mirror of
https://git.postgresql.org/git/postgresql.git
synced 2024-10-01 19:01:20 +02:00
30833ba154
Previously, we expanded the inheritance hierarchy in the order in which find_all_inheritors had locked the tables, but that turns out to block quite a bit of useful optimization. For example, a partition-wise join can't count on two tables with matching bounds to get expanded in the same order. Where possible, this change results in expanding partitioned tables in *bound* order. Bound order isn't well-defined for a list-partitioned table with a null-accepting partition or for a list-partitioned table where the bounds for a single partition are interleaved with other partitions. However, when expansion in bound order is possible, it opens up further opportunities for optimization, such as strength-reducing MergeAppend to Append when the expansion order matches the desired sort order. Patch by me, with cosmetic revisions by Ashutosh Bapat. Discussion: http://postgr.es/m/CA+TgmoZrKj7kEzcMSum3aXV4eyvvbh9WD=c6m=002WMheDyE3A@mail.gmail.com |
||
|---|---|---|
| .. | ||
| data | ||
| expected | ||
| input | ||
| output | ||
| sql | ||
| .gitignore | ||
| GNUmakefile | ||
| Makefile | ||
| parallel_schedule | ||
| pg_regress_main.c | ||
| pg_regress.c | ||
| pg_regress.h | ||
| README | ||
| regress.c | ||
| regressplans.sh | ||
| resultmap | ||
| serial_schedule | ||
| standby_schedule | ||
Documentation concerning how to run these regression tests and interpret the results can be found in the PostgreSQL manual, in the chapter "Regression Tests".