Description: Delphi uses exists and noexists database query example. Can the intersection and difference sets, are interested in the reference. With a database file, in the Database folder, please attach a database and database connection information before the test.
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Delphi使用exists和noexists\datebase\SQLSL_Data.MDF
..........................\........\SQLSL_Log.LDF
..........................\Project2.cfg
..........................\Project2.dof
..........................\Project2.dpr
..........................\Project2.res
..........................\Unit1.ddp
..........................\Unit1.dfm
..........................\Unit1.pas
..........................\datebase
Delphi使用exists和noexists
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