SQL数据库查询出一张表中重复的数据,按某个字段来查找。
例如表名为Course 需要查询出name重复的有那些??? 解答如下: 补充: 如:查询每个姓名出现大于2次,SQL如下 SELECT COUNT(NAME) as '出现次数', NAME FROM 表名GROUP BY NAME HAVING count(NAME) &g...
SQL数据库查询出一张表中重复的数据,按某个字段来查找。
SELECT V.NUM_ID,V.XMFROM t_MID_RS_PARTY VWHERE V.ZGH IN('060002','100178','120283') SELECT V.ZGHFROM t_MID_RS_PARTY VGROUP BY V.ZGH HAVING COUNT(V.ZGH...