标签:针对 ati sql语句 having tab group by group through ora
select sex,count(*) from table where count(*)>5
报错
sql语句的执行过程是:
from-->where-->group by -->having --> select--- >order by;
聚合函数针对结果集,where并不是在结果集后运行。
having针对结果集,把聚合函数放在having之后。
select sex,count(*) from table having count(*)>5
标签:针对 ati sql语句 having tab group by group through ora
原文地址:https://www.cnblogs.com/linyuansun/p/11645122.html