oracle报错ora00979,ORA-00979: not a GROUP BY expression报错处理
环境:OracleDatabase11gR2(11.2.0.2)onLinux故障现象:执行GroupBy语句报错ORA-00979。具体的SQL如下:SQL>selecta.d1,a.EXIT_type,round(a.cnt1/b.cnt2*100,2)from2(selectsubstr(LOGIN_DATE,1,8)d1,EXIT_type,count(*)cnt1fromxxx_conn