[DB-SIG] API 3.0 limiting paramstyle to ['named', 'qmark'] is okay. ('format' is not desirable)

[Michael Bayer]

On May 17, 2013, at 12:33 PM, Christoph Zwerschke <cito at online.de> wrote:

> Am 17.05.2013 18:21, schrieb Daniele Varrazzo:
> > Quite the contrary: the quotes should never appear in the query and
> > these examples are correct but...
> 
> Just tested this with psycopg2. If you use the clause "WHERE name=%s" and pass a value without quotes, you get a ProgrammingError from the database. So is psycopg2 not properly implementing DBAPI 2?

right, did you pass any parameters to execute()? I believe if no parameters are present, it decides not to do the "%" operation.   Other DBAPIs that don't use format/pyformat don't have this behavior.