摘要： 字段合并：select EVFOUNDATIONTYPEA || EVFOUNDATIONTYPEB|| EVFOUNDATIONTYPEC ||EVFOUNDATIONTYPED as b from T_FOUNDATION_SETTING t合并字段内容并统计：select a,Count(a)from (select EVFOUNDATIONTYPEA as a from T_FOUNDATION_SETTINGunion all select EVFOUNDATIONTYPEB from T_FOUNDATION_SETTINGunion all select EVFOUND... 阅读全文