Re: [postgresql-it] SELECT senza la FROM
- From: Marco Mariani <marco.mariani@xxxxxxxxxxxx>
- To: postgresql-it <postgresql-it@xxxxxxxxxxxxx>
- Date: Thu, 03 Apr 2008 10:13:36 +0200
Gianni Giusti wrote:
Devo cambiare una serie di query, su un programma in php, che non ho
fatto io. Ho notato che molte sono SELECT senza la FROM.....
evidentemente postgresql le accettava. Il problema è che con il nuovo
postgresql, quelle query, giustamente, mi restituiscono errore.
Esiste un impostazione di postgresql 8 che mi permette di far
funzionare quelle query, senza che io vada a mettere le FROM a manina?
Forse questa
add_missing_from (boolean)
When on, tables that are referenced by a query will be automatically
added to the FROM clause if not already present. This behavior does
not comply with the SQL standard and many people dislike it because
it can mask mistakes (such as referencing a table where you should
have referenced its alias). The default is off. This variable can be
enabled for compatibility with releases of PostgreSQL prior to 8.1,
where this behavior was allowed by default.
Note that even when this variable is enabled, a warning message will
be emitted for each implicit FROM entry referenced by a query. Users
are encouraged to update their applications to not rely on this
behavior, by adding all tables referenced by a query to the query's
FROM clause (or its USING clause in the case of DELETE).
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