如何從兩個表在一個查詢中獲取記錄

Question

我有兩個表

1. rental_detail - > [id，Building，Floor，Flate_no，Name，doj]

rental_detail存儲的信息此人。
這是rental_detail

|id|name|building|Floor|Flate_no|doj |1 |aana| C | 1st |c-101 |06-12-2015

而在

Monthly_rent - 每月租金> [id，Building，Floor，Flate_no，date]存儲的細節由該人支付

這是month_rent

|id|building|Floor|Flate_no|date |rent| |1 | C | 1st |c-101 |02-01-2016|2000 |2 | C | 1st |c-101 |03-02-2016|2000 |1 | C | 1st |c-101 |06-12-2015|2000

我需要從Monthly_rent馬克斯日期和有關人員從rental_detail的所有信息，其中建築爲c，地板是1日和flate是C-101

我嘗試此查詢：

select *,max(mr.date) as m 
from monthly_rent mr 
Inner join rental_details rd 
    on rd.building='C' and rd.floor = '1st' And rd.flate_no='C-101 

我需要這個

|1|aana|C|1st|c-101|03-02-2016|

AANA工資最後租金2016年3月2日

Answer 1

試試這個：

select *, max(mr.date) as m 
from monthly_rent mr, rental_details rd 
where mr.id = rd.id 
and rd.building='C' 
and rd.floor = '1st' 
and rd.flate_no='C-101' 

這應該工作....

Answer 2

嘗試這樣，它應該幫助..

select rd.*,max(mr.date) as m 
from monthly_rent as mr 
LEFT join rental_details as rd ON mr.building = rd.building 
WHERE rd.floor = '1st' and rd.flate_no='C-101' 

Answer 3

試試這個：

SELECT rd .*,mr.date AS mr_date 
FROM rental_details rd 
LEFT JOIN monthly_rent mr 
ON rd.date = (SELECT MAX(date) FROM monthly_rent WHERE building='C') 
WHERE rd.building='C' AND rd.floor = '1st' AND rd.flate_no='C-101'