mirror of
https://github.com/postgres/postgres.git
synced 2026-03-31 23:07:04 -04:00
0f4c170cf3
Save the range table indexes of result relations and row mark relations in separate bitmapsets in the PlannedStmt. Precomputing them allows cheap membership checks during execution. Together, these two groups approximate all relations that will be modified by a query. This includes relations targeted by INSERT, UPDATE, DELETE, and MERGE as well as relations with any row mark (like SELECT FOR UPDATE). Future work will use information on whether or not a relation is modified by a query in a heuristic. PlannedStmt->resultRelations is only used in a membership check, so it will be removed in a separate commit. Author: Melanie Plageman <melanieplageman@gmail.com> Reviewed-by: Andres Freund <andres@anarazel.de> Reviewed-by: David Rowley <dgrowleyml@gmail.com> Reviewed-by: Chao Li <li.evan.chao@gmail.com> Discussion: https://postgr.es/m/F5CDD1B5-628C-44A1-9F85-3958C626F6A9%40gmail.com |
||
|---|---|---|
| .. | ||
| backend | ||
| bin | ||
| common | ||
| fe_utils | ||
| include | ||
| interfaces | ||
| makefiles | ||
| pl | ||
| port | ||
| template | ||
| test | ||
| timezone | ||
| tools | ||
| tutorial | ||
| .gitignore | ||
| DEVELOPERS | ||
| Makefile | ||
| Makefile.global.in | ||
| Makefile.shlib | ||
| meson.build | ||
| nls-global.mk | ||