oracle in 函数
2017-10-04 14:15:45

 IN操作符      select * from scott.emp where empno=7369 or empno=7566 or empno=7788 or empno=9999；      select * from scott.emp where empno IN （7369,7566,7788,9999）;      select * from scott.emp where  NOT IN （7369,7566,7788,9999）;  相反    复习：        找 ......

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