主题：[求助]选取重复项

Dim jb1 As New SQLJoinTableBuilder("查询表1", "汇总表")

jb1.ConnectionName = "ABC"

jb1.AddTable("汇总表", "编号", "档案", "业务编号")

jb1.AddCols("年份", "月份", "客户名称", "季度", "大类", "性质", "数量", "金额")

jb1.Filter = "年份='" & KS & "' and 日期 <= 截止日期"

Dim jb2 As New SQLJoinTableBuilder("查询表1", "汇总表")

jb2.ConnectionName = "ABC"

jb2.AddTable("汇总表", "编号", "档案", "业务编号")

jb2.AddCols("年份", "月份", "客户名称", "季度", "大类", "性质", "数量", "金额")

jb2.Filter = "年份='" & KS1 & "' and 日期 > 截止日期"

jb1.Union(jb2, True)

jb1.Build()

上面JB1和JB2是有重叠部分的，想把这重叠部分提取出来，要怎么弄