51 lines
1.5 KiB
MySQL
51 lines
1.5 KiB
MySQL
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-- https://dev.mysql.com/doc/refman/8.0/en/parenthesized-query-expressions.html
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/* parenthesized_query_expression:
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( query_expression [order_by_clause] [limit_clause] )
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[order_by_clause]
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[limit_clause]
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[into_clause]
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query_expression:
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query_block [set_op query_block [set_op query_block ...]]
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[order_by_clause]
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[limit_clause]
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[into_clause]
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query_block:
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SELECT ... | TABLE | VALUES
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order_by_clause:
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ORDER BY as for SELECT
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limit_clause:
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LIMIT as for SELECT
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into_clause:
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INTO as for SELECT
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set_op:
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UNION | INTERSECT | EXCEPT */
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(SELECT 1 AS result UNION SELECT 2);
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(SELECT 1 AS result UNION SELECT 2) LIMIT 1;
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(SELECT 1 AS result UNION SELECT 2) LIMIT 1 OFFSET 1;
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(SELECT 1 AS result UNION SELECT 2) ORDER BY result DESC LIMIT 1;
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(SELECT 1 AS result UNION SELECT 2) ORDER BY result DESC LIMIT 1 OFFSET 1;
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(SELECT 1 AS result UNION SELECT 3 UNION SELECT 2) ORDER BY result LIMIT 1 OFFSET 1 INTO @var;
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SELECT @var;
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SELECT a FROM t1 EXCEPT SELECT b FROM t2 INTERSECT SELECT c FROM t3;
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SELECT a FROM t1 EXCEPT (SELECT b FROM t2 INTERSECT SELECT c FROM t3);
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(SELECT * FROM t1 ORDER BY a) UNION (SELECT * FROM t2 ORDER BY b) ORDER BY z;
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(SELECT 1 LIMIT 1) UNION (VALUES ROW(2) LIMIT 1);
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(VALUES ROW(1), ROW(2) LIMIT 2) EXCEPT (SELECT 2 LIMIT 1);
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VALUES ROW(1), ROW(2) INTERSECT VALUES ROW(2), ROW(1) LIMIT 1;
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(SELECT 1 LIMIT 1) UNION (SELECT 2 LIMIT 1) LIMIT 1;
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(SELECT 1 LIMIT 1) UNION (SELECT 2) LIMIT 1;
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(SELECT 'a' UNION SELECT 'b' LIMIT 2) LIMIT 3;
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