sql count(1)不要和查询数据混用 非常耗时

it2022-06-23  80

count(1)不要和查询数据混用 非常耗时

例子:

SELECT w.[PKID], COUNT(1) OVER() AS TotalCount FROM w WITH(NOLOCK) INNER JOIN s WITH(NOLOCK) ON s.PKID= w.SID INNER JOIN s2 WITH (NOLOCK) ON s2.PKID= w.SID2 INNER JOIN w2 AS WTLWITH(NOLOCK) ON W2.WID=w.PKID ORDER BY w.PKID OFFSET 0 ROW FETCH NEXT 15 ROW ONLY

转载于:https://www.cnblogs.com/Lulus/p/7905338.html


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