mirror of
https://github.com/ClickHouse/ClickHouse.git
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91 lines
4.6 KiB
SQL
91 lines
4.6 KiB
SQL
SET enable_optimize_predicate_expression = 0;
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select * from system.one l cross join system.one r;
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DROP TABLE IF EXISTS t1_00826;
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DROP TABLE IF EXISTS t2_00826;
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CREATE TABLE t1_00826 (a Int8, b Nullable(Int8)) ENGINE = Memory;
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CREATE TABLE t2_00826 (a Int8, b Nullable(Int8)) ENGINE = Memory;
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INSERT INTO t1_00826 values (1,1), (2,2);
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INSERT INTO t2_00826 values (1,1), (1,2);
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INSERT INTO t2_00826 (a) values (2), (3);
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SELECT '--- cross ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a;
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SELECT '--- cross nullable ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.b = t2_00826.b;
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SELECT '--- cross nullable vs not nullable ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.b;
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SELECT '--- cross self ---';
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SELECT * FROM t1_00826 x cross join t1_00826 y where x.a = y.a and x.b = y.b;
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SELECT '--- cross one table expr ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t1_00826.b order by (t1_00826.a, t2_00826.a, t2_00826.b);
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SELECT '--- cross multiple ands ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and t1_00826.b = t2_00826.b;
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SELECT '--- cross and inside and ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and (t1_00826.b = t2_00826.b and 1);
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SELECT '--- cross split conjunction ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and t1_00826.b = t2_00826.b and t1_00826.a >= 1 and t2_00826.b = 1;
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SELECT '--- and or ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and t1_00826.b = t2_00826.b and (t1_00826.a >= 1 OR t2_00826.b = 1);
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SELECT '--- arithmetic expr ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a + 1 = t2_00826.a + t2_00826.b AND (t1_00826.a + t1_00826.b + t2_00826.a + t2_00826.b > 5);
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SELECT '--- is null or ---';
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SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.b = t2_00826.a AND (t2_00826.b IS NULL OR t2_00826.b > t2_00826.a);
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SELECT '--- do not rewrite alias ---';
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SELECT a as b FROM t1_00826 cross join t2_00826 where t1_00826.b = t2_00826.a AND b > 0;
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SELECT '--- comma ---';
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SELECT * FROM t1_00826, t2_00826 where t1_00826.a = t2_00826.a;
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SELECT '--- comma nullable ---';
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SELECT * FROM t1_00826, t2_00826 where t1_00826.b = t2_00826.b;
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SELECT '--- comma and or ---';
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SELECT * FROM t1_00826, t2_00826 where t1_00826.a = t2_00826.a AND (t2_00826.b IS NULL OR t2_00826.b < 2);
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SELECT '--- cross ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a;
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SELECT '--- cross nullable ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826, t2_00826 where t1_00826.a = t2_00826.a;
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SELECT '--- cross nullable vs not nullable ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.b;
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SELECT '--- cross self ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 x cross join t1_00826 y where x.a = y.a and x.b = y.b;
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SELECT '--- cross one table expr ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t1_00826.b;
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SELECT '--- cross multiple ands ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and t1_00826.b = t2_00826.b;
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SELECT '--- cross and inside and ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and (t1_00826.a = t2_00826.a and (t1_00826.a = t2_00826.a and t1_00826.b = t2_00826.b));
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SELECT '--- cross split conjunction ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and t1_00826.b = t2_00826.b and t1_00826.a >= 1 and t2_00826.b > 0;
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SELECT '--- and or ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a = t2_00826.a and t1_00826.b = t2_00826.b and (t1_00826.a >= 1 OR t2_00826.b = 1);
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SELECT '--- arithmetic expr ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.a + 1 = t2_00826.a + t2_00826.b AND (t1_00826.a + t1_00826.b + t2_00826.a + t2_00826.b > 5);
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SELECT '--- is null or ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826 cross join t2_00826 where t1_00826.b = t2_00826.a AND (t2_00826.b IS NULL OR t2_00826.b > t2_00826.a);
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SELECT '--- do not rewrite alias ---';
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EXPLAIN SYNTAX SELECT a as b FROM t1_00826 cross join t2_00826 where t1_00826.b = t2_00826.a AND b > 0;
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SELECT '--- comma ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826, t2_00826 where t1_00826.a = t2_00826.a;
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SELECT '--- comma nullable ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826, t2_00826 where t1_00826.b = t2_00826.b;
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SELECT '--- comma and or ---';
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EXPLAIN SYNTAX SELECT * FROM t1_00826, t2_00826 where t1_00826.a = t2_00826.a AND (t2_00826.b IS NULL OR t2_00826.b < 2);
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DROP TABLE t1_00826;
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DROP TABLE t2_00826;
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