mirror of
https://github.com/ClickHouse/ClickHouse.git
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68 lines
3.1 KiB
SQL
68 lines
3.1 KiB
SQL
SET enable_optimize_predicate_expression = 0;
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DROP TABLE IF EXISTS t1;
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DROP TABLE IF EXISTS t2;
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DROP TABLE IF EXISTS t3;
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DROP TABLE IF EXISTS t4;
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CREATE TABLE t1 (a UInt32, b Nullable(Int32)) ENGINE = Memory;
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CREATE TABLE t2 (a UInt32, b Nullable(Int32)) ENGINE = Memory;
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CREATE TABLE t3 (a UInt32, b Nullable(Int32)) ENGINE = Memory;
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CREATE TABLE t4 (a UInt32, b Nullable(Int32)) ENGINE = Memory;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2 WHERE t1.a = t2.a;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2 WHERE t1.b = t2.b;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3 WHERE t1.a = t2.a AND t1.a = t3.a;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3 WHERE t1.b = t2.b AND t1.b = t3.b;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3, t4 WHERE t1.a = t2.a AND t1.a = t3.a AND t1.a = t4.a;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3, t4 WHERE t1.b = t2.b AND t1.b = t3.b AND t1.b = t4.b;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3, t4 WHERE t2.a = t1.a AND t2.a = t3.a AND t2.a = t4.a;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3, t4 WHERE t3.a = t1.a AND t3.a = t2.a AND t3.a = t4.a;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3, t4 WHERE t4.a = t1.a AND t4.a = t2.a AND t4.a = t3.a;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3, t4 WHERE t1.a = t2.a AND t2.a = t3.a AND t3.a = t4.a;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2, t3, t4;
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EXPLAIN SYNTAX SELECT t1.a FROM t1 CROSS JOIN t2 CROSS JOIN t3 CROSS JOIN t4;
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EXPLAIN SYNTAX SELECT t1.a FROM t1, t2 CROSS JOIN t3;
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EXPLAIN SYNTAX SELECT t1.a FROM t1 JOIN t2 USING a CROSS JOIN t3;
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EXPLAIN SYNTAX SELECT t1.a FROM t1 JOIN t2 ON t1.a = t2.a CROSS JOIN t3;
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INSERT INTO t1 values (1,1), (2,2), (3,3), (4,4);
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INSERT INTO t2 values (1,1), (1, Null);
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INSERT INTO t3 values (1,1), (1, Null);
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INSERT INTO t4 values (1,1), (1, Null);
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SELECT 'SELECT * FROM t1, t2';
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SELECT * FROM t1, t2
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ORDER BY t1.a, t2.b;
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SELECT 'SELECT * FROM t1, t2 WHERE t1.a = t2.a';
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SELECT * FROM t1, t2 WHERE t1.a = t2.a
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ORDER BY t1.a, t2.b;
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SELECT 'SELECT t1.a, t2.a FROM t1, t2 WHERE t1.b = t2.b';
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SELECT t1.a, t2.b FROM t1, t2 WHERE t1.b = t2.b;
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SELECT 'SELECT t1.a, t2.b, t3.b FROM t1, t2, t3 WHERE t1.a = t2.a AND t1.a = t3.a';
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SELECT t1.a, t2.b, t3.b FROM t1, t2, t3
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WHERE t1.a = t2.a AND t1.a = t3.a
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ORDER BY t2.b, t3.b;
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SELECT 'SELECT t1.a, t2.b, t3.b FROM t1, t2, t3 WHERE t1.b = t2.b AND t1.b = t3.b';
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SELECT t1.a, t2.b, t3.b FROM t1, t2, t3 WHERE t1.b = t2.b AND t1.b = t3.b;
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SELECT 'SELECT t1.a, t2.b, t3.b, t4.b FROM t1, t2, t3, t4 WHERE t1.a = t2.a AND t1.a = t3.a AND t1.a = t4.a';
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SELECT t1.a, t2.b, t3.b, t4.b FROM t1, t2, t3, t4
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WHERE t1.a = t2.a AND t1.a = t3.a AND t1.a = t4.a
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ORDER BY t2.b, t3.b, t4.b;
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SELECT 'SELECT t1.a, t2.b, t3.b, t4.b FROM t1, t2, t3, t4 WHERE t1.b = t2.b AND t1.b = t3.b AND t1.b = t4.b';
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SELECT t1.a, t2.b, t3.b, t4.b FROM t1, t2, t3, t4
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WHERE t1.b = t2.b AND t1.b = t3.b AND t1.b = t4.b;
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SELECT 'SELECT t1.a, t2.b, t3.b, t4.b FROM t1, t2, t3, t4 WHERE t1.a = t2.a AND t2.a = t3.a AND t3.a = t4.a';
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SELECT t1.a, t2.b, t3.b, t4.b FROM t1, t2, t3, t4
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WHERE t1.a = t2.a AND t2.a = t3.a AND t3.a = t4.a
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ORDER BY t2.b, t3.b, t4.b;
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DROP TABLE t1;
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DROP TABLE t2;
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DROP TABLE t3;
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DROP TABLE t4;
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