techcode:

Wrap all your operations in a single transaction and let the database do the work for you. More like:

$db->{AutoCommit}=0;
$db->begin_work();
$db->do(operation 1);
$db->do(operation 2);
$db->do(operation 3);
$db->commit();

[download]

Once you start a transaction, the database should prevent you from updating the same rows until you complete the current one.

...roboticus

In reply to Re: DBI and PostgreSQL advisory locks by roboticus
in thread DBI and PostgreSQL advisory locks by techcode

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