Dim b As New sqlGroupTableBuilder("统计表1", "工序跟踪表")
b.C
改为
Dim sql As String = "Select * from 工序跟踪表 as a where exists(select * from 窗口表对应的后台表 as b where 查询出每个月1号和最后一天之间的明细的条件放进这里 and a.成本编码=b.成本编码 and a.毛坯编码=b.毛坯编码)"
Dim b As New GroupTableBuilder("统计表1",sql, "数据源名称")