sql server 查询表某个字段不重复数据
1 2 3 4 5 6 7 8 9 10 | SELECT TOP (500) ID, Personname, Personcode, Telphone, Fraction into temp3 FROM Records AS a WHERE (LEN(Personcode) = 18 OR LEN(Personcode) = 15) AND ( NOT EXISTS ( SELECT 1 AS Expr1 FROM Records WHERE (Personname = a.Personname) AND (Fraction > a.Fraction) OR (Personname = a.Personname) AND (Fraction = a.Fraction) AND (ID < a.ID))) ORDER BY Fraction DESC |
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