621 lines
23 KiB
Plaintext
621 lines
23 KiB
Plaintext
-- sanity check of system catalog
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SELECT attrelid, attname, attidentity FROM pg_attribute WHERE attidentity NOT IN ('', 'a', 'd');
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attrelid | attname | attidentity
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----------+---------+-------------
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(0 rows)
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CREATE TABLE itest1 (a int generated by default as identity, b text);
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CREATE TABLE itest2 (a bigint generated always as identity, b text);
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CREATE TABLE itest3 (a smallint generated by default as identity (start with 7 increment by 5), b text);
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ALTER TABLE itest3 ALTER COLUMN a ADD GENERATED ALWAYS AS IDENTITY; -- error
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ERROR: column "a" of relation "itest3" is already an identity column
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SELECT table_name, column_name, column_default, is_nullable, is_identity, identity_generation, identity_start, identity_increment, identity_maximum, identity_minimum, identity_cycle FROM information_schema.columns WHERE table_name LIKE 'itest_' ORDER BY 1, 2;
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table_name | column_name | column_default | is_nullable | is_identity | identity_generation | identity_start | identity_increment | identity_maximum | identity_minimum | identity_cycle
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------------+-------------+----------------+-------------+-------------+---------------------+----------------+--------------------+---------------------+------------------+----------------
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itest1 | a | | NO | YES | BY DEFAULT | 1 | 1 | 2147483647 | 1 | NO
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itest1 | b | | YES | NO | | | | | | NO
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itest2 | a | | NO | YES | ALWAYS | 1 | 1 | 9223372036854775807 | 1 | NO
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itest2 | b | | YES | NO | | | | | | NO
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itest3 | a | | NO | YES | BY DEFAULT | 7 | 5 | 32767 | 1 | NO
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itest3 | b | | YES | NO | | | | | | NO
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(6 rows)
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-- internal sequences should not be shown here
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SELECT sequence_name FROM information_schema.sequences WHERE sequence_name LIKE 'itest%';
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sequence_name
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---------------
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(0 rows)
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SELECT pg_get_serial_sequence('itest1', 'a');
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pg_get_serial_sequence
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------------------------
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public.itest1_a_seq
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(1 row)
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\d itest1_a_seq
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Sequence "public.itest1_a_seq"
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Type | Start | Minimum | Maximum | Increment | Cycles? | Cache
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---------+-------+---------+------------+-----------+---------+-------
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integer | 1 | 1 | 2147483647 | 1 | no | 1
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Sequence for identity column: public.itest1.a
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CREATE TABLE itest4 (a int, b text);
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ALTER TABLE itest4 ALTER COLUMN a ADD GENERATED ALWAYS AS IDENTITY; -- error, requires NOT NULL
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ERROR: column "a" of relation "itest4" must be declared NOT NULL before identity can be added
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ALTER TABLE itest4 ALTER COLUMN a SET NOT NULL;
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ALTER TABLE itest4 ALTER COLUMN a ADD GENERATED ALWAYS AS IDENTITY; -- ok
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ALTER TABLE itest4 ALTER COLUMN a DROP NOT NULL; -- error, disallowed
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ERROR: column "a" of relation "itest4" is an identity column
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ALTER TABLE itest4 ALTER COLUMN a ADD GENERATED ALWAYS AS IDENTITY; -- error, already set
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ERROR: column "a" of relation "itest4" is already an identity column
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ALTER TABLE itest4 ALTER COLUMN b ADD GENERATED ALWAYS AS IDENTITY; -- error, wrong data type
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ERROR: identity column type must be smallint, integer, or bigint
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-- for later
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ALTER TABLE itest4 ALTER COLUMN b SET DEFAULT '';
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-- invalid column type
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CREATE TABLE itest_err_1 (a text generated by default as identity);
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ERROR: identity column type must be smallint, integer, or bigint
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-- duplicate identity
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CREATE TABLE itest_err_2 (a int generated always as identity generated by default as identity);
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ERROR: multiple identity specifications for column "a" of table "itest_err_2"
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LINE 1: ...E itest_err_2 (a int generated always as identity generated ...
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^
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-- cannot have default and identity
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CREATE TABLE itest_err_3 (a int default 5 generated by default as identity);
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ERROR: both default and identity specified for column "a" of table "itest_err_3"
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LINE 1: CREATE TABLE itest_err_3 (a int default 5 generated by defau...
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^
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-- cannot combine serial and identity
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CREATE TABLE itest_err_4 (a serial generated by default as identity);
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ERROR: both default and identity specified for column "a" of table "itest_err_4"
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INSERT INTO itest1 DEFAULT VALUES;
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INSERT INTO itest1 DEFAULT VALUES;
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INSERT INTO itest2 DEFAULT VALUES;
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INSERT INTO itest2 DEFAULT VALUES;
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INSERT INTO itest3 DEFAULT VALUES;
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INSERT INTO itest3 DEFAULT VALUES;
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INSERT INTO itest4 DEFAULT VALUES;
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INSERT INTO itest4 DEFAULT VALUES;
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SELECT * FROM itest1;
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a | b
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---+---
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1 |
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2 |
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(2 rows)
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SELECT * FROM itest2;
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a | b
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---+---
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1 |
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2 |
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(2 rows)
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SELECT * FROM itest3;
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a | b
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----+---
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7 |
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12 |
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(2 rows)
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SELECT * FROM itest4;
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a | b
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---+---
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1 |
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2 |
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(2 rows)
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-- VALUES RTEs
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CREATE TABLE itest5 (a int generated always as identity, b text);
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INSERT INTO itest5 VALUES (1, 'a'); -- error
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ERROR: cannot insert a non-DEFAULT value into column "a"
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DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
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HINT: Use OVERRIDING SYSTEM VALUE to override.
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INSERT INTO itest5 VALUES (DEFAULT, 'a'); -- ok
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INSERT INTO itest5 VALUES (2, 'b'), (3, 'c'); -- error
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ERROR: cannot insert a non-DEFAULT value into column "a"
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DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
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HINT: Use OVERRIDING SYSTEM VALUE to override.
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INSERT INTO itest5 VALUES (DEFAULT, 'b'), (3, 'c'); -- error
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ERROR: cannot insert a non-DEFAULT value into column "a"
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DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
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HINT: Use OVERRIDING SYSTEM VALUE to override.
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INSERT INTO itest5 VALUES (2, 'b'), (DEFAULT, 'c'); -- error
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ERROR: cannot insert a non-DEFAULT value into column "a"
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DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
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HINT: Use OVERRIDING SYSTEM VALUE to override.
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INSERT INTO itest5 VALUES (DEFAULT, 'b'), (DEFAULT, 'c'); -- ok
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INSERT INTO itest5 OVERRIDING SYSTEM VALUE VALUES (-1, 'aa');
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INSERT INTO itest5 OVERRIDING SYSTEM VALUE VALUES (-2, 'bb'), (-3, 'cc');
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INSERT INTO itest5 OVERRIDING SYSTEM VALUE VALUES (DEFAULT, 'dd'), (-4, 'ee');
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INSERT INTO itest5 OVERRIDING SYSTEM VALUE VALUES (-5, 'ff'), (DEFAULT, 'gg');
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INSERT INTO itest5 OVERRIDING SYSTEM VALUE VALUES (DEFAULT, 'hh'), (DEFAULT, 'ii');
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INSERT INTO itest5 OVERRIDING USER VALUE VALUES (-1, 'aaa');
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INSERT INTO itest5 OVERRIDING USER VALUE VALUES (-2, 'bbb'), (-3, 'ccc');
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INSERT INTO itest5 OVERRIDING USER VALUE VALUES (DEFAULT, 'ddd'), (-4, 'eee');
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INSERT INTO itest5 OVERRIDING USER VALUE VALUES (-5, 'fff'), (DEFAULT, 'ggg');
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INSERT INTO itest5 OVERRIDING USER VALUE VALUES (DEFAULT, 'hhh'), (DEFAULT, 'iii');
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SELECT * FROM itest5;
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a | b
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----+-----
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1 | a
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2 | b
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3 | c
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-1 | aa
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-2 | bb
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-3 | cc
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4 | dd
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-4 | ee
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-5 | ff
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5 | gg
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6 | hh
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7 | ii
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8 | aaa
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9 | bbb
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10 | ccc
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11 | ddd
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12 | eee
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13 | fff
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14 | ggg
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15 | hhh
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16 | iii
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(21 rows)
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DROP TABLE itest5;
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INSERT INTO itest3 VALUES (DEFAULT, 'a');
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INSERT INTO itest3 VALUES (DEFAULT, 'b'), (DEFAULT, 'c');
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SELECT * FROM itest3;
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a | b
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----+---
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7 |
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12 |
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17 | a
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22 | b
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27 | c
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(5 rows)
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-- OVERRIDING tests
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-- GENERATED BY DEFAULT
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-- This inserts the row as presented:
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INSERT INTO itest1 VALUES (10, 'xyz');
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-- With GENERATED BY DEFAULT, OVERRIDING SYSTEM VALUE is not allowed
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-- by the standard, but we allow it as a no-op, since it is of use if
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-- there are multiple identity columns in a table, which is also an
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-- extension.
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INSERT INTO itest1 OVERRIDING SYSTEM VALUE VALUES (20, 'xyz');
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-- This ignores the 30 and uses the sequence value instead:
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INSERT INTO itest1 OVERRIDING USER VALUE VALUES (30, 'xyz');
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SELECT * FROM itest1;
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a | b
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----+-----
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1 |
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2 |
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10 | xyz
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20 | xyz
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3 | xyz
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(5 rows)
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-- GENERATED ALWAYS
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-- This is an error:
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INSERT INTO itest2 VALUES (10, 'xyz');
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ERROR: cannot insert a non-DEFAULT value into column "a"
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DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
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HINT: Use OVERRIDING SYSTEM VALUE to override.
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-- This inserts the row as presented:
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INSERT INTO itest2 OVERRIDING SYSTEM VALUE VALUES (20, 'xyz');
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-- This ignores the 30 and uses the sequence value instead:
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INSERT INTO itest2 OVERRIDING USER VALUE VALUES (30, 'xyz');
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SELECT * FROM itest2;
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a | b
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----+-----
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1 |
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2 |
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20 | xyz
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3 | xyz
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(4 rows)
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-- UPDATE tests
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-- GENERATED BY DEFAULT is not restricted.
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UPDATE itest1 SET a = 101 WHERE a = 1;
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UPDATE itest1 SET a = DEFAULT WHERE a = 2;
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SELECT * FROM itest1;
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a | b
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-----+-----
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10 | xyz
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20 | xyz
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3 | xyz
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101 |
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4 |
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(5 rows)
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-- GENERATED ALWAYS allows only DEFAULT.
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UPDATE itest2 SET a = 101 WHERE a = 1; -- error
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ERROR: column "a" can only be updated to DEFAULT
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DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
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UPDATE itest2 SET a = DEFAULT WHERE a = 2; -- ok
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SELECT * FROM itest2;
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a | b
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----+-----
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1 |
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20 | xyz
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3 | xyz
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4 |
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(4 rows)
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-- COPY tests
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CREATE TABLE itest9 (a int GENERATED ALWAYS AS IDENTITY, b text, c bigint);
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COPY itest9 FROM stdin;
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COPY itest9 (b, c) FROM stdin;
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SELECT * FROM itest9 ORDER BY c;
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a | b | c
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-----+------+-----
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100 | foo | 200
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101 | bar | 201
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1 | foo2 | 202
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2 | bar2 | 203
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(4 rows)
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-- DROP IDENTITY tests
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ALTER TABLE itest4 ALTER COLUMN a DROP IDENTITY;
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ALTER TABLE itest4 ALTER COLUMN a DROP IDENTITY; -- error
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ERROR: column "a" of relation "itest4" is not an identity column
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ALTER TABLE itest4 ALTER COLUMN a DROP IDENTITY IF EXISTS; -- noop
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NOTICE: column "a" of relation "itest4" is not an identity column, skipping
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INSERT INTO itest4 DEFAULT VALUES; -- fails because NOT NULL is not dropped
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ERROR: null value in column "a" of relation "itest4" violates not-null constraint
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DETAIL: Failing row contains (null, ).
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ALTER TABLE itest4 ALTER COLUMN a DROP NOT NULL;
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INSERT INTO itest4 DEFAULT VALUES;
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SELECT * FROM itest4;
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a | b
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---+---
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1 |
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2 |
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(3 rows)
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-- check that sequence is removed
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SELECT sequence_name FROM itest4_a_seq;
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ERROR: relation "itest4_a_seq" does not exist
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LINE 1: SELECT sequence_name FROM itest4_a_seq;
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^
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-- test views
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CREATE TABLE itest10 (a int generated by default as identity, b text);
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CREATE TABLE itest11 (a int generated always as identity, b text);
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CREATE VIEW itestv10 AS SELECT * FROM itest10;
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CREATE VIEW itestv11 AS SELECT * FROM itest11;
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INSERT INTO itestv10 DEFAULT VALUES;
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INSERT INTO itestv10 DEFAULT VALUES;
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INSERT INTO itestv11 DEFAULT VALUES;
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INSERT INTO itestv11 DEFAULT VALUES;
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SELECT * FROM itestv10;
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a | b
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---+---
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1 |
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2 |
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(2 rows)
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SELECT * FROM itestv11;
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a | b
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---+---
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1 |
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2 |
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(2 rows)
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INSERT INTO itestv10 VALUES (10, 'xyz');
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INSERT INTO itestv10 OVERRIDING USER VALUE VALUES (11, 'xyz');
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SELECT * FROM itestv10;
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a | b
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----+-----
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1 |
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2 |
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10 | xyz
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3 | xyz
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(4 rows)
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INSERT INTO itestv11 VALUES (10, 'xyz');
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ERROR: cannot insert a non-DEFAULT value into column "a"
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DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
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HINT: Use OVERRIDING SYSTEM VALUE to override.
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INSERT INTO itestv11 OVERRIDING SYSTEM VALUE VALUES (11, 'xyz');
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SELECT * FROM itestv11;
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a | b
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----+-----
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1 |
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2 |
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11 | xyz
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(3 rows)
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DROP VIEW itestv10, itestv11;
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-- ADD COLUMN
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CREATE TABLE itest13 (a int);
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-- add column to empty table
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ALTER TABLE itest13 ADD COLUMN b int GENERATED BY DEFAULT AS IDENTITY;
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INSERT INTO itest13 VALUES (1), (2), (3);
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-- add column to populated table
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ALTER TABLE itest13 ADD COLUMN c int GENERATED BY DEFAULT AS IDENTITY;
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SELECT * FROM itest13;
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a | b | c
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---+---+---
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1 | 1 | 1
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2 | 2 | 2
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3 | 3 | 3
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(3 rows)
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-- various ALTER COLUMN tests
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-- fail, not allowed for identity columns
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ALTER TABLE itest1 ALTER COLUMN a SET DEFAULT 1;
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ERROR: column "a" of relation "itest1" is an identity column
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-- fail, not allowed, already has a default
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CREATE TABLE itest5 (a serial, b text);
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ALTER TABLE itest5 ALTER COLUMN a ADD GENERATED ALWAYS AS IDENTITY;
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ERROR: column "a" of relation "itest5" already has a default value
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ALTER TABLE itest3 ALTER COLUMN a TYPE int;
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SELECT seqtypid::regtype FROM pg_sequence WHERE seqrelid = 'itest3_a_seq'::regclass;
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seqtypid
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----------
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integer
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(1 row)
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\d itest3
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Table "public.itest3"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+----------------------------------
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a | integer | | not null | generated by default as identity
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b | text | | |
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ALTER TABLE itest3 ALTER COLUMN a TYPE text; -- error
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ERROR: identity column type must be smallint, integer, or bigint
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-- kinda silly to change property in the same command, but it should work
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ALTER TABLE itest3
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ADD COLUMN c int GENERATED BY DEFAULT AS IDENTITY,
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ALTER COLUMN c SET GENERATED ALWAYS;
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\d itest3
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Table "public.itest3"
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Column | Type | Collation | Nullable | Default
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--------+---------+-----------+----------+----------------------------------
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a | integer | | not null | generated by default as identity
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b | text | | |
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c | integer | | not null | generated always as identity
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-- ALTER COLUMN ... SET
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CREATE TABLE itest6 (a int GENERATED ALWAYS AS IDENTITY, b text);
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INSERT INTO itest6 DEFAULT VALUES;
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ALTER TABLE itest6 ALTER COLUMN a SET GENERATED BY DEFAULT SET INCREMENT BY 2 SET START WITH 100 RESTART;
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INSERT INTO itest6 DEFAULT VALUES;
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INSERT INTO itest6 DEFAULT VALUES;
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SELECT * FROM itest6;
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a | b
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-----+---
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1 |
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100 |
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102 |
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(3 rows)
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SELECT table_name, column_name, is_identity, identity_generation FROM information_schema.columns WHERE table_name = 'itest6' ORDER BY 1, 2;
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table_name | column_name | is_identity | identity_generation
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------------+-------------+-------------+---------------------
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itest6 | a | YES | BY DEFAULT
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itest6 | b | NO |
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(2 rows)
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ALTER TABLE itest6 ALTER COLUMN b SET INCREMENT BY 2; -- fail, not identity
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ERROR: column "b" of relation "itest6" is not an identity column
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-- prohibited direct modification of sequence
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ALTER SEQUENCE itest6_a_seq OWNED BY NONE;
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ERROR: cannot change ownership of identity sequence
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DETAIL: Sequence "itest6_a_seq" is linked to table "itest6".
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-- inheritance
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CREATE TABLE itest7 (a int GENERATED ALWAYS AS IDENTITY);
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INSERT INTO itest7 DEFAULT VALUES;
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SELECT * FROM itest7;
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a
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---
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1
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(1 row)
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-- identity property is not inherited
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CREATE TABLE itest7a (b text) INHERITS (itest7);
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-- make column identity in child table
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CREATE TABLE itest7b (a int);
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CREATE TABLE itest7c (a int GENERATED ALWAYS AS IDENTITY) INHERITS (itest7b);
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NOTICE: merging column "a" with inherited definition
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INSERT INTO itest7c DEFAULT VALUES;
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SELECT * FROM itest7c;
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a
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---
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1
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(1 row)
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CREATE TABLE itest7d (a int not null);
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CREATE TABLE itest7e () INHERITS (itest7d);
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ALTER TABLE itest7d ALTER COLUMN a ADD GENERATED ALWAYS AS IDENTITY;
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ALTER TABLE itest7d ADD COLUMN b int GENERATED ALWAYS AS IDENTITY; -- error
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ERROR: cannot recursively add identity column to table that has child tables
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SELECT table_name, column_name, is_nullable, is_identity, identity_generation FROM information_schema.columns WHERE table_name LIKE 'itest7%' ORDER BY 1, 2;
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table_name | column_name | is_nullable | is_identity | identity_generation
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------------+-------------+-------------+-------------+---------------------
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itest7 | a | NO | YES | ALWAYS
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itest7a | a | NO | NO |
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itest7a | b | YES | NO |
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itest7b | a | YES | NO |
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itest7c | a | NO | YES | ALWAYS
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itest7d | a | NO | YES | ALWAYS
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itest7e | a | NO | NO |
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(7 rows)
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-- These ALTER TABLE variants will not recurse.
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ALTER TABLE itest7 ALTER COLUMN a SET GENERATED BY DEFAULT;
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ALTER TABLE itest7 ALTER COLUMN a RESTART;
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ALTER TABLE itest7 ALTER COLUMN a DROP IDENTITY;
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-- privileges
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CREATE USER regress_identity_user1;
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CREATE TABLE itest8 (a int GENERATED ALWAYS AS IDENTITY, b text);
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GRANT SELECT, INSERT ON itest8 TO regress_identity_user1;
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SET ROLE regress_identity_user1;
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INSERT INTO itest8 DEFAULT VALUES;
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SELECT * FROM itest8;
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a | b
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---+---
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1 |
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(1 row)
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RESET ROLE;
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DROP TABLE itest8;
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DROP USER regress_identity_user1;
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-- multiple steps in ALTER TABLE
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CREATE TABLE itest8 (f1 int);
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ALTER TABLE itest8
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ADD COLUMN f2 int NOT NULL,
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ALTER COLUMN f2 ADD GENERATED ALWAYS AS IDENTITY;
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ALTER TABLE itest8
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ADD COLUMN f3 int NOT NULL,
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ALTER COLUMN f3 ADD GENERATED ALWAYS AS IDENTITY,
|
|
ALTER COLUMN f3 SET GENERATED BY DEFAULT SET INCREMENT 10;
|
|
ALTER TABLE itest8
|
|
ADD COLUMN f4 int;
|
|
ALTER TABLE itest8
|
|
ALTER COLUMN f4 SET NOT NULL,
|
|
ALTER COLUMN f4 ADD GENERATED ALWAYS AS IDENTITY,
|
|
ALTER COLUMN f4 SET DATA TYPE bigint;
|
|
ALTER TABLE itest8
|
|
ADD COLUMN f5 int GENERATED ALWAYS AS IDENTITY;
|
|
ALTER TABLE itest8
|
|
ALTER COLUMN f5 DROP IDENTITY,
|
|
ALTER COLUMN f5 DROP NOT NULL,
|
|
ALTER COLUMN f5 SET DATA TYPE bigint;
|
|
INSERT INTO itest8 VALUES(0), (1);
|
|
-- This does not work when the table isn't empty. That's intentional,
|
|
-- since ADD GENERATED should only affect later insertions:
|
|
ALTER TABLE itest8
|
|
ADD COLUMN f22 int NOT NULL,
|
|
ALTER COLUMN f22 ADD GENERATED ALWAYS AS IDENTITY;
|
|
ERROR: column "f22" of relation "itest8" contains null values
|
|
TABLE itest8;
|
|
f1 | f2 | f3 | f4 | f5
|
|
----+----+----+----+----
|
|
0 | 1 | 1 | 1 |
|
|
1 | 2 | 11 | 2 |
|
|
(2 rows)
|
|
|
|
\d+ itest8
|
|
Table "public.itest8"
|
|
Column | Type | Collation | Nullable | Default | Storage | Stats target | Description
|
|
--------+---------+-----------+----------+----------------------------------+---------+--------------+-------------
|
|
f1 | integer | | | | plain | |
|
|
f2 | integer | | not null | generated always as identity | plain | |
|
|
f3 | integer | | not null | generated by default as identity | plain | |
|
|
f4 | bigint | | not null | generated always as identity | plain | |
|
|
f5 | bigint | | | | plain | |
|
|
Not-null constraints:
|
|
"itest8_f2_not_null" NOT NULL "f2"
|
|
"itest8_f3_not_null" NOT NULL "f3"
|
|
"itest8_f4_not_null" NOT NULL "f4"
|
|
|
|
\d itest8_f2_seq
|
|
Sequence "public.itest8_f2_seq"
|
|
Type | Start | Minimum | Maximum | Increment | Cycles? | Cache
|
|
---------+-------+---------+------------+-----------+---------+-------
|
|
integer | 1 | 1 | 2147483647 | 1 | no | 1
|
|
Sequence for identity column: public.itest8.f2
|
|
|
|
\d itest8_f3_seq
|
|
Sequence "public.itest8_f3_seq"
|
|
Type | Start | Minimum | Maximum | Increment | Cycles? | Cache
|
|
---------+-------+---------+------------+-----------+---------+-------
|
|
integer | 1 | 1 | 2147483647 | 10 | no | 1
|
|
Sequence for identity column: public.itest8.f3
|
|
|
|
\d itest8_f4_seq
|
|
Sequence "public.itest8_f4_seq"
|
|
Type | Start | Minimum | Maximum | Increment | Cycles? | Cache
|
|
--------+-------+---------+---------------------+-----------+---------+-------
|
|
bigint | 1 | 1 | 9223372036854775807 | 1 | no | 1
|
|
Sequence for identity column: public.itest8.f4
|
|
|
|
\d itest8_f5_seq
|
|
DROP TABLE itest8;
|
|
-- typed tables (currently not supported)
|
|
CREATE TYPE itest_type AS (f1 integer, f2 text, f3 bigint);
|
|
CREATE TABLE itest12 OF itest_type (f1 WITH OPTIONS GENERATED ALWAYS AS IDENTITY); -- error
|
|
ERROR: identity columns are not supported on typed tables
|
|
DROP TYPE itest_type CASCADE;
|
|
-- table partitions (currently not supported)
|
|
CREATE TABLE itest_parent (f1 date NOT NULL, f2 text, f3 bigint) PARTITION BY RANGE (f1);
|
|
CREATE TABLE itest_child PARTITION OF itest_parent (
|
|
f3 WITH OPTIONS GENERATED ALWAYS AS IDENTITY
|
|
) FOR VALUES FROM ('2016-07-01') TO ('2016-08-01'); -- error
|
|
ERROR: identity columns are not supported on partitions
|
|
DROP TABLE itest_parent;
|
|
-- test that sequence of half-dropped serial column is properly ignored
|
|
CREATE TABLE itest14 (id serial);
|
|
ALTER TABLE itest14 ALTER id DROP DEFAULT;
|
|
ALTER TABLE itest14 ALTER id ADD GENERATED BY DEFAULT AS IDENTITY;
|
|
INSERT INTO itest14 (id) VALUES (DEFAULT);
|
|
-- Identity columns must be NOT NULL (cf bug #16913)
|
|
CREATE TABLE itest15 (id integer GENERATED ALWAYS AS IDENTITY NULL); -- fail
|
|
ERROR: conflicting NULL/NOT NULL declarations for column "id" of table "itest15"
|
|
LINE 1: ...ABLE itest15 (id integer GENERATED ALWAYS AS IDENTITY NULL);
|
|
^
|
|
CREATE TABLE itest15 (id integer NULL GENERATED ALWAYS AS IDENTITY); -- fail
|
|
ERROR: conflicting NULL/NOT NULL declarations for column "id" of table "itest15"
|
|
LINE 1: CREATE TABLE itest15 (id integer NULL GENERATED ALWAYS AS ID...
|
|
^
|
|
CREATE TABLE itest15 (id integer GENERATED ALWAYS AS IDENTITY NOT NULL);
|
|
DROP TABLE itest15;
|
|
CREATE TABLE itest15 (id integer NOT NULL GENERATED ALWAYS AS IDENTITY);
|
|
DROP TABLE itest15;
|
|
-- MERGE tests
|
|
CREATE TABLE itest15 (a int GENERATED ALWAYS AS IDENTITY, b text);
|
|
CREATE TABLE itest16 (a int GENERATED BY DEFAULT AS IDENTITY, b text);
|
|
MERGE INTO itest15 t
|
|
USING (SELECT 10 AS s_a, 'inserted by merge' AS s_b) s
|
|
ON t.a = s.s_a
|
|
WHEN NOT MATCHED THEN
|
|
INSERT (a, b) VALUES (s.s_a, s.s_b);
|
|
ERROR: cannot insert a non-DEFAULT value into column "a"
|
|
DETAIL: Column "a" is an identity column defined as GENERATED ALWAYS.
|
|
HINT: Use OVERRIDING SYSTEM VALUE to override.
|
|
-- Used to fail, but now it works and ignores the user supplied value
|
|
MERGE INTO itest15 t
|
|
USING (SELECT 20 AS s_a, 'inserted by merge' AS s_b) s
|
|
ON t.a = s.s_a
|
|
WHEN NOT MATCHED THEN
|
|
INSERT (a, b) OVERRIDING USER VALUE VALUES (s.s_a, s.s_b);
|
|
MERGE INTO itest15 t
|
|
USING (SELECT 30 AS s_a, 'inserted by merge' AS s_b) s
|
|
ON t.a = s.s_a
|
|
WHEN NOT MATCHED THEN
|
|
INSERT (a, b) OVERRIDING SYSTEM VALUE VALUES (s.s_a, s.s_b);
|
|
MERGE INTO itest16 t
|
|
USING (SELECT 10 AS s_a, 'inserted by merge' AS s_b) s
|
|
ON t.a = s.s_a
|
|
WHEN NOT MATCHED THEN
|
|
INSERT (a, b) VALUES (s.s_a, s.s_b);
|
|
MERGE INTO itest16 t
|
|
USING (SELECT 20 AS s_a, 'inserted by merge' AS s_b) s
|
|
ON t.a = s.s_a
|
|
WHEN NOT MATCHED THEN
|
|
INSERT (a, b) OVERRIDING USER VALUE VALUES (s.s_a, s.s_b);
|
|
MERGE INTO itest16 t
|
|
USING (SELECT 30 AS s_a, 'inserted by merge' AS s_b) s
|
|
ON t.a = s.s_a
|
|
WHEN NOT MATCHED THEN
|
|
INSERT (a, b) OVERRIDING SYSTEM VALUE VALUES (s.s_a, s.s_b);
|
|
SELECT * FROM itest15;
|
|
a | b
|
|
----+-------------------
|
|
1 | inserted by merge
|
|
30 | inserted by merge
|
|
(2 rows)
|
|
|
|
SELECT * FROM itest16;
|
|
a | b
|
|
----+-------------------
|
|
10 | inserted by merge
|
|
1 | inserted by merge
|
|
30 | inserted by merge
|
|
(3 rows)
|
|
|
|
DROP TABLE itest15;
|
|
DROP TABLE itest16;
|