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ba21f5bf8a
This enables the use of functions such as encode() and decode() with UUID values, allowing them to be converted to and from alternative formats like base64 or hex. The cast maps the 16-byte internal representation of a UUID directly to a bytea datum. This is more efficient than going through a text forepresentation. Bump catalog version. Author: Dagfinn Ilmari Mannsåker <ilmari@ilmari.org> Co-authored-by: Aleksander Alekseev <aleksander@tigerdata.com> Reviewed-by: Masahiko Sawada <sawada.mshk@gmail.com> Reviewed-by: Andrey Borodin <x4mmm@yandex-team.ru> Reviewed-by: Jelte Fennema-Nio <postgres@jeltef.nl> Discussion: https://postgr.es/m/CAJ7c6TOramr1UTLcyB128LWMqita1Y7%3Darq3KHaU%3Dqikf5yKOQ%40mail.gmail.com
156 lines
6 KiB
SQL
156 lines
6 KiB
SQL
-- 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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CREATE TABLE guid3
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(
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id SERIAL,
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guid_field UUID
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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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-- too short
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INSERT INTO guid1(guid_field) VALUES('{11111111-1111-1111-1111-11111111111}');
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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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INSERT INTO guid1(guid_field) VALUES('{22222222-2222-2222-2222-222222222222 ');
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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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INSERT INTO guid1(guid_field) VALUES('11+11111-1111-1111-1111-111111111111');
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-- test non-error-throwing API
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SELECT pg_input_is_valid('11', 'uuid');
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SELECT * FROM pg_input_error_info('11', 'uuid');
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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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-- ordering test
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SELECT guid_field FROM guid1 ORDER BY guid_field ASC;
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SELECT guid_field FROM guid1 ORDER BY guid_field DESC;
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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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-- <> operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field <> '11111111111111111111111111111111';
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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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-- <= operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field <= '22222222-2222-2222-2222-222222222222';
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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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-- >= operator test
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SELECT COUNT(*) FROM guid1 WHERE guid_field >= '22222222-2222-2222-2222-222222222222';
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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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EXPLAIN (COSTS OFF)
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SELECT COUNT(*) FROM guid1 WHERE guid_field <> '11111111111111111111111111111111' OR
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guid_field <> '3f3e3c3b-3a30-3938-3736-353433a2313e';
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EXPLAIN (COSTS OFF)
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SELECT COUNT(*) FROM guid1 WHERE guid_field <= '22222222-2222-2222-2222-222222222222' OR
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guid_field <= '11111111111111111111111111111111' OR
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guid_field <= '3f3e3c3b-3a30-3938-3736-353433a2313e';
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EXPLAIN (COSTS OFF)
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SELECT COUNT(*) FROM guid1 WHERE guid_field = '3f3e3c3b-3a30-3938-3736-353433a2313e' OR
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guid_field = '11111111111111111111111111111111';
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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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-- 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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-- 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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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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-- 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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-- test of uuidv4() alias
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TRUNCATE guid1;
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INSERT INTO guid1 (guid_field) VALUES (uuidv4());
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INSERT INTO guid1 (guid_field) VALUES (uuidv4());
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SELECT count(DISTINCT guid_field) FROM guid1;
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-- generation test for v7
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TRUNCATE guid1;
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INSERT INTO guid1 (guid_field) VALUES (uuidv7());
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INSERT INTO guid1 (guid_field) VALUES (uuidv7());
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INSERT INTO guid1 (guid_field) VALUES (uuidv7(INTERVAL '1 day'));
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SELECT count(DISTINCT guid_field) FROM guid1;
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-- test sortability of v7
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INSERT INTO guid3 (guid_field) SELECT uuidv7() FROM generate_series(1, 10);
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SELECT array_agg(id ORDER BY guid_field) FROM guid3;
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-- Check the timestamp offsets for v7.
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--
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-- generate UUIDv7 values with timestamps ranging from 1970 (the Unix epoch year)
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-- to 10888 (one year before the maximum possible year), and then verify that
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-- the extracted timestamps from these UUIDv7 values have not overflowed.
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WITH uuidts AS (
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SELECT y, ts as ts, lag(ts) OVER (ORDER BY y) AS prev_ts
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FROM (SELECT y, uuid_extract_timestamp(uuidv7((y || ' years')::interval)) AS ts
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FROM generate_series(1970 - extract(year from now())::int, 10888 - extract(year from now())::int) y)
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)
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SELECT y, ts, prev_ts FROM uuidts WHERE ts < prev_ts;
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-- extract functions
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-- version
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SELECT uuid_extract_version('11111111-1111-5111-8111-111111111111'); -- 5
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SELECT uuid_extract_version(gen_random_uuid()); -- 4
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SELECT uuid_extract_version('11111111-1111-1111-1111-111111111111'); -- null
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SELECT uuid_extract_version(uuidv4()); -- 4
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SELECT uuid_extract_version(uuidv7()); -- 7
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-- timestamp
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SELECT uuid_extract_timestamp('C232AB00-9414-11EC-B3C8-9F6BDECED846') = 'Tuesday, February 22, 2022 2:22:22.00 PM GMT+05:00'; -- RFC 9562 test vector for v1
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SELECT uuid_extract_timestamp('017F22E2-79B0-7CC3-98C4-DC0C0C07398F') = 'Tuesday, February 22, 2022 2:22:22.00 PM GMT+05:00'; -- RFC 9562 test vector for v7
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SELECT uuid_extract_timestamp(gen_random_uuid()); -- null
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SELECT uuid_extract_timestamp('11111111-1111-1111-1111-111111111111'); -- null
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-- casts
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SELECT '5b35380a-7143-4912-9b55-f322699c6770'::uuid::bytea;
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SELECT '\x019a2f859ced7225b99d9c55044a2563'::bytea::uuid;
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SELECT '\x1234567890abcdef'::bytea::uuid; -- error
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SELECT v = v::bytea::uuid as matched FROM gen_random_uuid() v;
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-- clean up
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DROP TABLE guid1, guid2, guid3 CASCADE;
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