PG17 regress sanity: fix multi-1 diffs caused by PG17 optimizer enhancements #7769
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multi_router_planner_fast_path and query_single_shard_table Restore the expected DEBUG error messages from the router planner. In the case of query_single_shard_table the diffs are because of PG17's ability to pull up correlated ANY subqueries (*). The fix is to inhibit pull up with a volatile function. In the case of multi_router_planner and multi_router_planner_fast_path the diffs are because of PG17's ability to remove redundant IS (NOT) NULL expressions (**). The fix is to adjust the table definition so the column used for distribution is not marked NOT NULL. (*) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=9f1337639 (**) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=b262ad440
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Codecov ReportAll modified and coverable lines are covered by tests ✅
Additional details and impacted files@@ Coverage Diff @@
## naisila/pg17_support #7769 +/- ##
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- Coverage 89.62% 89.61% -0.01%
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Files 274 274
Lines 59689 59689
Branches 7446 7446
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- Hits 53495 53492 -3
- Misses 4065 4067 +2
- Partials 2129 2130 +1 |
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This commit restores the expected DEBUG error messages from the router planner in
multi_router_planner,multi_router_planner_fast_pathandquery_single_shard_table. In the case ofquery_single_shard_tablethe diffs are because of PG17's ability to pull up a correlated ANY subquery to a join (*) . The fix is to inhibit pull up with a volatile function.In the case of
multi_router_plannerandmulti_router_planner_fast_paththe diffs are because of PG17's ability to remove redundant IS (NOT) NULL expressions (**). The fix is to adjust the table definition so the column used for distribution is not marked NOT NULL.(*) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=9f1337639
(**) https://git.postgresql.org/gitweb/?p=postgresql.git;a=commitdiff;h=b262ad440