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 ...
SELECT V.NUM ID,V.XMFROM t MID RS PARTY VWHERE V.ZGH IN , , SELECT V.ZGHFROM t MID RS PARTY VGROUP BY V.ZGH HAVING COUNT V.ZGH gt ...
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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 ...
select * from (select * from ldcode where 1=1 order by code desc) where rownum<11--这样写是对的 select ...
这是查询有两条或者两条以上的数据 --先分组,在统计 select a.code from ldcode a where 1=1 GROUP BY a.code HAVING COUNT(a.code)> 1 这是查询有3条相同数据的情况 --先分组,在统计 select ...
根据某个字段查找该字段在哪里表中存在 ...
SELECT * from information_schema.columns where TABLE_SCHEMA='数据库名' and COLUMN_NAME='字段名' ...
select zyzlb,nation,frzw from jgdx where zyzlb in (select zyzlb from jgdx group by zyzlb having COU ...
SQLServer数据库查询带有某个字段的所有表名: (1)精确查询语句如下: SELECT [name] FROM [库名].[dbo].sysobjects WHERE id IN (SELECT id FROM [库名].[dbo].syscolumns WHERE name ...
select * from N041_湖北省房县人民医院 where bah in (select bah from N041_湖北省房县人民医院 group by bah having count( ...