Mike Moran <[EMAIL PROTECTED]> writes:
> Hi. I have two existing tables, A and B. A has a 'varchar(1000)' field 
> and B has a 'text' field, each with btree indexes defined. When I do a 
> join between these, on this field, it seems to a hash join, as opposed 
> to using the indexes, as I might expect (I'm no postgres expert, btw).

> My question is: if I changed both fields to be text or varchar(1000) 
> then would the index be used?

Probably not, and in any case your assumption is mistaken.  Indexes are
not always the right way to join.

                        regards, tom lane

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