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5925e55498
This adds a built-in function to generate UUIDs. PostgreSQL hasn't had a built-in function to generate a UUID yet, relying on external modules such as uuid-ossp and pgcrypto to provide one. Now that we have a strong random number generator built-in, we can easily provide a version 4 (random) UUID generation function. This patch takes the existing function gen_random_uuid() from pgcrypto and makes it a built-in function. The pgcrypto implementation now internally redirects to the built-in one. Reviewed-by: Fabien COELHO <coelho@cri.ensmp.fr> Discussion: https://www.postgresql.org/message-id/6a65610c-46fc-2323-6b78-e8086340a325@2ndquadrant.com
160 lines
5.3 KiB
Plaintext
160 lines
5.3 KiB
Plaintext
-- regression test for the uuid datatype
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-- creating test tables
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CREATE TABLE guid1
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(
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guid_field UUID,
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text_field TEXT DEFAULT(now())
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);
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CREATE TABLE guid2
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(
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guid_field UUID,
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text_field TEXT DEFAULT(now())
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);
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-- inserting invalid data tests
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-- too long
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INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-1111-111111111111F');
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ERROR: invalid input syntax for type uuid: "11111111-1111-1111-1111-111111111111F"
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LINE 1: INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-111...
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^
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-- too short
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INSERT INTO guid1(guid_field) VALUES('{11111111-1111-1111-1111-11111111111}');
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ERROR: invalid input syntax for type uuid: "{11111111-1111-1111-1111-11111111111}"
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LINE 1: INSERT INTO guid1(guid_field) VALUES('{11111111-1111-1111-11...
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^
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-- valid data but invalid format
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INSERT INTO guid1(guid_field) VALUES('111-11111-1111-1111-1111-111111111111');
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ERROR: invalid input syntax for type uuid: "111-11111-1111-1111-1111-111111111111"
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LINE 1: INSERT INTO guid1(guid_field) VALUES('111-11111-1111-1111-11...
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^
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INSERT INTO guid1(guid_field) VALUES('{22222222-2222-2222-2222-222222222222 ');
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ERROR: invalid input syntax for type uuid: "{22222222-2222-2222-2222-222222222222 "
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LINE 1: INSERT INTO guid1(guid_field) VALUES('{22222222-2222-2222-22...
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^
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-- invalid data
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INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-G111-111111111111');
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ERROR: invalid input syntax for type uuid: "11111111-1111-1111-G111-111111111111"
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LINE 1: INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-G11...
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^
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INSERT INTO guid1(guid_field) VALUES('11+11111-1111-1111-1111-111111111111');
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ERROR: invalid input syntax for type uuid: "11+11111-1111-1111-1111-111111111111"
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LINE 1: INSERT INTO guid1(guid_field) VALUES('11+11111-1111-1111-111...
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^
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--inserting three input formats
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INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-1111-111111111111');
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INSERT INTO guid1(guid_field) VALUES('{22222222-2222-2222-2222-222222222222}');
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INSERT INTO guid1(guid_field) VALUES('3f3e3c3b3a3039383736353433a2313e');
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-- retrieving the inserted data
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SELECT guid_field FROM guid1;
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guid_field
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--------------------------------------
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11111111-1111-1111-1111-111111111111
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22222222-2222-2222-2222-222222222222
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3f3e3c3b-3a30-3938-3736-353433a2313e
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(3 rows)
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-- ordering test
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SELECT guid_field FROM guid1 ORDER BY guid_field ASC;
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guid_field
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--------------------------------------
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11111111-1111-1111-1111-111111111111
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22222222-2222-2222-2222-222222222222
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3f3e3c3b-3a30-3938-3736-353433a2313e
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(3 rows)
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SELECT guid_field FROM guid1 ORDER BY guid_field DESC;
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guid_field
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--------------------------------------
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3f3e3c3b-3a30-3938-3736-353433a2313e
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22222222-2222-2222-2222-222222222222
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11111111-1111-1111-1111-111111111111
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(3 rows)
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-- = operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field = '3f3e3c3b-3a30-3938-3736-353433a2313e';
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count
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-------
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1
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(1 row)
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-- <> operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field <> '11111111111111111111111111111111';
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count
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-------
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2
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(1 row)
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-- < operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field < '22222222-2222-2222-2222-222222222222';
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count
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-------
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1
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(1 row)
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-- <= operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field <= '22222222-2222-2222-2222-222222222222';
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count
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-------
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2
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(1 row)
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-- > operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field > '22222222-2222-2222-2222-222222222222';
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count
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-------
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1
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(1 row)
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-- >= operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field >= '22222222-2222-2222-2222-222222222222';
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count
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-------
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2
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(1 row)
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-- btree and hash index creation test
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CREATE INDEX guid1_btree ON guid1 USING BTREE (guid_field);
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CREATE INDEX guid1_hash ON guid1 USING HASH (guid_field);
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-- unique index test
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CREATE UNIQUE INDEX guid1_unique_BTREE ON guid1 USING BTREE (guid_field);
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-- should fail
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INSERT INTO guid1(guid_field) VALUES('11111111-1111-1111-1111-111111111111');
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ERROR: duplicate key value violates unique constraint "guid1_unique_btree"
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DETAIL: Key (guid_field)=(11111111-1111-1111-1111-111111111111) already exists.
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-- check to see whether the new indexes are actually there
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SELECT count(*) FROM pg_class WHERE relkind='i' AND relname LIKE 'guid%';
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count
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-------
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3
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(1 row)
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-- populating the test tables with additional records
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INSERT INTO guid1(guid_field) VALUES('44444444-4444-4444-4444-444444444444');
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INSERT INTO guid2(guid_field) VALUES('11111111-1111-1111-1111-111111111111');
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INSERT INTO guid2(guid_field) VALUES('{22222222-2222-2222-2222-222222222222}');
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INSERT INTO guid2(guid_field) VALUES('3f3e3c3b3a3039383736353433a2313e');
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-- join test
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SELECT COUNT(*) FROM guid1 g1 INNER JOIN guid2 g2 ON g1.guid_field = g2.guid_field;
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count
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-------
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3
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(1 row)
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SELECT COUNT(*) FROM guid1 g1 LEFT JOIN guid2 g2 ON g1.guid_field = g2.guid_field WHERE g2.guid_field IS NULL;
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count
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-------
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1
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(1 row)
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-- generation test
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TRUNCATE guid1;
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INSERT INTO guid1 (guid_field) VALUES (gen_random_uuid());
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INSERT INTO guid1 (guid_field) VALUES (gen_random_uuid());
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SELECT count(DISTINCT guid_field) FROM guid1;
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count
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-------
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2
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(1 row)
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-- clean up
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DROP TABLE guid1, guid2 CASCADE;
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