thanks i will use select count (*) i was making a leap that there would be something in pgdb which allows a function like:
sql_txt = "select * from addresses" cursor.execute(sql_txt) rows=cursor.fetchall() rows_returned = cursor_result.rowcount where the rowcount property contains the number of rows returned by the select statement defined and executed. just wanted to see whether such a property was available in sqlalchemy using the relational expression interface. On Mar 13, 9:38 am, "Michael Bayer" <mike...@zzzcomputing.com> wrote: > database cursors are essentially iterators so a total rowcount, without > fetching all the rows, is not available in a platform-agnostic way. > > the usual strategy to find out how many rows of something exist in the DB > is to do SELECT COUNT(*). > > > > Stephen Emslie wrote: > > > Well, I would have expected ResultProxy.rowcount to do just that > > (return the number of rows in the last executed statement) but I just > > get 0 from it. Perhaps someone could explain how to use it correctly. > > > Stephen Emslie > > > On Thu, Mar 12, 2009 at 5:20 PM, jeff <jeffre...@gmail.com> wrote: > > >> hi. this question should be easy. i've searched around though and > >> haven't found the answer. all i want to do is know the number of > >> records in a result set i get using an execute statement with a simple > >> select. so if i do: > > >> s=select([raw_table],and_(raw_table.c.name==m > >> ['name'],raw_table.c.as_of>=i['first_time'])) > >> rec_list=conn.execute(s) > > >> is there a simple way to get back the number of records that exist in > >> rec_list? > > >> thanks, i'm sure it's simple and i missed something.- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ 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 -~----------~----~----~----~------~----~------~--~---
