Step 1 connect to user using maintenance db "ie postgres"
Step 2 check whether database exists or not "SELECT 1 AS result FROM pg_database
WHERE datname='abc'"
Step 3 if not run "create database ...."
simple..
On 12 July 2011 17:14, Frank Bax
<fbax@sympatico.ca> wrote:
On 07/12/11 03:31, Roy's Email wrote:
Now I am particularly confused. How do I issue "CREATE DATABASE ..."
from my program? I thought that I needed a connection (PGconn) before I
could execute a command and I don't believe I have a valid connection if
my attempt to connect to a (non-existent) DB fails. [Does it change
anything that I'm writing in C++ and using the 'libpq' interface?]
Let's assume for the moment; that you know how to connect to an existing database and execute an SQL command like "SELECT ....".
Simply modify your code:
* change your connect command so it connects to "template1"
* change your "SELECT ..." statement to "CREATE DATABASE ..."
* close the connection and make a connection to database just created.
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