Query master-slave table A and B is two TClientDataSet, and A-B is a master-slave table is the primary table, A, B from table. If you know the B table, B.DataSetField can get A.

query主从表
...........\Project1.cfg
...........\Project1.dof
...........\Project1.dpr
...........\Project1.exe
...........\Project1.res
...........\Unit1.dcu
...........\Unit1.ddp
...........\Unit1.dfm
...........\Unit1.pas
...........\Unit2.dfm
...........\Unit2.pas

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