[Qgis-user] Problems with data types in joined tables

[Goyo]

2013/3/13 Antonio Vico <avicomartin at gmail.com>:
> Create a view in not a solution in this case. Query can change and view only
> offer a "monolitic" query. If you want search different options with a view
> you can't.

If you are not afraid of SQL you can find this plugin useful:
http://underdark.wordpress.com/2011/05/25/fast-sql-layer-for-qgis/

It's in the QGIS official repository already.

Goyo