select x1,x2,(select count(*) from xxtable) as count
from xxtable
得到每次查询总共有多少条记录,我现在有两张表连接查询如下,我也想知道根据条件每次查询的总记录条数,着个sql语句怎么写??
select a.x1,a.x2,b.x3,x4
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
4 个解决方案
#1
select a.x1,a.x2,b.x3,x4,(select count(*) from xxtable1 as a1,xxtable2 as b1 where a1.id=b1.id and (orther conditions) ) as cout
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
#2
#3
加2个
类似(select count(*) from xxtable) as count
的子句不就行了吗?
类似(select count(*) from xxtable) as count
的子句不就行了吗?
#4
select a.x1,a.x2,b.x3,x4,(SELECT COUNT(*) FROM ... WHERE ...)
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
#1
select a.x1,a.x2,b.x3,x4,(select count(*) from xxtable1 as a1,xxtable2 as b1 where a1.id=b1.id and (orther conditions) ) as cout
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
#2
#3
加2个
类似(select count(*) from xxtable) as count
的子句不就行了吗?
类似(select count(*) from xxtable) as count
的子句不就行了吗?
#4
select a.x1,a.x2,b.x3,x4,(SELECT COUNT(*) FROM ... WHERE ...)
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)
from xxtable1 as a,xxtable2 as b
where a.id=b.id and (orther conditions)