使用SQL中的函数，也可以根据更新表的某些字段还要进行计算，接下来的SQL server内容就将为您介绍这种使用SQL中的函数替代游标的方法，供您参考，希望对您有所帮助。
CREATE FUNCTION [DBO].[FUN_RATE] (@PARTID INT,@ENID INT,@SOURCEID INT, @QUALITYID INT,@COUNT INT) RETURNS FLOAT AS BEGIN DECLARE @QXS FLOAT, @G FLOAT, @RATE FLOAT IF (@ENID=NULL) OR (@PARTID=NULL) OR (@SOURCEID=NULL) OR (@QUALITYID=NULL) BEGIN RETURN(0.0) END SELECT @QXS= ISNULL(XS,0) FROM TABLEQUALITY WHERE ID=@QUALITYID SELECT @G=ISNULL(FRATE_G,0) FROM TABLEFAILURERATE WHERE (SUBKINDID=@PARTID) AND( ENID=@ENID) AND ( DATASOURCEID=@SOURCEID) AND( ( (ISNULL(MINCOUNT,0)<=ISNULL(@COUNT,0)) AND ( ISNULL(MAXCOUNT,0)>=ISNULL(@COUNT,0))) OR(ISNULL(@COUNT,0)>ISNULL(MAXCOUNT,0))) SET @RATE=ISNULL(@QXS*@G,0) RETURN (@RATE) END 调用函数的存储过程部分： CREATE PROC PROC_FAULTRATE @PARTID INTEGER, @QUALITYID INTEGER, @SOURCEID INTEGER, @COUNT INTEGER, @ROID INT, @GRADE INT,@RATE FLOAT=0 OUTPUTAS BEGIN DECLARE @TASKID INT SET @RATE=0.0 SELECT @TASKID=ISNULL(TASKPROID,-1) FROM TABLERELATION WHERE ID=(SELECT PID FROM TABLERELATION WHERE ID=@ROID) IF (@TASKID=-1) OR(@GRADE=1) BEGIN SET @RATE=0 RETURN END SELECT @RATE=SUM([DBO].[FUN_RATE] (@PARTID,ENID,@SOURCEID, @QUALITYID,@COUNT) *ISNULL(WORKPERCENT,0)/100.0) FROM TABLETASKPHASE WHERE TASKID=@TASKID END GO