return a non-null object pointer, unless perhaps there is too
little memory even to allocate the <structname>PGconn</> object.
The <function>PQstatus</> function should be called to check
- whether a connection was successfully made before queries are sent
+ the return value for a successful connection before queries are sent
via the connection object.
<warning>
Returns a <structname>PGresult</structname> pointer or possibly a null
pointer. A non-null pointer will generally be returned except in
out-of-memory conditions or serious errors such as inability to send
- the command to the server. If a null pointer is returned, it should
- be treated like a <symbol>PGRES_FATAL_ERROR</symbol> result. Use
+ the command to the server. The <function>PQresultStatus</> function
+ should be called to check the return value for any errors (including
+ the value of a null pointer, in which case it will return
+ <symbol>PGRES_FATAL_ERROR</symbol>). Use
<function>PQerrorMessage</function> to get more information about such
errors.
</para>