36 lines
1.3 KiB
MySQL
36 lines
1.3 KiB
MySQL
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-- https://dev.mysql.com/doc/refman/8.0/en/set-operations.html
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/* query_expression:
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[with_clause]
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query_expression_body
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[order_by_clause] [limit_clause] [into_clause]
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query_expression_body:
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query_term
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| query_expression_body UNION [ALL | DISTINCT] query_term
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| query_expression_body EXCEPT [ALL | DISTINCT] query_term
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query_term:
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query_primary
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| query_term INTERSECT [ALL | DISTINCT] query_primary
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query_primary:
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query_block
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| '(' query_expression_body [order_by_clause] [limit_clause] [into_clause] ')'*/
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(SELECT a FROM t1 WHERE a=10 AND b=1) EXCEPT (SELECT a FROM t2 WHERE a=11 AND b=2 ORDER BY a LIMIT 10);
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(SELECT * FROM t1 ORDER BY a LIMIT 10) UNION (SELECT * FROM t2 ORDER BY a LIMIT 10);
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(SELECT a FROM t1 WHERE a=10 AND b=1 ORDER BY a LIMIT 10) UNION (SELECT a FROM t2 WHERE a=11 AND b=2 ORDER BY a LIMIT 10);
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(SELECT * FROM t1 ORDER BY x LIMIT 10) INTERSECT (SELECT * FROM t2 ORDER BY a LIMIT 10);
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SELECT * FROM t1 UNION SELECT * FROM t2;
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VALUES ROW(4,-2), ROW(5,9) UNION SELECT * FROM t2;
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VALUES ROW(4,-2), ROW(5,9) UNION SELECT * FROM t2;
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SELECT * FROM t1 UNION VALUES ROW(4,-2),ROW(5,9);
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SELECT * FROM t1 UNION VALUES ROW(4,-2),ROW(5,9);
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VALUES ROW(4,-2), ROW(5,9) UNION VALUES ROW(4,-2),ROW(5,9);
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VALUES ROW(4,-2), ROW(5,9), ROW(-1,3) UNION VALUES ROW(1,2), ROW(3,4), ROW(-1,3) ORDER BY column_0 DESC LIMIT 3;
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