Re: LOCK TABLE HELP - Mailing list pgsql-general

From Alvaro Herrera
Subject Re: LOCK TABLE HELP
Date
Msg-id 20080314153941.GI4843@alvh.no-ip.org
Whole thread Raw
In response to Re: LOCK TABLE HELP  (Richard Huxton <dev@archonet.com>)
List pgsql-general
> luca.ciciriello@email.it wrote:

> My action are:
>
> void *Execute(void *pParam)
> {
>         ........................................
>         ........................................
>
>  & nbsp;      string tableLock = "BEGIN WORK;";
>         tableLock.append(" LOCK TABLE ");
>         tableLock.append(actorTable);
>         tableLock.append(" IN ACCESS EXCLUSIVE MODE;");
>         res = PQexec(connection, tableLock.c_str());


> Well, all this doesn't work (the connection is th e always the same in
> all methods and functions). Have I to Lock the table, perform some
> operation on this table, and unlock the table all in the same function
> scope?

What do you mean it doesn't work?  How exactly it fails?

If anything, I'd suggest to send the LOCK TABLE in a separate PQexec()
call from BEGIN WORK.

--
Alvaro Herrera                                http://www.CommandPrompt.com/
PostgreSQL Replication, Consulting, Custom Development, 24x7 support

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