SELECT geom, group, production_facs FROM south_america WHERE UPPER(municipio) IN ('ACRE', 'ADJUNTAS', 'AGUADA'); <clemens.bertschler@xxxxxxxxx> wrote in message news:1145741653.759727.38970@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx > Hi List > I have maybe an easy question but i do not find an answer, i have this > SQL query: > > SELECT geom,group,production_facs FROM south_america > WHERE municipio = '' > OR municipio = 'ACRE' > OR municipio = 'ADJUNTAS' > OR municipio = 'AGUADA' > > The performance of this query is quite worse as longer it gets, its > possible that this query gets over 20 to 30 OR comparisons, but then > the performance is really worse, is it possible to speed it up? > Thanks > Clemens >