
|
|
select indrelid::regclass, indexrelid::regclass, inhparent::regclass, indisvalid,
|
|
conname, conislocal, coninhcount, connoinherit, convalidated
|
|
from pg_index idx left join pg_inherits inh on (idx.indexrelid = inh.inhrelid)
|
|
left join pg_constraint con on (idx.indexrelid = con.conindid)
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
indrelid | indexrelid | inhparent | indisvalid | conname | conislocal | coninhcount | connoinherit | convalidated
|
|
----------+---------------+-----------+------------+---------------+------------+-------------+--------------+--------------
|
|
idxpart0 | idxpart0_pkey | | t | idxpart0_pkey | t | 0 | t | t
|
|
idxpart | idxpart_pkey | | f | idxpart_pkey | t | 0 | t | t
|
|
(2 rows)
|
|
|
|
alter index idxpart_pkey attach partition idxpart0_pkey;
|
|
select indrelid::regclass, indexrelid::regclass, inhparent::regclass, indisvalid,
|
|
conname, conislocal, coninhcount, connoinherit, convalidated
|
|
from pg_index idx left join pg_inherits inh on (idx.indexrelid = inh.inhrelid)
|
|
left join pg_constraint con on (idx.indexrelid = con.conindid)
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
indrelid | indexrelid | inhparent | indisvalid | conname | conislocal | coninhcount | connoinherit | convalidated
|
|
----------+---------------+--------------+------------+---------------+------------+-------------+--------------+--------------
|
|
idxpart0 | idxpart0_pkey | idxpart_pkey | t | idxpart0_pkey | f | 1 | t | t
|
|
idxpart | idxpart_pkey | | t | idxpart_pkey | t | 0 | t | t
|
|
(2 rows)
|
|
|
|
drop table idxpart;
|
|
-- Related to the above scenario: ADD PRIMARY KEY on the parent mustn't
|
|
-- automatically propagate NOT NULL to child columns.
|
|
create table idxpart (a int) partition by range (a);
|
|
create table idxpart0 (like idxpart);
|
|
alter table idxpart0 add unique (a);
|
|
alter table idxpart attach partition idxpart0 default;
|
|
alter table only idxpart add primary key (a); -- fail, no NOT NULL constraint
|
|
ERROR: constraint must be added to child tables too
|
|
DETAIL: Column "a" of relation "idxpart0" is not already NOT NULL.
|
|
HINT: Do not specify the ONLY keyword.
|
|
alter table idxpart0 alter column a set not null;
|
|
alter table only idxpart add primary key (a); -- now it works
|
|
alter table idxpart0 alter column a drop not null; -- fail, pkey needs it
|
|
ERROR: column "a" is marked NOT NULL in parent table
|
|
drop table idxpart;
|
|
-- if a partition has a unique index without a constraint, does not attach
|
|
-- automatically; creates a new index instead.
|
|
create table idxpart (a int, b int) partition by range (a);
|
|
create table idxpart1 (a int not null, b int);
|
|
create unique index on idxpart1 (a);
|
|
alter table idxpart add primary key (a);
|
|
alter table idxpart attach partition idxpart1 for values from (1) to (1000);
|
|
select indrelid::regclass, indexrelid::regclass, inhparent::regclass, indisvalid,
|
|
conname, conislocal, coninhcount, connoinherit, convalidated
|
|
from pg_index idx left join pg_inherits inh on (idx.indexrelid = inh.inhrelid)
|
|
left join pg_constraint con on (idx.indexrelid = con.conindid)
|
|
where indrelid::regclass::text like 'idxpart%'
|
|
order by indexrelid::regclass::text collate "C";
|
|
indrelid | indexrelid | inhparent | indisvalid | conname | conislocal | coninhcount | connoinherit | convalidated
|
|
----------+----------------+--------------+------------+---------------+------------+-------------+--------------+--------------
|
|
idxpart1 | idxpart1_a_idx | | t | | | | |
|
|
idxpart1 | idxpart1_pkey | idxpart_pkey | t | idxpart1_pkey | f | 1 | f | t
|
|
idxpart | idxpart_pkey | | t | idxpart_pkey | t | 0 | t | t
|
|
(3 rows)
|
|
|
|
drop table idxpart;
|
|
-- Can't attach an index without a corresponding constraint
|
|
create table idxpart (a int, b int) partition by range (a);
|
|
create table idxpart1 (a int not null, b int);
|
|
create unique index on idxpart1 (a);
|
|
alter table idxpart attach partition idxpart1 for values from (1) to (1000);
|
|
alter table only idxpart add primary key (a);
|
|
alter index idxpart_pkey attach partition idxpart1_a_idx; -- fail
|
|
ERROR: cannot attach index "idxpart1_a_idx" as a partition of index "idxpart_pkey"
|
|
DETAIL: The index "idxpart_pkey" belongs to a constraint in table "idxpart" but no constraint exists for index "idxpart1_a_idx".
|
|
drop table idxpart;
|
|
-- Test that unique constraints are working
|
|
create table idxpart (a int, b text, primary key (a, b)) partition by range (a);
|
|
create table idxpart1 partition of idxpart for values from (0) to (100000);
|
|
create table idxpart2 (c int, like idxpart);
|
|
insert into idxpart2 (c, a, b) values (42, 572814, 'inserted first');
|
|
alter table idxpart2 drop column c;
|
|
create unique index on idxpart (a);
|
|
alter table idxpart attach partition idxpart2 for values from (100000) to (1000000);
|
|
insert into idxpart values (0, 'zero'), (42, 'life'), (2^16, 'sixteen');
|
|
insert into idxpart select 2^g, format('two to power of %s', g) from generate_series(15, 17) g;
|
|
ERROR: duplicate key value violates unique constraint "idxpart1_a_idx"
|
|
DETAIL: Key (a)=(65536) already exists.
|
|
insert into idxpart values (16, 'sixteen');
|
|
insert into idxpart (b, a) values ('one', 142857), ('two', 285714);
|
|
insert into idxpart select a * 2, b || b from idxpart where a between 2^16 and 2^19;
|
|
ERROR: duplicate key value violates unique constraint "idxpart2_a_idx"
|
|
DETAIL: Key (a)=(285714) already exists.
|
|
insert into idxpart values (572814, 'five');
|
|
ERROR: duplicate key value violates unique constraint "idxpart2_a_idx"
|
|
DETAIL: Key (a)=(572814) already exists.
|
|
insert into idxpart values (857142, 'six');
|
|
select tableoid::regclass, * from idxpart order by a;
|
|
tableoid | a | b
|
|
----------+--------+----------------
|
|
idxpart1 | 0 | zero
|
|
idxpart1 | 16 | sixteen
|
|
idxpart1 | 42 | life
|
|
idxpart1 | 65536 | sixteen
|
|
idxpart2 | 142857 | one
|
|
idxpart2 | 285714 | two
|
|
idxpart2 | 572814 | inserted first
|
|
idxpart2 | 857142 | six
|
|
(8 rows)
|
|
|
|
drop table idxpart;
|
|
-- intentionally leave some objects around
|
|
create table idxpart (a int) partition by range (a);
|
|
create table idxpart1 partition of idxpart for values from (0) to (100);
|
|
create table idxpart2 partition of idxpart for values from (100) to (1000)
|
|
partition by range (a);
|
|
create table idxpart21 partition of idxpart2 for values from (100) to (200);
|
|
create table idxpart22 partition of idxpart2 for values from (200) to (300);
|
|
create index on idxpart22 (a);
|
|
create index on only idxpart2 (a);
|
|
alter index idxpart2_a_idx attach partition idxpart22_a_idx;
|
|
create index on idxpart (a);
|
|
create table idxpart_another (a int, b int, primary key (a, b)) partition by range (a);
|
|
create table idxpart_another_1 partition of idxpart_another for values from (0) to (100);
|
|
create table idxpart3 (c int, b int, a int) partition by range (a);
|
|
alter table idxpart3 drop column b, drop column c;
|
|
create table idxpart31 partition of idxpart3 for values from (1000) to (1200);
|
|
create table idxpart32 partition of idxpart3 for values from (1200) to (1400);
|
|
alter table idxpart attach partition idxpart3 for values from (1000) to (2000);
|
|
-- More objects intentionally left behind, to verify some pg_dump/pg_upgrade
|
|
-- behavior; see https://postgr.es/m/20190321204928.GA17535@alvherre.pgsql
|
|
create schema regress_indexing;
|
|
set search_path to regress_indexing;
|
|
create table pk (a int primary key) partition by range (a);
|
|
create table pk1 partition of pk for values from (0) to (1000);
|
|
create table pk2 (b int, a int);
|
|
alter table pk2 drop column b;
|
|
alter table pk2 alter a set not null;
|
|
alter table pk attach partition pk2 for values from (1000) to (2000);
|
|
create table pk3 partition of pk for values from (2000) to (3000);
|
|
create table pk4 (like pk);
|
|
alter table pk attach partition pk4 for values from (3000) to (4000);
|
|
create table pk5 (like pk) partition by range (a);
|
|
create table pk51 partition of pk5 for values from (4000) to (4500);
|
|
create table pk52 partition of pk5 for values from (4500) to (5000);
|
|
alter table pk attach partition pk5 for values from (4000) to (5000);
|
|
reset search_path;
|
|
-- Test that covering partitioned indexes work in various cases
|
|
create table covidxpart (a int, b int) partition by list (a);
|
|
create unique index on covidxpart (a) include (b);
|
|
create table covidxpart1 partition of covidxpart for values in (1);
|
|
create table covidxpart2 partition of covidxpart for values in (2);
|
|
insert into covidxpart values (1, 1);
|
|
insert into covidxpart values (1, 1);
|
|
ERROR: duplicate key value violates unique constraint "covidxpart1_a_b_idx"
|
|
DETAIL: Key (a)=(1) already exists.
|
|
create table covidxpart3 (b int, c int, a int);
|
|
alter table covidxpart3 drop c;
|
|
alter table covidxpart attach partition covidxpart3 for values in (3);
|
|
insert into covidxpart values (3, 1);
|
|
insert into covidxpart values (3, 1);
|
|
ERROR: duplicate key value violates unique constraint "covidxpart3_a_b_idx"
|
|
DETAIL: Key (a)=(3) already exists.
|
|
create table covidxpart4 (b int, a int);
|
|
create unique index on covidxpart4 (a) include (b);
|
|
create unique index on covidxpart4 (a);
|
|
alter table covidxpart attach partition covidxpart4 for values in (4);
|
|
insert into covidxpart values (4, 1);
|
|
insert into covidxpart values (4, 1);
|
|
ERROR: duplicate key value violates unique constraint "covidxpart4_a_b_idx"
|
|
DETAIL: Key (a)=(4) already exists.
|
|
create unique index on covidxpart (b) include (a); -- should fail
|
|
ERROR: unique constraint on partitioned table must include all partitioning columns
|
|
DETAIL: UNIQUE constraint on table "covidxpart" lacks column "a" which is part of the partition key.
|
|
-- check that detaching a partition also detaches the primary key constraint
|
|
create table parted_pk_detach_test (a int primary key) partition by list (a);
|
|
create table parted_pk_detach_test1 partition of parted_pk_detach_test for values in (1);
|
|
alter table parted_pk_detach_test1 drop constraint parted_pk_detach_test1_pkey; -- should fail
|
|
ERROR: cannot drop inherited constraint "parted_pk_detach_test1_pkey" of relation "parted_pk_detach_test1"
|
|
alter table parted_pk_detach_test detach partition parted_pk_detach_test1;
|
|
alter table parted_pk_detach_test1 drop constraint parted_pk_detach_test1_pkey;
|
|
drop table parted_pk_detach_test, parted_pk_detach_test1;
|
|
create table parted_uniq_detach_test (a int unique) partition by list (a);
|
|
create table parted_uniq_detach_test1 partition of parted_uniq_detach_test for values in (1);
|
|
alter table parted_uniq_detach_test1 drop constraint parted_uniq_detach_test1_a_key; -- should fail
|
|
ERROR: cannot drop inherited constraint "parted_uniq_detach_test1_a_key" of relation "parted_uniq_detach_test1"
|
|
alter table parted_uniq_detach_test detach partition parted_uniq_detach_test1;
|
|
alter table parted_uniq_detach_test1 drop constraint parted_uniq_detach_test1_a_key;
|
|
drop table parted_uniq_detach_test, parted_uniq_detach_test1;
|
|
-- check that dropping a column takes with it any partitioned indexes
|
|
-- depending on it.
|
|
create table parted_index_col_drop(a int, b int, c int)
|
|
partition by list (a);
|
|
create table parted_index_col_drop1 partition of parted_index_col_drop
|
|
for values in (1) partition by list (a);
|
|
-- leave this partition without children.
|
|
create table parted_index_col_drop2 partition of parted_index_col_drop
|
|
for values in (2) partition by list (a);
|
|
create table parted_index_col_drop11 partition of parted_index_col_drop1
|
|
for values in (1);
|
|
create index on parted_index_col_drop (b);
|
|
create index on parted_index_col_drop (c);
|
|
create index on parted_index_col_drop (b, c);
|
|
alter table parted_index_col_drop drop column c;
|
|
\d parted_index_col_drop
|
|
Partitioned table "public.parted_index_col_drop"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
Partition key: LIST (a)
|
|
Indexes:
|
|
"parted_index_col_drop_b_idx" btree (b)
|
|
Number of partitions: 2 (Use \d+ to list them.)
|
|
|
|
\d parted_index_col_drop1
|
|
Partitioned table "public.parted_index_col_drop1"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
Partition of: parted_index_col_drop FOR VALUES IN (1)
|
|
Partition key: LIST (a)
|
|
Indexes:
|
|
"parted_index_col_drop1_b_idx" btree (b)
|
|
Number of partitions: 1 (Use \d+ to list them.)
|
|
|
|
\d parted_index_col_drop2
|
|
Partitioned table "public.parted_index_col_drop2"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
Partition of: parted_index_col_drop FOR VALUES IN (2)
|
|
Partition key: LIST (a)
|
|
Indexes:
|
|
"parted_index_col_drop2_b_idx" btree (b)
|
|
Number of partitions: 0
|
|
|
|
\d parted_index_col_drop11
|
|
Table "public.parted_index_col_drop11"
|
|
Column | Type | Collation | Nullable | Default
|
|
--------+---------+-----------+----------+---------
|
|
a | integer | | |
|
|
b | integer | | |
|
|
Partition of: parted_index_col_drop1 FOR VALUES IN (1)
|
|
Indexes:
|
|
"parted_index_col_drop11_b_idx" btree (b)
|
|
|
|
drop table parted_index_col_drop;
|