I'm trying to use prepared statements in an application and I'm running into this error: "Query failed: prepared statement already exists".
The reason is obvious. What I want to know is the best way to avoid getting this error. The client application sets statement names as MD5 of the actual query text, which means there's a possibility of a clash between different parts of the applications if they attempt to prepare the same query in the lifetime of a connection. Possible solutions, please advise: 1) Something like PREPARE IF NOT EXISTS. I'm guessing no such luck. 2) Tweaking the Postgres error reporting to ignore this particular error. Is it possible? From a non-priviledged client connection? 3) Reading a list of all the currently defined prepared statements to see if the one I want is already prepared. I'm hoping some "magic" SELECT in pg's internal tables may do the trick. But I also worry about introducing overhead this way. I also imagined some workarounds in the code (PHP), such as defining a global/static hash table and registering statement names with it. But I'd like to know if there's a better way. -- Sent via pgsql-general mailing list (pgsql-general@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-general
