mysql 子查询 将最外表带入子查询内2层 的另一种解决方法

SELECT (

select count(*) from BORROW_LIST

where DELETE_FLAG=0 and BORROW_ID=c.BORROW_ID

group by LOAN_USER_ID

) as cyrs_COUNT，sum(...) ....

from BORROW c

这样查出来的数量是多个结果，无法对应其他字段 ，并且数据 并不是总人数

LOAN_USER_ID USER_NAME ..................

1 啊啊啊

23 啵啵啵

23 纯纯粹粹

35 点点滴滴

但是如果写成下面这样 的话 是无法取到c.BORROW_ID 的

SELECT (select count(*) from (

select count(*) from BORROW_LIST

where DELETE_FLAG=0 and BORROW_ID=c.BORROW_ID

group by LOAN_USER_ID ) d

) as cyrs_COUNT，sum(...) ....

from BORROW c

那么只有这样了~~~~~换个方法

SELECT (

select count(distinct(LOAN_USER_ID)) from BORROW_LIST

where DELETE_FLAG=0 and BORROW_ID=c.BORROW_ID

) as cyrs_COUNT，sum(...) ....

from BORROW c

这样就不用再套一层子查询了