站长资源数据库
SQL语句查询数据库中重复记录的个数
简介复制代码 代码如下:select a,b,c,count(*) from (select c.a,c.b,c.c from test c) having count(*) >= 2 group by a,b,c 或者 复制代码 代码如下:select zdbh,tdzl,zdmj,count(*)
复制代码 代码如下:
select a,b,c,count(*) from (select c.a,c.b,c.c from test c) having count(*) >= 2 group by a,b,c
或者
复制代码 代码如下:
select zdbh,tdzl,zdmj,count(*) from ecaadmin.zdsx group by zdbh,tdzl,zdmj having count(*) >= 2
select a,b,c,count(*) from (select c.a,c.b,c.c from test c) having count(*) >= 2 group by a,b,c
或者
复制代码 代码如下:
select zdbh,tdzl,zdmj,count(*) from ecaadmin.zdsx group by zdbh,tdzl,zdmj having count(*) >= 2