のSELECT
クエリで
SELECT b.id, MIN(IFNULL(a.views,0)) AS counted
FROM table1 a JOIN table2 b ON a.id=b.id GROUP BY id
HAVING counted>0
このクエリをUPDATE
にするにはどうすればよいですか?
UPDATE b.number = counted
UPDATE table2 AS b1, ( SELECT b.id, MIN(IFNULL(a.views, 0)) AS counted
FROM table1 a
JOIN table2 b ON a.id = b.id
GROUP BY id
HAVING counted > 0 ) AS b2
SET b1.number = b2.counted
WHERE b1.id = b2.id
UPDATE table2
INNER JOIN (SELECT MIN(IFNULL(table1.views,0)) counted
FROM table1
GROUP BY table1.id
HAVING counted>0
) x ON x.id = table2.id
SET table2.number = x.counted