PostgreSQL Server <[EMAIL PROTECTED]> writes:
> I found that the only way to force postgres to use index is:

> explain select id,datarx::date from docs where datarx between '2002-11-13' and 
>'2002-11-14' ;

> Index Scan using idx_documenti_datarx on documenti  (cost=0.00..7.86 rows=2 width=12)

Given the small cost estimates, you either are testing on a toy table,
or you have not run ANALYZE since loading up the table.

                        regards, tom lane

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