Y yobdrow Unregistered / Unconfirmed GUEST, unregistred user! 2003-12-10 #3 MQurery select GroupId = 1 from table union select GroupId = 2 from table DQuery select GroupID = 1, * from table union select GroupID = 2, * from table 用主从Details--subDetails
MQurery select GroupId = 1 from table union select GroupId = 2 from table DQuery select GroupID = 1, * from table union select GroupID = 2, * from table 用主从Details--subDetails
Y yobdrow Unregistered / Unconfirmed GUEST, unregistred user! 2003-12-10 #5 在QR中使用主从架构 主DETAIL对应MQuery(虚拟生成两条记录) subDetail对应DQuery(用union生成两份同样的记录,只是GroupID不同 主从用虚拟字段GroupID关联