已修正-这是我现在所拥有的 -用ASP编写
If Session("dateRange") = "Today" Then fromDate = Date() fromDate = Year(fromDate)&"-"&Month(fromDate)&"-"&Day(fromDate) whereClause = whereClause & "AND dateCreated = '"&fromDate&"' " ElseIf Session("dateRange") = "Yesterday" Then fromDate = DateAdd("d",-1,Date()) fromDate = Year(fromDate)&"-"&Month(fromDate)&"-"&Day(fromDate) whereClause = whereClause & "AND dateCreated = '"&fromDate&"' " ElseIf Session("dateRange") = "1 Week" Then fromDate = DateAdd("d",-7,Date()) fromDate = Year(fromDate)&"-"&Month(fromDate)&"-"&Day(fromDate) whereClause = whereClause & "AND dateCreated BETWEEN '"&fromDate&"' AND '"&toDate&"' " ElseIf Session("dateRange") = "1 Month" Then fromDate = DateAdd("m",-1,Date()) fromDate = Year(fromDate)&"-"&Month(fromDate)&"-"&Day(fromDate) whereClause = whereClause & "AND dateCreated BETWEEN '"&fromDate&"' AND '"&toDate&"' " ElseIf Session("dateRange") = "3 Months" Then fromDate = DateAdd("m",-3,Date()) fromDate = Year(fromDate)&"-"&Month(fromDate)&"-"&Day(fromDate) whereClause = whereClause & "AND dateCreated BETWEEN '"&fromDate&"' AND '"&toDate&"' " ElseIf Session("dateRange") = "6 Months" Then fromDate = DateAdd("m",-6,Date()) fromDate = Year(fromDate)&"-"&Month(fromDate)&"-"&Day(fromDate) whereClause = whereClause & "AND dateCreated BETWEEN '"&fromDate&"' AND '"&toDate&"' " ElseIf Session("dateRange") = "1 Year" Then fromDate = DateAdd("yyyy",-1,Date()) fromDate = Year(fromDate)&"-"&Month(fromDate)&"-"&Day(fromDate) whereClause = whereClause & "AND dateCreated BETWEEN '"&fromDate&"' AND '"&toDate&"' " End If
原始问题:
简单的问题,但由于某种原因,我似乎无法正常工作。
我有一个搜索框,旁边是日期范围选择菜单,因此用户可以搜索最近1个月,6个月或12个月内的照片。
我所拥有的没有错误,但是当它应该执行时它不会产生任何结果,就是这样:
WHERE dateCreated BETWEEN "&DateAdd("m",-6,Date())&" AND "&Date()&"
SQL输出产生以下结果:
dateCreated BETWEEN 18/03/2011 AND 18/09/2011 ORDER BY dateCreated DESC
数据库的’dateCreated’字段设置为(Date INDEX)。
谁能看到哪里出了问题?
结果SQL中的日期应用单引号引起来。尝试用引号将查询的动态部分引起来。像这样:
WHERE dateCreated BETWEEN '"&DateAdd("m",-6,Date())&"' AND '"&Date()&"'
我假设会产生此SQL:
dateCreated BETWEEN '18/03/2011' AND '18/09/2011' ORDER BY dateCreated DESC
另外,看看是否可以找到一种以更常用的MySQL yyyy-mm-dd格式格式化日期的方法。像这样:
yyyy-mm-dd
dateCreated BETWEEN '2011-03-18' AND '2011-09-18' ORDER BY dateCreated DESC