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| author | Michael Paquier <michael@paquier.xyz> | 2018-07-01 15:10:10 +0900 |
|---|---|---|
| committer | Michael Paquier <michael@paquier.xyz> | 2018-07-01 15:10:10 +0900 |
| commit | 65782346a4812482bfb09f9e1117c908146e67b5 (patch) | |
| tree | 633e40cbd1669b1b6458a07cb9209aa7fb1bd591 /src/test/perl/PostgresNode.pm | |
| parent | feced1387f07c3fa6c47d36a68962750e6065486 (diff) | |
| download | postgresql-65782346a4812482bfb09f9e1117c908146e67b5.tar.gz postgresql-65782346a4812482bfb09f9e1117c908146e67b5.zip | |
Use optimized bitmap set function for membership test in postgres_fdw
Deparsing logic in postgres_fdw for locking, FROM clause (alias) and Var
(column qualification) does not need to know the exact number of members
involved, which can be calculated with bms_num_members(), but just if
there is more than one relation involved, which is what bms_membership()
does. The latter is more performant than the former so this shaves a
couple of cycles.
Author: Daniel Gustafsson
Reviewed-by: Ashutosh Bapat, Nathan Bossart
Discussion: https://postgr.es/m/C73594E0-2B67-4E10-BB35-CDE0E41CC384@yesql.se
Diffstat (limited to 'src/test/perl/PostgresNode.pm')
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