On Mon, Sep 03, 2007 at 05:20:34PM -0700, Ben Tilly wrote: > > That raises a very random thought. One of the nicer features of > Oracle is the ability to have function-based indexes. So you could > index, say, trim(lower(person.name)). There are a *lot* of practical > situations where that comes in handy. The best workaround that I can > think of for not having that is to have a column defined to hold the > result of the function, maintain that column with a trigger, then > index that column. Which works, but is inelegant. (It also requires > storing completely redundant data.) > > Is there any prospect of postgres aquiring that functionality? > > Ben > I believe that PostgreSQL already supports functional indexes. In fact, one suggestion to address the egregiously poor performance of the current hash index was to replace it with a functional index.
Regards, Ken ---------------------------(end of broadcast)--------------------------- TIP 5: don't forget to increase your free space map settings
