29 lines
525 B
MySQL
29 lines
525 B
MySQL
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SELECT a, b
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FROM (
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SELECT a, MAX(b) AS b FROM t GROUP BY a
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) AS x;
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WITH x AS (SELECT a, MAX(b) AS b FROM t GROUP BY a)
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SELECT a, b FROM x;
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WITH
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t1 AS (SELECT a, MAX(b) AS b FROM x GROUP BY a),
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t2 AS (SELECT a, AVG(d) AS d FROM y GROUP BY a)
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SELECT t1.*, t2.*
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FROM t1
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JOIN t2 ON t1.a = t2.a;
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WITH
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x AS (SELECT a FROM t),
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y AS (SELECT a AS b FROM x),
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z AS (SELECT b AS c FROM y)
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SELECT c FROM z;
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WITH RECURSIVE t(n) AS (
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VALUES (1)
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UNION ALL
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SELECT n + 1 FROM t WHERE n < 4
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)
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SELECT sum(n) FROM t;
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