Question

这是我的存储过程

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命令成功完成。

但是当我用该参数执行该存储过程时

ALTER PROCEDURE [dbo].[sp_ListFirmJobFilter]
    (@Status as nvarchar(10),
     @CityID as nvarchar(10),
     @DataStart as date,
     @DataEnd as date,
     @FirmID as nvarchar(10)
)
AS
BEGIN
    DECLARE @Sql NVARCHAR(MAX) 
    SET @Sql = N'SELECT * FROM Jobs WHERE 1=1'

    IF @Status IS NOT NULL
    BEGIN
        SET @Sql += ' AND Status = '+@Status+''
    END

    IF @CityID IS NOT NULL
    BEGIN
        SET @Sql += ' AND CityID = '+@CityID+''
    END

    IF @FirmID IS NOT NULL
    BEGIN
        SET @Sql += ' AND FirmID = '+@FirmID+' '
    END

    IF @DataStart IS NOT NULL
    BEGIN
        SET @Sql += ' AND (InsertedDate >= ' + CONVERT(VARCHAR(50), @DataStart)
        SET @Sql += ' AND InsertedDate <= ' + CONVERT(VARCHAR(50), @DataEnd)
        SET @Sql += ')'
    END 

    PRINT(@Sql)
    EXEC(@Sql)
END

我收到错误：

操作数类型冲突：日期与int
不兼容

我查找已执行的SQL命令（Print SQL string）。这是执行命令：

DECLARE @return_value int

EXEC @return_value = [dbo].[sp_ListFirmJobFilter]
                        @Status = NULL,
                        @CityID = null,
                        @DataStart = N'2016-06-26',
                        @DataEnd = N'2016-06-28',
                        @FirmID = 4

SELECT  'Return Value' = @return_value
GO

当我执行它时会出现同样的错误。我改成了：

SELECT * 
FROM Jobs 
WHERE 1=1 
  AND FirmID = 4  
  AND (InsertedDate >= 2016-06-26 AND InsertedDate <= 2016-06-28)

这很有效。

我该怎么办？ SELECT * FROM Jobs WHERE 1=1 AND FirmID = 4 AND (InsertedDate >= '2016-06-26' AND InsertedDate <= '2016-06-28')类型为日期

Answer 1

用单引号包裹日期

SET @Sql += ' AND (InsertedDate >= ''' + CONVERT(VARCHAR(50), @DataStart) +''''
SET @Sql += ' AND InsertedDate <= ''' + CONVERT(VARCHAR(50), @DataEnd) +''''
SET @Sql += ')'

Answer 2

正如Squirrel所提到的，你自己也注意到了，日期必须用单引号括起来。

就我个人而言，我喜欢使用QUOTENAME：

SET @Sql += ' AND InsertedDate <= ' + QUOTENAME(CONVERT(VARCHAR(50), @DataEnd), '''')

Answer 3

您需要将日期字符串括在单引号中

SET @Sql += ' AND (InsertedDate >= ==' + CONVERT(VARCHAR(50), @DataStart) + ''''

存储过程操作数类型冲突：日期与int不兼容

3 个答案: