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| author | Peter Eisentraut <peter@eisentraut.org> | 2020-11-18 07:58:37 +0100 |
|---|---|---|
| committer | Peter Eisentraut <peter@eisentraut.org> | 2020-11-18 08:29:50 +0100 |
| commit | 6dd8b00807871bfd0c3ce8e18fd1f6ba1a71fbf9 (patch) | |
| tree | 33b0098c619430ef288331fa637c442899bbb8b7 /src/backend/executor/nodeHashjoin.c | |
| parent | bf0aa7c4b83bcf3116c5a3c191bbc677ab3beb59 (diff) | |
| download | postgresql-6dd8b00807871bfd0c3ce8e18fd1f6ba1a71fbf9.tar.gz postgresql-6dd8b00807871bfd0c3ce8e18fd1f6ba1a71fbf9.zip | |
Add more tests for hashing and hash-based plans
- Test hashing of an array of a non-hashable element type.
- Test UNION [DISTINCT] with hash- and sort-based plans. (Previously,
only INTERSECT and EXCEPT where tested there.)
- Test UNION [DISTINCT] with a non-hashable column type. This
currently reverts to a sort-based plan even if enable_hashagg is on.
- Test UNION/INTERSECT/EXCEPT hash- and sort-based plans with arrays
as column types. Also test an array with a non-hashable element
type.
- Test UNION/INTERSECT/EXCEPT similarly with row types as column
types. Currently, this uses only sort-based plans because there is
no hashing support for row types.
- Add a test case that shows that recursive queries using UNION
[DISTINCT] require hashable column types.
- Add a currently failing test that uses UNION DISTINCT in a
cycle-detection use case using row types as column types.
Discussion: https://www.postgresql.org/message-id/flat/38eccd35-4e2d-6767-1b3c-dada1eac3124%402ndquadrant.com
Diffstat (limited to 'src/backend/executor/nodeHashjoin.c')
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