问：“怎样同时插入N条数据,却不在程序里控制？” 答：“由于SQL Sever不支持数组参数.所以只能用另类的办法了.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。 详细的存储过程: CREATE PROCEDURE dbo.ProductListUpdateSpecialList @ProductId_Array varChar(800), @ModuleId int AS DECLARE @PointerPrev int DECLARE @PointerCurr int DECLARE @TId int Set @PointerPrev=1 set @PointerCurr=1 begin transaction Set NoCount ON delete from ProductListSpecial where ModuleId=@ModuleId Set @PointerCurr=CharIndex ',',@ProductId_Array,@PointerPrev+1) set @TId=cast(SUBSTRING(@ProductId_Array,@PointerPrev, @PointerCurr-@PointerPrev) as int) Insert into ProductListSpecial (ModuleId,ProductId) Values(@ModuleId,@TId) SET @PointerPrev = @PointerCurr while (@PointerPrev+1 < LEN(@ProductId_Array)) Begin Set @PointerCurr=CharIndex (',',@ProductId_Array,@PointerPrev+1) if(@PointerCurr>0) Begin set @TId=cast(SUBSTRING (@ProductId_Array,@PointerPrev+1, @PointerCurr-@PointerPrev-1) as int) Insert into ProductListSpecial (ModuleId,ProductId) Values(@ModuleId,@TId) SET @PointerPrev = @PointerCurr End else Break End set @TId=cast(SUBSTRING (@ProductId_Array,@PointerPrev+1, LEN(@ProductId_Array)-@PointerPrev) as int) Insert into ProductListSpecial (ModuleId,ProductId) Values(@ModuleId,@TId) Set NoCount OFF if @@error=0 begin commit transaction end else begin rollback transaction end GO |
改进方法: 应该用SQL2000 OpenXML更简单，效率更高，代码更可读： CREATE Procedure [dbo].[ProductListUpdateSpecialList] ( @ProductId_Array NVARCHAR(2000), @ModuleId INT ) AS delete from ProductListSpecial where ModuleId=@ModuleId -- If empty, return IF (@ProductId_Array IS NULL OR LEN(LTRIM (RTRIM(@ProductId_Array))) = 0) RETURN DECLARE @idoc int EXEC sp_xml_preparedocument @idoc OUTPUT, @ProductId_Array Insert into ProductListSpecial (ModuleId,ProductId) Select @ModuleId,C.[ProductId] FROM OPENXML(@idoc, '/Products/Product', 3) with (ProductId int ) as C where C.[ProductId] is not null EXEC sp_xml_removedocument @idoc |
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