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pg sharding works

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This commit is contained in:
Lev Kokotov
2022-02-08 11:10:28 -08:00
parent 27c05cfd53
commit 39a9dff26b
2 changed files with 72 additions and 17 deletions
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26
tests/sharding/setup.sql Normal file
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DROP TABLE IF EXISTS shards CASCADE;
CREATE TABLE shards (
id BIGINT,
value VARCHAR
) PARTITION BY HASH (id);
-- DROP TABLE IF EXISTS shard_0;
CREATE TABLE shard_0 PARTITION OF shards FOR VALUES WITH (MODULUS 5, REMAINDER 0);
-- DROP TABLE IF EXISTS shard_1;
CREATE TABLE shard_1 PARTITION OF shards FOR VALUES WITH (MODULUS 5, REMAINDER 1);
-- DROP TABLE IF EXISTS shard_2;
CREATE TABLE shard_2 PARTITION OF shards FOR VALUES WITH (MODULUS 5, REMAINDER 2);
-- DROP TABLE IF EXISTS shard_3;
CREATE TABLE shard_3 PARTITION OF shards FOR VALUES WITH (MODULUS 5, REMAINDER 3);
-- DROP TABLE IF EXISTS shard_4;
CREATE TABLE shard_4 PARTITION OF shards FOR VALUES WITH (MODULUS 5, REMAINDER 4);
INSERT INTO shards SELECT generate_series(1, 500), 'value';
SELECT * FROM shard_0 ORDER BY id LIMIT 10;
SELECT * FROM shard_1 ORDER BY id LIMIT 10;
SELECT * FROM shard_2 ORDER BY id LIMIT 10;
SELECT * FROM shard_3 ORDER BY id LIMIT 10;
SELECT * FROM shard_4 ORDER BY id LIMIT 10;