Question

 Dim rmfrom As Date
        rmfrom = DateTime.ParseExact(hapfromrm.Value, "dd/mm/yyyy", Nothing)
        Dim rmto As Date
        rmto = DateTime.ParseExact(hapfromrm.Value, "dd/mm/yyyy", Nothing)
        con.Open()
        cmd = New OleDbCommand("SELECT * FROM writes WHERE date_written BETWEEN " & rmfrom & " AND " & rmto & "", con)

它给了我以下错误：

查询表达式＆＃39; date_written中的语法错误（缺少运算符） BETWEEN 1/2/2015 12:11:00 AM和1/2/2015 12:11:00 AM＆＃39;。

解决方法是什么？任何帮助将不胜感激。

Answer 1

您需要为日期添加格式正确的字符串表达式：

cmd = New OleDbCommand("SELECT * FROM writes WHERE date_written BETWEEN #" & rmfrom.ToString("yyyy'/'MM'/'dd") & "# AND #" & rmto.ToString("yyyy'/'MM'/'dd") & "#", con)

日期时间选择中缺少运算符

1 个答案: