/*函數(shù)名稱：f_SplitToNvarchar作用：實現(xiàn)split功能的函數(shù)更新記錄：設(shè)計思路：將nvarchar類型字符結(jié)合的一個串，分隔到一張只有一列nvarchar類型的表里*/CREATE FUNCTION [dbo].[f_SplitToNvarchar](@SourceSql  NVARCHAR(MAX),--源分隔字符串@StrSeprate VARCHAR(10)--分隔符)RETURNS @temp TABLE(col NVARCHAR(MAX))ASBEGINDECLARE @i INTSET @SourceSql = RTRIM(LTRIM(@SourceSql))SET @i = CHARINDEX(@StrSeprate, @SourceSql)WHILE @i >= 1BEGIN  INSERT @temp  VALUES   (    LEFT(@SourceSql, @i -1)   )  SET @SourceSql = SUBSTRING(@SourceSql, @i + 1, LEN(@SourceSql) -@i)  SET @i = CHARINDEX(@StrSeprate, @SourceSql)ENDIF @SourceSql <> '/'  INSERT @temp  VALUES   (    @SourceSql   )RETURNENDGO

SELECT col FROM f_SplitToNvarchar('1,2,3,4',',');