Re: Executing on the connection?

On 02/12/20, Daniele Varrazzo (daniele(dot)varrazzo(at)gmail(dot)com) wrote:
> I'm toying with the idea of adding a 'connection.execute(query,
> [params])' methd, which would basically just create a cursor
> internally, query on it, and return it. No parameter could be passed
> to the cursor() call, so it could only create the most standard,
> client-side cursor (or whatever the default for the connection is, if
> there is some form of cursor_factory, which hasn't been implemented in
> psycopg3 yet). For anything more fancy, cursor() should be called
> explicitly.
>
> As a result people could use:
>
> conn = psycopg3.connect(dsn)
> record = conn.execute(query, params).fetchone()
> # or
> for record in conn.execute(query, params):
> ... # do something

The only issue I see with this sort of approach is the problem of having
to set the search path, which I believe needs to be done for each
cursor where custom search paths are used.

Maybe there can be a with context to allow explicit cursor setup and
teardown around an execute statement if needed, or to provide settings
to the execute function.

> No other methods bloating the connection interface: no executemany(),
> copy(), callproc (actually there will be no callproc at all in
> psycopg3: postgres has no fast path for function call and too much
> semantics around stored procedure that a single callproc() couldn't
> cover).

Ah. We presently use callproc a lot, together with NamedTupleConnection,
which works brilliantly for us.

Rory