主题：关联查询，查询结果不对

        '关联查询保证金
        Dim cmd As New SQLCommand
        cmd.C
        DataTables("GuarantyFundall").Load
        Tables("GuarantyFundall").Refresh
        Dim sql As String
        Dim yj As Integer=0
        If values.Length >1 Then
            sql="SELECT a.JTPH, a.buyer_name,sum(case when a.status = 1 and b.inout=1  then a.balance else  0 end)+sum(case when a.status = 1 and b.inout=0  then a.balance+a.amount else  0 end)+sum(case when a.status = 0 and b.inout=0  then a.amount else  0 end) as 可退保证金,sum(Case when a.status=1 Then a.balance Else 0 End) As balance FROM GuarantyFundall a LEFT JOIN GuarantyFund_Operation_Type b ON a.operation_type = b.operation_type  where (a.status = 1  Or (a.operation_type=2 And a.status=0)) and  a.buyer_name in(" & name & ") GROUP BY a.JTPH,a.buyer_name "
        Else
            sql="SELECT a.JTPH, a.buyer_name,sum(case when a.status = 1 and b.inout=1  then a.balance else  0 end)+sum(case when a.status = 1 and b.inout=0  then a.balance+a.amount else  0 end)+sum(case when a.status = 0 and b.inout=0  then a.amount else  0 end) as 可退保证金,sum(Case when a.status=1 Then a.balance Else 0 End) As balance FROM GuarantyFundall a LEFT JOIN GuarantyFund_Operation_Type b ON a.operation_type = b.operation_type  where (a.status = 1  Or (a.operation_type=2 And a.status=0)) and a.buyer_name=" & name & " GROUP BY a.JTPH,a.buyer_name"
        End If
       
       
        Dim dt As Table = Tables("GuarantyFundall")
        cmd.CommandText=sql
        dt.DataSource = cmd.ExecuteReader()
        tb12.Text=dt.Compute("sum(balance)")

 

sql语句没有问题，查出来的数据不是最新的！代码在命令窗口执行也不是最新的，sql语句在执行sql里面 数据就对了，和数据库一样！这是怎么回事

之前只有加载的，看数据不是最新的，我又加了个刷新 试了一下 还是不行

 

 

问题是查询出来的结果跟数据库不一样，而且怎么查都是一个结果！

我这个查询是没有对应表控件的，只想实现从外部数据库查询最新的数据