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Re: MySQL can't find index = really slow query...
Posted by: Bob Field
Date: September 25, 2006 08:49AM

The first thing I'd do is to convert to the new ANSI syntax, organization the joins and join conditions into some sort of order:
SELECT a.PRATICA_ID, p.situaz, p.tipo_prat, d.ragsoc, d.telefono, d.indirizzo, d.comune_id, c.descr, c.provincia_ID, pr.descrizione, pr.regione_ID, r.regione_ID, r.descrizione, p.importo_capitale, n.notecli
FROM affidamenti_procuratore AS a
JOIN pratiche AS p          ON p.pratica_ID = a.pratica_ID
JOIN noteprat AS n          ON n.pratica_ID = p.pratica_ID
JOIN anagrafe_debitori AS d ON p.anagrafe_debitore_ID = d.anagrafe_debitore_ID
JOIN comuni AS c            ON c.comune_ID = d.comune_ID
JOIN province AS pr         ON pr.provincia_ID = c.provincia_ID
JOIN regioni AS r           ON r.regione_ID = pr.regione_ID
WHERE a.anagrafe_procuratore_ID = 4
AND a.fine IS NULL
AND n.pratica_ID=34054
Then run an EXPLAIN and post the result.

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Re: MySQL can't find index = really slow query...
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September 25, 2006 08:49AM


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