主题：[求助]后台查询统计数据，列名无效

老师我从后台查询统计数据，代码如下，提示列名无效，麻烦老师帮忙看一下，谢谢！

Dim jt As Date = Date.Today.AddDays(htDate)
Dim dt1 As DataTable
Dim cmd1 As New SQLCommand
cmd1.C
cmd1.CommandText = "SELECT * F ROM {主合同}"
dt1 = cmd.ExecuteReader()
Dim cnt1 As Integer = dt1.SQLCompute("Count(合同编号)","合同结束日期 <= '" & jt & "'  And (已终止 = 0 Or 已终止 Is null)")    ’这个好像错误
Dim cnt2 As Integer = dt1.SQLCompute("Count(合同编号)","应收费日期 <= '" & jt & "'  And (已终止 = 0 Or 已终止 Is null)")    ’这个好像错误

错误信息：

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