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3 commits

Author SHA1 Message Date
Tom Lane
bff0422b6c Revise hash join and hash aggregation code to use the same datatype- 
specific hash functions used by hash indexes, rather than the old
not-datatype-aware ComputeHashFunc routine.  This makes it safe to do
hash joining on several datatypes that previously couldn't use hashing.
The sets of datatypes that are hash indexable and hash joinable are now
exactly the same, whereas before each had some that weren't in the other.
 2003-06-22 22:04:55 +00:00
Tom Lane
19b886332a First cut at implementing IN (and NOT IN) via hashtables. There is 
more to be done yet, but this is a good start.
 2003-01-12 04:03:34 +00:00
Tom Lane
1afac12910 Create a new file executor/execGrouping.c to centralize utility routines 
shared by nodeGroup, nodeAgg, and soon nodeSubplan.
 2003-01-10 23:54:24 +00:00