mirror of https://github.com/citusdata/citus.git
53 lines
2.0 KiB
Plaintext
53 lines
2.0 KiB
Plaintext
--
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-- NON_COLOCATED_JOIN_ORDER
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--
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-- Tests to check placements of shards must be equal to choose local join logic.
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CREATE TABLE test_table_1(id int, value_1 int);
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SELECT master_create_distributed_table('test_table_1', 'id', 'append');
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master_create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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\copy test_table_1 FROM STDIN DELIMITER ','
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\copy test_table_1 FROM STDIN DELIMITER ','
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CREATE TABLE test_table_2(id int, value_1 int);
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SELECT master_create_distributed_table('test_table_2', 'id', 'append');
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master_create_distributed_table
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---------------------------------------------------------------------
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(1 row)
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\copy test_table_2 FROM STDIN DELIMITER ','
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\copy test_table_2 FROM STDIN DELIMITER ','
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SET citus.log_multi_join_order to TRUE;
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SET client_min_messages to DEBUG1;
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-- Since we both have same amount of shards and they are colocated on the same node
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-- local join logic will be triggered.
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SELECT count(*) FROM test_table_1, test_table_2 WHERE test_table_1.id = test_table_2.id;
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LOG: join order: [ "test_table_1" ][ local partition join "test_table_2" ]
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count
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---------------------------------------------------------------------
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6
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(1 row)
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-- Add two shards placement of interval [8,10] to test_table_1
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SET citus.shard_replication_factor to 2;
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\copy test_table_1 FROM STDIN DELIMITER ','
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-- Add two shards placement of interval [8,10] to test_table_2
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SET citus.shard_replication_factor to 1;
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\copy test_table_2 FROM STDIN DELIMITER ','
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-- Although shard interval of relation are same, since they have different amount of placements
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-- for interval [8,10] repartition join logic will be triggered.
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SET citus.enable_repartition_joins to ON;
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SELECT count(*) FROM test_table_1, test_table_2 WHERE test_table_1.id = test_table_2.id;
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LOG: join order: [ "test_table_1" ][ single range partition join "test_table_2" ]
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count
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---------------------------------------------------------------------
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9
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(1 row)
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SET client_min_messages TO default;
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DROP TABLE test_table_1;
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DROP TABLE test_table_2;
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