"Joshua D. Drake" <[EMAIL PROTECTED]> writes:
> Would it be worthwhile to add a switch so that the foreign key test is 
> only used "if" they use the switch in conjunction with a -i?

I wouldn't object to providing that as a (non default) option.

The int8 change should be unnecessary in view of Tatsuo's recent fix
to make the random deltas symmetrical about zero.  I would counsel
against making the other changes either, as they seem to accomplish
little except make the comparability of results more doubtful.

                        regards, tom lane

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TIP 9: In versions below 8.0, the planner will ignore your desire to
       choose an index scan if your joining column's datatypes do not

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