Question

我正在尝试在SQL中编写一个where子句，其中有一个日期范围搜索，但如果用户输入一个票号，它将完全忽略日期范围。

我遇到的问题是日期范围不起作用，无论您输入的是什么日期（没有票号），它都会返回所有结果。

Opened connection at 12/02/2016 12:26:49 +01:00

SELECT 
    [GroupBy1].[A1] AS [C1]
    FROM ( SELECT 
        COUNT(1) AS [A1]
        FROM [dbo].[fsign_fiche_signaletique] AS [Extent1]
    )  AS [GroupBy1]


-- Executing at 12/02/2016 12:26:52 +01:00

-- Completed in 10 ms with result: SqlDataReader



Closed connection at 12/02/2016 12:26:52 +01:00

Opened connection at 12/02/2016 12:26:52 +01:00

SELECT 
    [GroupBy1].[A1] AS [C1]
    FROM ( SELECT 
        COUNT(1) AS [A1]
        FROM [dbo].[fsign_fiche_signaletique] AS [Extent1]
    )  AS [GroupBy1]


-- Executing at 12/02/2016 12:26:52 +01:00

-- Completed in 5 ms with result: SqlDataReader



Closed connection at 12/02/2016 12:26:52 +01:00

The program '[4316] ConsoleApplication1.vshost.exe' has exited with code -1073741510 (0xc000013a).

Answer 1

如果输入空白票号，则第一部分的评估结果为：

weighing.TicketNo LIKE '%%'

有多少条记录满足？所有这些。

我建议你试试这个：

(ISNULL(@TicketNo,'') <> '' AND weighing.TicketNo LIKE '%'+ @TicketNo + '%')
OR 
(ISNULL(@TicketNo,'') = ''  AND [Weighing].[WeighingDate] 
 BETWEEN @startDate AND @endDate)

SQL条件where子句不起作用

1 个答案: