perdon ... a los 3!!!!!!!!!!!!! 2010/6/18 monoBOT <monobot.s...@gmail.com>
> muchas gracias a los 2!!! > > > 2010/6/18 Antonio Beamud Montero <antonio.bea...@gmail.com> > > monoBOT escribió: >> >>> Hola ... como puedo obtener la cantidad de columnas de una tabla? >>> >>> hice lo siguiente de modo rudimentario pero seguramente existe una forma >>> mucho mas directa ... alguna pista? >>> >>> >>> orden = 'SELECT * FROM nombretabla WHERE id = 1' cursor.execute(orden) >>> for objeto in cursor: >>> valor = len(objeto)-1 >>> ------------------------------------------------------------------------ >>> >>> >>> >> >> de http://www.python.org/dev/peps/pep-0249/: >> >> Cursor Objects should respond to the following methods and >> attributes: >> >> .description This read-only attribute is a >> sequence of 7-item >> sequences. >> Each of these sequences contains information describing >> one result column: >> (name, type_code, display_size, >> internal_size, precision, scale, >> null_ok) >> >> The first two items (name and type_code) are mandatory, >> the other five are optional and are set to None if no >> meaningful values can be provided. >> >> This attribute will be None for operations that >> do not return rows or if the cursor has not had an >> operation invoked via the .execute*() method yet. >> The type_code can be interpreted by comparing it to >> the >> >> >> Es decir, si haces len(cursor.description) te dice el total de columnas. >> >> >> >> _______________________________________________ >> Python-es mailing list >> Python-es@python.org >> http://mail.python.org/mailman/listinfo/python-es >> FAQ: http://python-es-faq.wikidot.com/ >> > >
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