SQL Server存储过程 对数组参数的循环处理
2011-11-10 11:27
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方法一 分割
例:通过SQL Server存储过程传送数组参数删除多条记录
eg. ID 值为'1,2,3' 以下存储过程就是删除表中id号为1,2,3的记录:
CREATE PROCEDURE DeleteNews
@ID nvarchar(500)
as
DECLARE @PointerPrev int
DECLARE @PointerCurr int
DECLARE @TId int
Set @PointerPrev=1
while (@PointerPrev < LEN(@ID))
Begin
Set @PointerCurr=CharIndex(',',@ID,@PointerPrev)
if(@PointerCurr>0)
Begin
set @TId=cast(SUBSTRING(@ID,@PointerPrev,@PointerCurr-@PointerPrev) as int)
Delete from News where ID=@TID
SET @PointerPrev = @PointerCurr+1
End
else
Break
End
--删除最后一个,因为最后一个后面没有逗号,所以在循环中跳出,需另外再删除
set @TId=cast(SUBSTRING(@ID,@PointerPrev,LEN(@ID)-@PointerPrev+1) as int)
Delete from News where ID=@TID
GO
方法二 Table对象
传3个参数,都是数组形式还有时间类型用存储过程更新
@Oid = 1,2,3,4
@Did = 111,222,333,444
@DateArr = '2007-1-1,2007-1-2,2007-1-3,2007-1-4'
CREATE proc Test999
@Oid nvarchar(1000) --ID1
,@Did nvarchar(1000) --ID2
,@DateArr nvarchar(1000) --日期
AS
DECLARE @id1s varchar(8000), @id2s varchar(8000), @dates varchar(8000)
set @id1s=@Oid
set @id2s=@Did
set @dates = @DateArr
-- 调用函数实现处理
SELECT @id1s=@id1s, @id2s=@id2s,@dates = @dates
UPDATE A SET terminate_time = B.dt
FROMA,(
例:通过SQL Server存储过程传送数组参数删除多条记录
eg. ID 值为'1,2,3' 以下存储过程就是删除表中id号为1,2,3的记录:
CREATE PROCEDURE DeleteNews
@ID nvarchar(500)
as
DECLARE @PointerPrev int
DECLARE @PointerCurr int
DECLARE @TId int
Set @PointerPrev=1
while (@PointerPrev < LEN(@ID))
Begin
Set @PointerCurr=CharIndex(',',@ID,@PointerPrev)
if(@PointerCurr>0)
Begin
set @TId=cast(SUBSTRING(@ID,@PointerPrev,@PointerCurr-@PointerPrev) as int)
Delete from News where ID=@TID
SET @PointerPrev = @PointerCurr+1
End
else
Break
End
--删除最后一个,因为最后一个后面没有逗号,所以在循环中跳出,需另外再删除
set @TId=cast(SUBSTRING(@ID,@PointerPrev,LEN(@ID)-@PointerPrev+1) as int)
Delete from News where ID=@TID
GO
方法二 Table对象
传3个参数,都是数组形式还有时间类型用存储过程更新
@Oid = 1,2,3,4
@Did = 111,222,333,444
@DateArr = '2007-1-1,2007-1-2,2007-1-3,2007-1-4'
CREATE proc Test999
@Oid nvarchar(1000) --ID1
,@Did nvarchar(1000) --ID2
,@DateArr nvarchar(1000) --日期
AS
DECLARE @id1s varchar(8000), @id2s varchar(8000), @dates varchar(8000)
set @id1s=@Oid
set @id2s=@Did
set @dates = @DateArr
-- 调用函数实现处理
SELECT @id1s=@id1s, @id2s=@id2s,@dates = @dates
UPDATE A SET terminate_time = B.dt
FROM