Question

我想为逗号分隔的字符串中的每个值运行我的存储过程。假设我有（'10,20,30'）所以sp应首先运行10然后运行20和30并将结果返回到单个表中。 Sp将为每个值返回单行。我已经尝试使用游标，但没有像它应该的那样工作。

SET ANSI_NULLS OFF
GO   

SET QUOTED_IDENTIFIER OFF
GO

ALTER PROCEDURE [dbo].[z_Formulas2]
(
    @Fund_ID nvarchar,      --('32,25,201')
    @XFund_ID bigint, 
    @Start_Dated datetime,
    @End_Dated datetime
)   
AS
    DECLARE @FUNDS TABLE(FundId BIGINT)
    INSERT INTO @FUNDS
    SELECT item FROM dbo.SplitString(@Fund_ID, ',') --Split string parse csv into table
    SELECT * FROM @FUNDS
    DECLARE @MyCursor CURSOR;
    DECLARE @CurFund BIGINT;

BEGIN
SET @MyCursor = CURSOR FOR SELECT FundId FROM @FUNDS   
OPEN @MyCursor 
FETCH NEXT FROM @MyCursor 
INTO @CurFund

WHILE EXISTS (SELECT FundId FROM @FUNDS)
BEGIN... --Logic part
 FETCH NEXT FROM @MyCursor 
 INTO @CurFund 
END

CLOSE @MyCursor ;
DEALLOCATE @MyCursor;
END

// dbo.SplitString

ALTER FUNCTION [dbo].[SplitString]
(    
      @Input NVARCHAR(MAX),
      @Character CHAR(1)
)
RETURNS @Output TABLE (
      Item NVARCHAR(1000)
)
AS
BEGIN
      DECLARE @StartIndex INT, @EndIndex INT

      SET @StartIndex = 1
      IF SUBSTRING(@Input, LEN(@Input) - 1, LEN(@Input)) <> @Character
      BEGIN
            SET @Input = @Input + @Character
      END

      WHILE CHARINDEX(@Character, @Input) > 0
      BEGIN
            SET @EndIndex = CHARINDEX(@Character, @Input)

            INSERT INTO @Output(Item)
            SELECT SUBSTRING(@Input, @StartIndex, @EndIndex - 1)

            SET @Input = SUBSTRING(@Input, @EndIndex + 1, LEN(@Input))
      END

      RETURN
END

Answer 1

看起来没有正确使用光标。

DECLARE @MyCursor CURSOR;
DECLARE @CurFund BIGINT;
BEGIN
    SET @MyCursor = CURSOR FOR SELECT FundId FROM @FUNDS   
    OPEN @MyCursor 
        FETCH NEXT FROM @MyCursor 
        INTO @CurFund

        WHILE EXISTS (SELECT FundId FROM @FUNDS)
        BEGIN
             --Logic part
        END
    CLOSE @MyCursor ;
    DEALLOCATE @MyCursor;
END

在此代码段中，跳过了FETCH NEXT块中的另一个WHILE运算符。使用WHILE @@FETCH_STATUS = 0代替您的WHILE EXISTS (SELECT FundId FROM @FUNDS)也是正确的，因为它始终会返回true。

以逗号分隔的字符串运行每个值的存储过程

1 个答案: