主题：SQLJoinTableBuilder 报语法错误。

如果要根据多列关联，请参考：

Dim jb As New SQLJoinTableBuilder("统计表1","产品")
Dim Cols1() As String = {"型号","规格"}
Dim Cols2() As String = {"型号","规格"}
jb.AddTable("产品",Cols1,"订单",Cols2)