I want to combine these two SQL queries into one. Any idea on how do I do it?
Select A, B, C
from table1
where condition1
select D
from table2
where table1.B=table2.E
(table2 has the mapping of column B of table1)
I just want to fetch A,B,C,D in a single select query. Any help would be appreciated.
INNER JOIN (read up on joins here http://www.w3schools.com/sql/sql_join.asp )
SELECT A, B, C, D
FROM table1 t1
INNER JOIN table2 t2 ON t1.B = t2.E
WHERE condition1
You could use a join
:
select A, B, C, D
from table1
left join table2
on table1.B = table2.E
where condition1
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.