I'm trying to extend SQLA with a construct for using SQL Server's PIVOT functionality. I've written a class and a @compiles function to generate the query for this and this produces the correct query (e.g., given a sqlalchemy.Table and some Column objects it produces the right query).
My problem is that the return type is a string, not a sqlalchemy.sql.expression.Select like object, so I can't do something like x = Pivot(table.c.key_col, table.c.pivot_col, ['attribute1, 'attribute2'], from_query) y = sqlalchemy.select([x.c.attribute1]) After Googling around I really couldn't find any examples like this. The examples on the documentation page seem to also just produce strings (and are Executable rather than "Selectable" anyway). (Mainly http://www.sqlalchemy.org/trac/wiki/UsageRecipes and http://docs.sqlalchemy.org/en/rel_0_7/core/compiler.html) Anyone have some tips on how to make the above do-able? An explanation for how to produce any kind of custom select statement (that could then be selected from) would be fine. Or if this isn't possible currently please let me know. Thanks, Dan -- 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 sqlalchemy+unsubscr...@googlegroups.com. To post to this group, send email to sqlalchemy@googlegroups.com. Visit this group at http://groups.google.com/group/sqlalchemy?hl=en. For more options, visit https://groups.google.com/groups/opt_out.
