主题：一个简单的统计问题,把我搞晕了

Dim g As New GroupTableBuilder("aa", DataTables("表A"))

g.Groups.AddDef("第一列")

g.Groups.AddDef("第二列")

g.Totals.AddDef("第二列",AggregateEnum.Count)

g.Totals.AddDef("第三列")

g.Build()

Dim g1 As New GroupTableBuilder("统计表3", DataTables("aa"))

g1.Groups.AddDef("第一列")

g1.Totals.AddDef("第二列", AggregateEnum.Count)

g1.Totals.AddDef("第三列")

g1.Build()

MainTable = Tables("aa")

Syscmd.Table.Delete()

MainTable = Tables("统计表3")

MainTable = Tables("统计表3")