[英]How to fix the error - Operand type clash: date is incompatible with int
[英]Error: 'Operand type clash: date is incompatible with int ' on date type
我在SQL Server中有一個帶有date
數據類型列的表。
我想選擇ExpireDate >= Datetime.Now
我使用存儲過程。
ALTER PROCEDURE [dbo].[Ad_SelectByCommand]
@Where varchar(max),
@SQLSort varchar(max)
AS
DECLARE @query varchar(max);
IF @Where <> N'' SET @Where = N' WHERE ' + @Where
IF @SQLSort <> N'' SET @SQLSort = N' ORDER BY ' + @SQLSort
SET @query = 'SELECT [Id], [Name], [Description], [Image], [ExpireDate], [Cost], [IsPayment] FROM [dbo].[Ad]' + @Where + @SQLSort
EXEC(@query)
並在C#中使用它:
var list = clsAdFactory.GetAllByCommand("ExpireDate>=" + DateTime.Now.ToShortDateString());
和
var list = clsAdFactory.GetAllByCommand("ExpireDate>=" + DateTime.Now.ToString("dd/MM/yyyy"));
但是我得到了錯誤
操作數類型沖突:日期與int不兼容
將日期用引號引起來:
string whereClause = string.Format(@"ExpireDate >= '{0}'", DateTime.Now.ToShortDateString());
var list = clsAdFactory.GetAllByCommand(whereClause);
嘗試以下方法:
var list = clsAdFactory.GetAllByCommand("ExpireDate>='" + DateTime.Now.ToShortDateString()) + "'";
您最終的SQL是這樣的:
WHERE ExpireDate>=20140101
什么時候應該更像這樣:
WHERE ExpireDate>='20140101'
您甚至可能需要一些額外的單引號使它保持高興:
var list = clsAdFactory.GetAllByCommand("ExpireDate>=''" + DateTime.Now.ToShortDateString()) + "''";
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