postgres

Commit Graph

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.	23 years ago
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.	23 years ago
Tom Lane	1afac12910	Create a new file executor/execGrouping.c to centralize utility routines shared by nodeGroup, nodeAgg, and soon nodeSubplan.	23 years ago

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.

23 years ago

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.

23 years ago

Tom Lane

1afac12910

Create a new file executor/execGrouping.c to centralize utility routines

shared by nodeGroup, nodeAgg, and soon nodeSubplan.

23 years ago

3 Commits (82f18c4a2c7297f520051a50ee028d532a4b5ced)