sql server 游标使用

--------------------利用游标对查询的数据集进行遍历----------------------- DECLARE @gcode VARCHAR(10) ,@name VARCHAR(50),@price CHAR(10) DECLARE sel CURSOR SCROLL FOR SELECT c_gcode,c_name,c_price FROM tb_gds WHERE c_gcode IN ('000001','000002','000003') ORDER BY c_gcode;

OPEN sel

FETCH NEXT FROM sel INTO @gcode,@name,@price WHILE @@FETCH_STATUS=0 BEGIN PRINT '商品编码:'+@gcode PRINT '商品名称:'+@name PRINT '商品价格:'+@price PRINT '................'

FETCH NEXT FROM sel INTO @gcode,@name,@price END

CLOSE sel

DEALLOCATE sel

-------------------利用游标修改、删除数据-------------------------- BEGIN TRAN

DECLARE update_gdsstore CURSOR SCROLL FOR SELECT c_gcode,c_price,c_store_id FROM dbo.tb_gdsstore WHERE c_gcode IN ('000001','000002','000003') FOR UPDATE OF c_price

OPEN update_gdsstore DECLARE @ROWCOUNT INT SET @rowcount=1 FETCH ABSOLUTE @rowcount FROM update_gdsstore UPDATE dbo.tb_gdsstore SET c_price='12' WHERE CURRENT OF update_gdsstore

SET @ROWCOUNT=@ROWCOUNT+1

FETCH NEXT FROM update_gdsstore UPDATE dbo.tb_gdsstore SET c_price='11' WHERE CURRENT OF update_gdsstore

SET @ROWCOUNT=@ROWCOUNT+1

FETCH NEXT FROM update_gdsstore UPDATE dbo.tb_gdsstore SET c_price='10' WHERE CURRENT OF update_gdsstore

CLOSE update_gdsstore

DEALLOCATE update_gdsstore

ROLLBACK

-----------------------------利用游标对查询的数据集进行遍历-------------------------------

DECLARE @ggcode VARCHAR(10),@gname VARCHAR(50),@produce VARCHAR(30) DECLARE get_info CURSOR SCROLL FOR SELECT c_gcode,c_name,c_produce FROM tb_gds WHERE c_adno='201' ORDER BY c_gcode;

OPEN get_info

FETCH NEXT FROM get_info INTO @ggcode,@gname,@produce WHILE @@FETCH_STATUS=0 BEGIN PRINT '商品编码:'+@ggcode PRINT '商品名称:'+@gname PRINT '商品产地:'+@produce PRINT '................'

FETCH NEXT FROM get_info INTO @ggcode,@gname,@produce END

CLOSE get_info

DEALLOCATE get_info