Yes, now it works, thanks a lot Michael. :-) j Michael Bayer wrote:
func.cast() is not correct. Use the cast() function which handles this special syntax:from sqlalchemy import cast, Integer from sqlalchemy.sql import column from sqlalchemy.dialects import oracle print cast(column('x'), Integer).compile(dialect=oracle.dialect()) CAST(x AS INTEGER) On Apr 18, 2012, at 10:30 AM, jo wrote:I'm using oracle. The error exists even without REGEXP_LIKE: session.query(sa.func.max(sa.func.cast(sa.func.substr(Azienda.c.codice_aziendale,2), sa.Integer))).scalar() NotSupportedError: (NotSupportedError) Variable_TypeByValue(): unhandled data type Integer 'SELECT max(cast(substr(azienda.codice_aziendale, :substr_1), :cast_1)) AS max_1 \nFROM azienda' {'substr_1': 2, 'cast_1': Integer()} ----------------- the error is on func.cast, if I remove the cast function, it works: session.query(sa.func.max(sa.func.substr(Azienda.c.codice_aziendale,2))).filter(sa.func.REGEXP_LIKE(Azienda.c.data_inizio, '[[:digit:]]')).scalar() SELECT max(substr(azienda.codice_aziendale, :substr_1)) AS max_1 FROM azienda WHERE REGEXP_LIKE(azienda.data_inizio, :REGEXP_LIKE_1) {'REGEXP_LIKE_1': '[[:digit:]]', 'substr_1': 2} Out[12]: u'_999' Michael Bayer wrote:we would need to know what database you're using. It's likely your DB doesn't support REGEXP_LIKE. On Apr 18, 2012, at 4:00 AM, jo wrote:Hi all, Someone could help me with this query? SELECT MAX(CAST(SUBSTR(codice_aziendale, 2) AS INTEGER)) FROM azienda WHERE codice_aziendale LIKE '#%%' AND REGEXP_LIKE(SUBSTR(codice_aziendale, 2) , '[[:digit:]]') I'm trying in this way: session.query(sa.func.max(sa.func.cast(sa.func.substr(Azienda.c.codice_aziendale,2), sa.Integer))).filter(sa.func.REGEXP_LIKE(Azienda.c.data_inizio, '[[:digit:]]')).scalar() but I got this error: NotSupportedError: (NotSupportedError) Variable_TypeByValue(): unhandled data type Integer 'SELECT max(cast(substr(azienda.codice_aziendale, :substr_1), :cast_1)) AS max_1 \nFROM azienda \nWHERE REGEXP_LIKE(azienda.data_inizio, :REGEXP_LIKE_1)' {'REGEXP_LIKE_1': '[[:digit:]]', 'substr_1': 2, 'cast_1': Integer()} j -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.-- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To post to this group, send email to sqlalchemy@googlegroups.com. To unsubscribe from this group, send email to sqlalchemy+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/sqlalchemy?hl=en.
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