sql语句自动生成试卷的存储过程.docxVIP

--此存储过程用于自动生成试卷--在试卷索引表中插入一条新记录--把刚插入的记录ID存储在@ID变量中--使用一个游标用来存储根据科目分类的所有试题--随机生成的游标行号对应游标中的一行--用随机生成的游标行号检索游标，并把游标中相应的ID提取出来--最后把数据存入试卷表中CREATE PROCEDURE pr_CreateTest@testTypeIdint,--试题分类号@Memo varchar(50),--试卷说明@testNumberint--要生成的试题数ASbeginbegin transaction--新加startdeclare @totalNumberint--符合要求的题数select @totalNumber=count(id) from Question where TestTypeID=@testTypeID And Del=0if @totalNumber@testNumber--如果符合要求的题数小于要生成的题数，返回beginrollback transactionreturn -1end--新加enddeclare @ID int--用来记录刚插入TestIndex表的ID值insert into TestIndex (TestTypeID,Memo) values(@testTypeID,@Memo)--select @ID=Max(id) from TestIndex--查找刚插入的记录ID号并存在@ID变量中set @ID=@@IDENTITY--刚插入的记录ID号--print @ID=+convert(char(10),@ID)declare testOfProject SCROLL CURSOR--此游标返回根据科目分类的所有试题forselect id from Question where TestTypeID=@testTypeID And Del=0for READ ONLYopentestOfProject--declare @totalNumberint--符合要求的题数--set @totalNumber=@@CURSOR_ROWS--把符合要求题的总数赋给变量@totalNumber/*if @totalNumber@testNumber--如果符合要求的题数小于要生成的题数，返回beginrollback transactionclosetestOfProjectdeallocatetestOfProjectreturn -1end*/create table #rand(number int unique)--此临时表用于存放随机生成的游标行号，相当于数组declare @i int--计数器(用于计数需要生成的试题数量)declare @number int--随机抽取的游标行号declare @count int--使随机生成的游标行号不重复set @i = 1while @i=@testNumberbeginset @number = rand()*@totalNumber+1select @count=count(number) from #rand where number=@numberif @count=0begininsert into #rand values(@number)--print 无重复endelsebeginset @i=@i-1--print 有重复end--print 随机数=+convert(varchar(20),@number)set @i=@i+1end--select number from #rand order by number--加上此行会出现No row count was produced异常，原因待查declare numberOfCursor CURSOR--用此游标中的number值定位上面的游标forselect number from #rand order by numberfor READ ONLYopennumberOfCursordeclare @row int--用来存储testOfProject游标的行号declare @questionIDint--用来存储试题IDfetchnumberOfCursor into @rowwhile @@fetch_status=0beginfetch ABSOLUTE @row from testOfProject into @questionIDif @@fetch_status=0begininsert into Test (TestIndexID,QuestionID) values(@ID,@questionID)if @@ERROR0