SQL Inner join on select statements

问题

I am trying to make an inner join on a select statement like this:

select *
from (select* from bars  where rownum <= 10 )as tab1
inner join (select * from bars  where rownum <= 10 )as tab2
on tab1.close=tab2.close

and I get the following error: ORA-00933 SQL command not properly ended Any help would be appreciated, thank you!

回答1:

Just remove as from your query:

select *
from (select* from bars  where rownum <= 10 ) tab1
inner join (select * from bars  where rownum <= 10 ) tab2
on tab1.close=tab2.close

回答2:

I believe the error comes from you needing a semicolon to end the statement. The select looks fine to me otherwise.

回答3:

select * from 
((select* from bars  where rownum <= 10 )as tab1
inner join (select * from bars  where rownum <= 10 )as tab2
on tab1.close=tab2.close)

回答4:

just give a whitespace between ')' and 'as':

select * from (select* from bars  where rownum <= 10 ) as tab1
 inner join
 (select * from bars  where rownum <= 10 ) as tab2
 on
 tab1.close=tab2.close

来源：https://stackoverflow.com/questions/1940579/sql-inner-join-on-select-statements