搜索存儲過程（SQL Server） - 從字符串轉換日期和/或時間時轉換失敗 - 簡單嗎？

Question

我有一個存儲過程，我將3個變量bankNumber,branchNumber和DateFrom傳遞給。

基於這些變量，我想查詢表（在下面的圖片中看到的存儲過程）返回符合我傳遞的標準（通過變量）的所有記錄。當我通過它DateFrom變量

Conversion failed when converting date and/or time from character string

這似乎是失敗的：

相反，我正在此錯誤。

謝謝您的幫助

ALTER PROCEDURE [dbo].[Search_Records] 
    @bankNumber varchar(3), 
    @branchNumber varchar(3), 
    @dateCreated datetime 
AS 
BEGIN 
    -- SET NOCOUNT ON added to prevent extra result sets from 
    -- interfering with SELECT statements. 
    SET NOCOUNT ON; 

    -- Insert statements for procedure here 
    DECLARE 
     @Bank_Number varchar(3) = @bankNumber, 
     @Branch_Number varchar(3) = @branchNumber, 
     @DateFrom datetime = @dateCreated, 
     @DateTo datetime = @dateCreated 

    SELECT DISTINCT  
     A.bankNumber, 
     A.branchNumber, 
     A.dateCreated 
    FROM   
     dbo.CENSORED A 
    WHERE 
     (@Branch_Number IS NULL OR bankNumber LIKE @BankNumber + '%') 
     AND (@Branch_Number IS NULL OR branchNumber LIKE @Branch_Number + '%') 
     AND (@DateFrom IS NULL OR dateCreated LIKE + @DateFrom + '%') 
     AND (@DateTo IS NULL OR dateCreated LIKE + @DateTo + '%') 
    END 

Answer 1

您不能使用LIKE運營商與datetime值。如果您僅在月份進行匹配，則需要使用MONTH()函數。 LIKE運算符只能與字符串數據類型一起使用。

沒有看到所有這些變量在存儲過程中聲明的點，一個簡化版本應該是這個樣子....

ALTER PROCEDURE [dbo].[Search_Records] 
    @bankNumber varchar(3), 
    @branchNumber varchar(3), 
    @dateCreated datetime 
AS 
BEGIN 
    SET NOCOUNT ON; 

    SELECT DISTINCT  
     A.bankNumber, 
     A.branchNumber, 
     A.dateCreated 
    FROM   
     dbo.CENSORED A 
    WHERE 
      (@Branch_Number IS NULL OR bankNumber LIKE @bankNumber + '%') 
     AND (@Branch_Number IS NULL OR branchNumber LIKE @branchNumber + '%') 
     AND (@dateCreated IS NULL OR (MONTH(dateCreated) = MONTH(@dateCreated) 
             AND 
             YEAR(dateCreated) = YEAR(@dateCreated))) 

END 

注

這將產生一個非常低效執行計劃，考慮使用動態sql查詢與這樣的可選參數。