mirror of https://github.com/citusdata/citus.git
96 lines
1.9 KiB
SQL
96 lines
1.9 KiB
SQL
--
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-- MULTI_LARGE_TABLE_PRUNING
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--
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-- Tests covering partition and join-pruning for large table joins. Note that we
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-- set executor type to task tracker executor here, as we cannot run repartition
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-- jobs with real time executor.
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ALTER SEQUENCE pg_catalog.pg_dist_shardid_seq RESTART 700000;
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ALTER SEQUENCE pg_catalog.pg_dist_jobid_seq RESTART 700000;
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SET citus.large_table_shard_count TO 2;
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SET client_min_messages TO DEBUG2;
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SET citus.task_executor_type TO 'task-tracker';
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-- Single range-repartition join to test join-pruning behaviour.
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SELECT
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count(*)
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FROM
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orders, customer
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WHERE
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o_custkey = c_custkey;
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-- Single range-repartition join with a selection clause on the partitioned
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-- table to test the case when all map tasks are pruned away.
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SELECT
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count(*)
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FROM
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orders, customer
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WHERE
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o_custkey = c_custkey AND
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o_orderkey < 0;
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-- Single range-repartition join with a selection clause on the base table to
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-- test the case when all sql tasks are pruned away.
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SELECT
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count(*)
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FROM
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orders, customer
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WHERE
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o_custkey = c_custkey AND
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c_custkey < 0;
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-- Dual hash-repartition join test case. Note that this query doesn't produce
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-- meaningful results and is only to test hash-partitioning of two large tables
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-- on non-partition columns.
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SELECT
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count(*)
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FROM
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lineitem, customer
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WHERE
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l_partkey = c_nationkey;
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-- Dual hash-repartition join with a selection clause on one of the tables to
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-- test the case when all map tasks are pruned away.
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SELECT
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count(*)
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FROM
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lineitem, customer
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WHERE
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l_partkey = c_nationkey AND
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l_orderkey < 0;
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-- Test cases with false in the WHERE clause
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SELECT
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o_orderkey
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FROM
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orders INNER JOIN customer ON (o_custkey = c_custkey)
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WHERE
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false;
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SELECT
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o_orderkey
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FROM
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orders INNER JOIN customer ON (o_custkey = c_custkey)
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WHERE
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1=0 AND c_custkey < 0;
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SELECT
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o_orderkey
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FROM
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orders INNER JOIN customer ON (o_custkey = c_custkey AND false);
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SELECT
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o_orderkey
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FROM
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orders, customer
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WHERE
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o_custkey = c_custkey AND false;
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