摘要:
This is a common but frustrating error that can create real problems. The cause for this error is one or more of the following: A primary key for the table is not listed in the Update Properties for the DataWindow.The primary key selected allows and has duplicates.The Update Properties for the Dat.. 阅读全文
摘要:
先删除子表信息,然后修改主表的主键信息,最后再添加子表信息。直接修改不行,有主外键约束。所以执行以上操作。 阅读全文