Hi,
I hale a problem with counting interwal and I can't find what to do with
this. 
I have two fields in the table:
    Column       |  Type   | Modifiers
-----------------+---------+-----------
 date_in         | date    |
 interwal_months | numeric |
-----------------+---------+-----------

Query
SELECT date_in + INTERVAL '3 MONTH' FROM any_table
works fine of course. 

However, how to do something like that?
SELECT date_in + INTERVAL ' interwal_months MONTH' FROM any_table

I hope I'm just blind.. ;-)
Thanks for any help.
MK



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