[HACKERS] hacking postgres hashjoin algorithm

[HS]

Hello there

I am trying to play around with the hashjoin algorithm in postgres.
I am using the statement like
Select count(*) from r,s where r.id=s.id;

I looked at the function ExecHashJoin() in nodeHashjoin.c and cannot 
find where the algorithm is comparing if r.id equals s.id

please advise.

Regards
hal

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