Question

I am building a site and i need to retrieve some information. I have this query.

$SQL = "SELECT distretto_108, provinca_113, regioni_116, tipologia_pdv_106, 
        richiesta_ccnl_107, coop_va_109, nome_pdv_110, 
        indirizzo_pdv_111, localita_112 
        FROM civicrm_value_informazioni_su_tute_le_schede_p_22 ";  

I need to add this other code:

WHERE civicrm_event.title_en_US='".addslashes($_GET["titles"])."' 

but it’s not working…
i need to compare let’s say the id of another table with the id of the current table… How to do that?

Thanks in advance…

Answer 1

You should learn something about joining tables…

Do not know what the relation is between the two tables (simply said: what column from one table is pointing to what column at other one), but try something similar (modification needed to meet You DB structure) – now lets assume both tables have related column called event_id:

$SQL = "SELECT distretto_108, provinca_113, regioni_116, tipologia_pdv_106, 
        richiesta_ccnl_107, coop_va_109, nome_pdv_110, 
        indirizzo_pdv_111, localita_112 
    FROM civicrm_value_informazioni_su_tute_le_schede_p_22 cvistlsp22
    LEFT JOIN civicrm_event ce ON ce.event_id = cvistlsp22.event_id
    WHERE ce.title_en_US='".mysql_real_escape_string($_GET["titles"])."'";

civicrm_value_informazioni_su_tute_le_schede_p_22 table name is very long and You will not be able to create a table with such long name in other DBMS (e.g. ORACLE), so try to make it shorter while still self-describing…

If You want to join tables they have to have a relation, read more about relations and how to use them here: http://net.tutsplus.com/tutorials/databases/sql-for-beginners-part-3-database-relationships/