Re: [HACKERS] Interesting behaviour !

> This might be a relatively simple bug to fix after all,
> but it needs more time to find exactly where things are going wrong...
> and I have to get some Real Work done...

Don't let me stop anyone from looking at this, but fyi this is the one
area I didn't yet touch for the "transparent type coersion" work I did
for v6.4 and which is still ongoing of course.

istm that wherever index use is evaluated one could allow
pre-evaluated functions on constants, rather than just strict
constants as is the case now. There is a precedent for pre-evaluation
of elements of the query tree.

If function calls are allowed, then we can try coercing constants
using these existing coersion functions, at least when the target
column is a "superset type" of the constant. You still run into
trouble for cases like

select intcol from table1 where intcol < 2.5;

- Thomas

--
Thomas Lockhart lockhart(at)alumni(dot)caltech(dot)edu
South Pasadena, California