【sql server 2000学习笔记2】dts，批，脚本，局部变量，全局变量，流程控制语言，存储控制

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1
使用dts导入导出数据
2
批，脚本，局部变量，全局变量，流程控制语言（waitfor，case）
3存储过程
导出sql2000各表数据脚本的存储过程
CREATE PROCEDURE dbo.UspOutputData @tablename sysname AS declare @column varchar(1000) declare @columndata varchar(1000) declare @sql varchar(4000) declare @xtype tinyint declare @name sysname declare @objectId int declare @objectname sysname declare @ident int set nocount on set @objectId=object_id(@tablename) if @objectId is null -- 判断对象是否存在 begin print 'The object not exists' return end set @objectname=rtrim(object_name(@objectId)) if @objectname is null or charindex(@objectname,@tablename)=0 --此判断不严密 begin print 'object not in current database' return end if OBJECTPROPERTY(@objectId,'IsTable') < > 1 -- 判断对象是否是table begin print 'The object is not table' return end select @ident=status&0x80 from syscolumns where id=@objectid and status&0x80=0x80 if @ident is not null print 'SET IDENTITY_INSERT '+@TableName+' ON' declare syscolumns_cursor cursorfor select c.name,c.xtype from syscolumns c where c.id=@objectid order by c.colid open syscolumns_cursor set @column='' set @columndata='' fetch next from syscolumns_cursor into @name,@xtype while @@fetch_status < >-1 begin if @@fetch_status < >-2 begin if @xtype not in(189,34,35,99,98) --timestamp不需处理，image,text,ntext,sql_variant 暂时不处理 begin set @column=@column+case when len(@column)=0 then'' else ','end+@name set @columndata=@columndata+case when len(@columndata)=0 then '' else ','','','end +case when @xtype in(167,175) then '''''''''+'+@name+'+''''''''' --varchar,char when @xtype in(231,239) then '''N''''''+'+@name+'+''''''''' --nvarchar,nchar when @xtype=61 then '''''''''+convert(char(23),'+@name+',121)+''''''''' --datetime when @xtype=58 then '''''''''+convert(char(16),'+@name+',120)+''''''''' --smalldatetime when @xtype=36 then '''''''''+convert(char(36),'+@name+')+''''''''' --uniqueidentifier else @name end end end fetch next from syscolumns_cursor into @name,@xtype end close syscolumns_cursor deallocate syscolumns_cursor set @sql='set nocount on select ''insert '+@tablename+'('+@column+') values(''as ''--'','+@columndata+','')'' from '+@tablename print '--'+@sql exec(@sql) if @ident is not null print 'SET IDENTITY_INSERT '+@TableName+' OFF' GO使用方法：exec UspOutputData 你的表名

本次实验用到的语句
select *from studentdeclare @student_name varchar(20);--如果没有在数据定义或变量声明语句中指定 n，则默认长度为 1。set @student_name = '李勇';select *from student where student.sname = @student_nameselect @@rowcountselect @@errorprint @@versionselect @@versiondeclare @x int, @s int;set @s = 0;set @x = 1;while(@x<=100) beginset @s = @s+@xset @x = @x + 1;endprint 's = '+ convert(char(4), @s)waitfor delay '00:00:05'select *from gradeuse GradeManagergoselect student.sno as '学号', student.sname as '姓名' , grade.cno  as '课程号' , course.cname as '课程名',casewhen grade.gmark>= 90 then '优秀'when grade.gmark>= 80 then '良好'when grade.gmark>= 70 then '中等'when grade.gmark>= 60 then '及格'else '不及格'end as '成绩'from student, grade, coursewhere student.sno = grade.sno and grade.cno = course.cno