主题：sqljointablebuilder临时表数据为空

请问我按照下面写了段代码，但执行后只有表头，而没有任何数据？不知为什么？

Dim jb As New SQLJoinTableBuilder("短信列队查询表","联系人信息")
jb.C
jb.AddTable("联系人信息","客户代码","客户信息","客户代码")
jb.AddTable("联系人信息","客户代码","短信","客户代码")
jb.AddCols("{客户信息}.客户名称", "信息状态","分支机构","省地址","分类","客户价值","{联系人信息}.姓名","部门","职位","移动电话","发送日期","发送状态")
jb.Build()
MainTable = Tables("短信列队查询表")