>>> from sqlalchemy.sql.expression import func >>> from sqlalchemy import func as other_func >>> func == other_func True
2012/3/8 Timuçin Kızılay <t...@savaskarsitlari.org>: > Thank you. it works now. > > But what is the difference between > > from sqlalchemy.sql.expression import func > and > from sqlalchemy import func > > the second import is what I found out while experimenting with the query and > after I saw your reply, I tried your code and both works the same. > > > > > On 08-03-2012 12:39, Robert Forkel wrote: >> >> sqlalchemy.sql.expression.func may work for this: >> >> from sqlalchemy.sql.expression import func >> >> ... >> q_doc.filter(func.substring(model.Doc.FileNameStr, 22, 1)==search_str) >> ... >> >> 2012/3/8 Timuçin Kızılay<t...@savaskarsitlari.org>: >>> >>> I have a query contains SUBSTRING in where clause: >>> >>> Select top 100 * from _Doc >>> where SUBSTRING(_Doc.FileNameStr, 22, 1) = '2' >>> --- >>> This query runs on mssql but I need to use that query from sa. >>> I could not find anything like this in SA documentatin. >>> >>> Here is what I tried so far: >>> >>> q_doc = dbsession.query(model.Doc) >>> q_doc = q_doc.filter(model.Doc.DocID>= ilk).filter(model.Doc.DocID<= >>> son) >>> q_doc = q_doc.filter(model.Doc.FileNameStr[21] == search_str) >>> q_doc = q_doc.order_by(model.Doc.DocID) >>> >>> of course, that gives errors. >>> >>> >>> -- >>> 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. > -- 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.
