--------------------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