The patch store hash code only in the index tuple.
It based on Neil Conway's patch with an old version of PostgreSQL.
It passes the regression test but I didn't test the performance yet.
Anyone interested can make a performance test;-)
You can undefine the macro HASHVALUE_ONLY in hash.h to get the
It's a preliminary implementation and I'm looking for input here.
Hope to hear from you.
DKERC, Harbin Institute of Technology, China
Description: text/x-diff (10.3 KB)
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