 - stored functions as pl/sql
 - stored conditions: 'LEFT JOIN prdocuts p ON(p.id = product_id) WHERE p.group = 4'
    - contains joins
 - stored queries (only SELECT?)

name:
    - stored sql?
    
    
https://en.wikipedia.org/wiki/Augmented_Backus%E2%80%93Naur_Form
