主题：[求助]日期

  Dim rq As Date = r("日期")
        'Dim y As Integer = rq.year
        'Dim m As Integer = rq.month
        'Dim d As Integer = rq.Day
        'Dim str As Date = new Date(y,m,d,0,0,0)
        'Dim enr As Date = new Date(y,m,d,23,59,59)
        'Dim drs As List(of DataRow) = DataTables("TimeRecords").SQLSelect("emp_id = '" & r("工号") & "' and sign_time >= '" & str & "' and sign_time<= '" & enr & "'","","sign_time")

我想问一下这个代码里面的SQLSELECT 的条件有没有办法优化一下,sign_time 是带时间的日期