我试图将逗号分隔的日期字符串发送到我的存储过程，以便在IN子句中使用 . 但是，我收到错误“从字符串转换日期和/或时间时转换失败 . ”
我正在尝试使用这些日期来查找匹配的价格 . C＃：
StringBuilder LastDaysOfEveryMonth = new StringBuilder();
DataAccess da = new DataAccess();
SqlCommand cm = new SqlCommand();
cm.CommandType = CommandType.StoredProcedure;
var pList = new SqlParameter("@DateList", DbType.String);
pList.Value = LastDaysOfEveryMonth.ToString();
cm.Parameters.Add(pList);
...
cm.CommandText = "spCalculateRollingAverage";
DataSet ds = da.ExecuteDataSet(ref cm);
调试时，传递的字符串的值为：
'2013-07-31','2013-08-30','2013-09-30','2013-10-31','2013-11-29','2013-12-31',
'2014-01-31','2014-02-28','2014-03-31','2014-04-03',
使用DbType字符串和SQLDbType NvarChar .
任何建议将不胜感激！ SQL：
CREATE PROCEDURE [dbo].[spCalculateRollingAverage]
@StartDate DateTime,
@EndDate DateTime,
@Commodity nvarchar(10),
@PeakType nvarchar (10),
@BaseID int,
@NumberOfMonths int,
@DateList nvarchar(MAX)
AS
BEGIN
select TermDescription,ContractDate,Price,SortOrder into #tbtp from BaseTermPrice
inner hash join Term
on
Term.TermID = BaseTermPrice.TermID
where
BaseID = @BaseID and ((@PeakType IS NULL and PeakType is null) or
(@PeakType IS NOT NULL and PeakType=@PeakType))
and ((@DateList IS NULL and ContractDate between @StartDate and @EndDate)
or (@StartDate IS NULL and ContractDate in (@DateList)))
order by
ContractDate,SortOrder
1 回答
您不能在这样的
IN子句中使用varchar变量 . 您必须将其添加到动态SQL才能执行，或者 - 将其拆分为临时表/临时变量 .例如，使用此SplitString函数，您可以执行以下操作：