you have either "x != None" or "x != null()" or "x.isnot(None)", or "x.isnot(null()))"
a lot of choices! On Oct 1, 2014, at 5:51 PM, Jonathan Vanasco <[email protected]> wrote: > I'm just posting this to the group for search equity-- > > Until recently (2012, via this commit > https://bitbucket.org/zzzeek/sqlalchemy/issue/2544), the way recommended > several times in this group and stackoverflow to generate "IS NOT NULL" was > to use a column opreation: > > sq = sess.query(A.id.label('id')).filter(A.id.op('IS NOT')(None)) > > However, that will cause a sqlalchemy.exc.CompileError when print/compiling a > statement with "literal binds" > > # this will raise an error > print str(sq.statement.compile(dialect=postgresql.dialect(), > compile_kwargs={"literal_binds": True})) > > To get around that issue, these forms will all compile correctly: > > # 0.7.9 and later > sq = sess.query(A.id.label('id')).filter(A.id != None) > > # 0.7.8 and earlier > sq = sess.query(A.id.label('id')).filter(A.id.op('IS > NOT')(sqlalchemy.sql.expression.null())) > > > -- > You received this message because you are subscribed to the Google Groups > "sqlalchemy" group. > To unsubscribe from this group and stop receiving emails from it, send an > email to [email protected]. > To post to this group, send email to [email protected]. > Visit this group at http://groups.google.com/group/sqlalchemy. > For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups "sqlalchemy" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/sqlalchemy. For more options, visit https://groups.google.com/d/optout.
