Question

i am new to regx…i want to get the subquery from given query using regular expression.

For example i have query like following

Select * from (
   select * from Table_A where ID = 90 
   UNION 
   select * from Table_B where ID = 90
)  as SUBQUERY left join TABL_ABC abc ON (abc.id = SUBQUERY.id)

now i want my regular expression to match following lines only:

select * from Table_A where ID = 90 
   UNION 
   select * from Table_B where ID = 90

Please help me, Thank you in advance…

Answer 1

If it is a simple subquery without additional braces, you can just use this regexp

/\(\s*(select[^)]+)\)/i