今天做OA程序用到sql server存储过程,需要传递数组参数,但是sql server本身不支持数组,于是从网上找了一些资料.
方法一、利用SQL Server强大的字符串处理传把数组格式化为类似"1,2,3,4,5,6"
然后在存储过程中用SubString配合CharIndex把分割开来。
存储过程如下：
1
CREATE PROCEDURE dbo.ProductListUpdateSpecialList
2 @ProductId_Array varChar(800),
3 @ModuleId int
4 AS
5 DECLARE @PointerPrev int
6 DECLARE @PointerCurr int
7 DECLARE @TId int
8 Set @PointerPrev=1
9 set @PointerCurr=1
10
11 begin transaction
12 Set NoCount ON
13 delete from ProductListSpecial where ModuleId=@ModuleId
14
15 Set @PointerCurr=CharIndex (',',@ProductId_Array ,@PointerPrev+1)
16 set @TId=cast (SUBSTRING(@ProductId_Array,@PointerPrev ,@PointerCurr-@PointerPrev) as int)
17 Insert into ProductListSpecial (ModuleId,ProductId) Values(@ModuleId,@TId)
18 SET @PointerPrev = @PointerCurr
19 while (@PointerPrev+1 < LEN(@ProductId_Array))
20 Begin
21 Set @PointerCurr=CharIndex( ',',@ProductId_Array, @PointerPrev+1)
22 if(@PointerCurr> 0)
23 Begin
24 set @TId=cast (SUBSTRING(@ProductId_Array,@PointerPrev +1,@PointerCurr- @PointerPrev-1) as int)
25 Insert into ProductListSpecial (ModuleId,ProductId) Values (@ModuleId,@TId)
26 SET @PointerPrev = @PointerCurr
27 End
28 else
29 Break
30 End
31
32 set @TId=cast( SUBSTRING(@ProductId_Array,@PointerPrev+ 1,LEN(@ProductId_Array )-@PointerPrev) as int)
33 Insert into ProductListSpecial (ModuleId,ProductId) Values (@ModuleId,@TId)
34 Set NoCount OFF
35 if @@error= 0
36 begin
37 commit transaction
38 end
39 else
40 begin
41 rollback transaction
42 end
43GO
44
CREATE PROCEDURE dbo.ProductListUpdateSpecialList2
@ProductId_Array varChar(800),3
@ModuleId int4
AS5
DECLARE @PointerPrev int6
DECLARE @PointerCurr int7
DECLARE @TId int8
Set @PointerPrev=1 9
set @PointerCurr=110
11
begin transaction 12
Set NoCount ON13
delete from ProductListSpecial where ModuleId=@ModuleId 14
15
Set @PointerCurr=CharIndex (',',@ProductId_Array ,@PointerPrev+1)16
set @TId=cast (SUBSTRING(@ProductId_Array,@PointerPrev ,@PointerCurr-@PointerPrev) as int)17
Insert into ProductListSpecial (ModuleId,ProductId) Values(@ModuleId,@TId)18
SET @PointerPrev = @PointerCurr19
while (@PointerPrev+1 < LEN(@ProductId_Array))20
Begin21
Set @PointerCurr=CharIndex( ',',@ProductId_Array, @PointerPrev+1)22
if(@PointerCurr> 0)23
Begin24
set @TId=cast (SUBSTRING(@ProductId_Array,@PointerPrev +1,@PointerCurr- @PointerPrev-1) as int)25
Insert into ProductListSpecial (ModuleId,ProductId) Values (@ModuleId,@TId)26
SET @PointerPrev = @PointerCurr27
End 28
else29
Break30
End 31
32
set @TId=cast( SUBSTRING(@ProductId_Array,@PointerPrev+ 1,LEN(@ProductId_Array )-@PointerPrev) as int)33
Insert into ProductListSpecial (ModuleId,ProductId) Values (@ModuleId,@TId)34
Set NoCount OFF35
if @@error= 036
begin37
commit transaction38
end39
else 40
begin41
rollback transaction42
end43
GO 44
方法二、应该用SQL2000 OpenXML更简单，效率更高，代码更可读。
存储过程如下：
1CREATE Procedure [dbo].[ProductListUpdateSpecialList]
2(
3@ProductId_Array NVARCHAR(2000),
4@ModuleId INT
5)
6
7AS
8
9delete from ProductListSpecial where ModuleId=@ModuleId
10
11-- If empty, return
12IF (@ProductId_Array IS NULL OR LEN(LTRIM(RTRIM(@ProductId_Array))) = 0)
13RETURN
14
15DECLARE @idoc int
16
17EXEC sp_xml_preparedocument @idoc OUTPUT, @ProductId_Array
18
19Insert into ProductListSpecial (ModuleId,ProductId)
20Select
21@ModuleId,C.[ProductId]
22FROM
23OPENXML(@idoc, '/Products/Product', 3)
24with (ProductId int ) as C
25where
26C.[ProductId] is not null
27
28EXEC sp_xml_removedocument @idoc
29
CREATE Procedure [dbo].[ProductListUpdateSpecialList] 2
( 3
@ProductId_Array NVARCHAR(2000), 4
@ModuleId INT 5
) 6
7
AS 8
9
delete from ProductListSpecial where ModuleId=@ModuleId 10
11
-- If empty, return 12
IF (@ProductId_Array IS NULL OR LEN(LTRIM(RTRIM(@ProductId_Array))) = 0) 13
RETURN 14
15
DECLARE @idoc int 16
17
EXEC sp_xml_preparedocument @idoc OUTPUT, @ProductId_Array 18
19
Insert into ProductListSpecial (ModuleId,ProductId) 20
Select 21
@ModuleId,C.[ProductId] 22
FROM 23
OPENXML(@idoc, '/Products/Product', 3) 24
with (ProductId int ) as C 25
where 26
C.[ProductId] is not null 27
28
EXEC sp_xml_removedocument @idoc 29
