在这种情况下如何编写嵌套查询？

Question

cars_aircraft table

id, aircraft_name, home_base_address,alternate_base_airport 

1 ,     MIG 20   ,         77   ,               80

2   ,   MIG 30   ,         80       ,50           

cars_airport table

id ,airport_city , airport_name

1    ,  mumbai      ,    CST

2   , pune       ,    PIA

i need aircraft_name,airport_name as a result for airport_city="mumbai".

Condition is that in search not only searched city's aircraft will come as well as neighour city's aircraft should also come.

ie neighour city of mumbai is pune(based on alternative_base_airport value of mumbai which is home_base_address of pune , so for mumbai search mumbai and pune both should come)

please help

Answer 1

The second table doesn't look like it's got any association with the first... but this is something you can do:

Select * from table where airport="Mumbai" union select * from table where home_base in (select alternative_base from table where homebase = "Mumbai")