<div class="codebody" id="code57406"> --建一个表 CREATE TABLE MyData ( ids INT IDENTITY PRIMARY KEY, Data NVARCHAR(1000) ) go --插入测试数据 INSERT INTO MyData VALUES('') INSERT INTO MyData VALUES('a,b,c') INSERT INTO MyData VALUES('q') INSERT INTO MyData VALUES('i,p') GO select from MyData go --查询结果 ids Data 1 2 a,c 3 q 4 i,p
<div class="codebody" id="code49120"> create FUNCTION fun_MyData( @data AS NVARCHAR(1000) ) RETURNS @tem TABLE( id INT,value nvarchar(100) ) AS BEGIN select @data=isnull(@data,'') if len(@data)=0 return --字符长度为0 ，退出 declare @id AS INT select @id=1 declare @end AS INT select @end = CHARINDEX(',',@data) while(@end>0) begin insert into @tem(id,value) select @id,left(@data,@end-1) select @id=@id+1 select @data=right(@data,len(@data)-@end) select @end = CHARINDEX(',@data) end if len(@data)>0 begin insert into @tem(id,@data end RETURN END
<div class="codebody" id="code27094"> SELECT m.ids,f. FROM MyData m CROSS APPLY fun_MyData(data) f go --结果 ids id value 2 1 a 2 2 b 2 3 c 3 1 q 4 1 i 4 2 p SELECT m.ids,f. FROM MyData m OUTER APPLY fun_MyData(data) f go --结果 ids id value 1 NULL NULL 2 1 a 2 2 b 2 3 c 3 1 q 4 1 i 4 2 p
<div class="codebody" id="code66614"> --sql2000版本 declare @ids int select @ids =0 declare @data nvarchar(200) select @data='' --定义表变量临时存放数据 declare @tem table( ids int, id int, value nvarchar(100) ) DECLARE test_cursor CURSOR FOR SELECT ids,Data FROM MyData OPEN test_cursor FETCH NEXT FROM test_cursor INTO @ids,@data WHILE @@FETCH_STATUS = 0 begin insert into @tem select @ids,id,value from dbo.fun_MyData(@data) FETCH NEXT FROM test_cursor INTO @ids,@data end CLOSE test_cursor DEALLOCATE test_cursor select from @tem
