93 lines
4.1 KiB
Plaintext
93 lines
4.1 KiB
Plaintext
-- Core must test WITHOUT OVERLAPS
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-- with an int4range + daterange,
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-- so here we do some simple tests
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-- to make sure int + daterange works too,
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-- since that is the expected use-case.
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CREATE TABLE temporal_rng (
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id integer,
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valid_at daterange,
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CONSTRAINT temporal_rng_pk PRIMARY KEY (id, valid_at WITHOUT OVERLAPS)
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);
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\d temporal_rng
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Table "public.temporal_rng"
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Column | Type | Collation | Nullable | Default
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----------+-----------+-----------+----------+---------
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id | integer | | not null |
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valid_at | daterange | | not null |
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Indexes:
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"temporal_rng_pk" PRIMARY KEY (id, valid_at WITHOUT OVERLAPS)
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SELECT pg_get_constraintdef(oid) FROM pg_constraint WHERE conname = 'temporal_rng_pk';
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pg_get_constraintdef
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---------------------------------------------
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PRIMARY KEY (id, valid_at WITHOUT OVERLAPS)
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(1 row)
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SELECT pg_get_indexdef(conindid, 0, true) FROM pg_constraint WHERE conname = 'temporal_rng_pk';
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pg_get_indexdef
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-------------------------------------------------------------------------------
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CREATE UNIQUE INDEX temporal_rng_pk ON temporal_rng USING gist (id, valid_at)
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(1 row)
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INSERT INTO temporal_rng VALUES
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(1, '[2000-01-01,2001-01-01)');
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-- same key, doesn't overlap:
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INSERT INTO temporal_rng VALUES
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(1, '[2001-01-01,2002-01-01)');
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-- overlaps but different key:
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INSERT INTO temporal_rng VALUES
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(2, '[2000-01-01,2001-01-01)');
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-- should fail:
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INSERT INTO temporal_rng VALUES
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(1, '[2000-06-01,2001-01-01)');
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ERROR: conflicting key value violates exclusion constraint "temporal_rng_pk"
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DETAIL: Key (id, valid_at)=(1, [06-01-2000,01-01-2001)) conflicts with existing key (id, valid_at)=(1, [01-01-2000,01-01-2001)).
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-- Foreign key
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CREATE TABLE temporal_fk_rng2rng (
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id integer,
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valid_at daterange,
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parent_id integer,
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CONSTRAINT temporal_fk_rng2rng_pk PRIMARY KEY (id, valid_at WITHOUT OVERLAPS),
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CONSTRAINT temporal_fk_rng2rng_fk FOREIGN KEY (parent_id, PERIOD valid_at)
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REFERENCES temporal_rng (id, PERIOD valid_at)
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);
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\d temporal_fk_rng2rng
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Table "public.temporal_fk_rng2rng"
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Column | Type | Collation | Nullable | Default
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-----------+-----------+-----------+----------+---------
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id | integer | | not null |
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valid_at | daterange | | not null |
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parent_id | integer | | |
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Indexes:
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"temporal_fk_rng2rng_pk" PRIMARY KEY (id, valid_at WITHOUT OVERLAPS)
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Foreign-key constraints:
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"temporal_fk_rng2rng_fk" FOREIGN KEY (parent_id, PERIOD valid_at) REFERENCES temporal_rng(id, PERIOD valid_at)
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SELECT pg_get_constraintdef(oid) FROM pg_constraint WHERE conname = 'temporal_fk_rng2rng_fk';
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pg_get_constraintdef
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---------------------------------------------------------------------------------------
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FOREIGN KEY (parent_id, PERIOD valid_at) REFERENCES temporal_rng(id, PERIOD valid_at)
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(1 row)
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-- okay
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INSERT INTO temporal_fk_rng2rng VALUES
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(1, '[2000-01-01,2001-01-01)', 1);
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-- okay spanning two parent records:
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INSERT INTO temporal_fk_rng2rng VALUES
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(2, '[2000-01-01,2002-01-01)', 1);
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-- key is missing
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INSERT INTO temporal_fk_rng2rng VALUES
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(3, '[2000-01-01,2001-01-01)', 3);
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ERROR: insert or update on table "temporal_fk_rng2rng" violates foreign key constraint "temporal_fk_rng2rng_fk"
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DETAIL: Key (parent_id, valid_at)=(3, [01-01-2000,01-01-2001)) is not present in table "temporal_rng".
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-- key exist but is outside range
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INSERT INTO temporal_fk_rng2rng VALUES
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(4, '[2001-01-01,2002-01-01)', 2);
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ERROR: insert or update on table "temporal_fk_rng2rng" violates foreign key constraint "temporal_fk_rng2rng_fk"
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DETAIL: Key (parent_id, valid_at)=(2, [01-01-2001,01-01-2002)) is not present in table "temporal_rng".
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-- key exist but is partly outside range
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INSERT INTO temporal_fk_rng2rng VALUES
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(5, '[2000-01-01,2002-01-01)', 2);
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ERROR: insert or update on table "temporal_fk_rng2rng" violates foreign key constraint "temporal_fk_rng2rng_fk"
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DETAIL: Key (parent_id, valid_at)=(2, [01-01-2000,01-01-2002)) is not present in table "temporal_rng".
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