postgres

Commit Graph

Author	SHA1	Message	Date
Fujii Masao	17e0328224	Allow pg_stat_statements to track planning statistics. This commit makes pg_stat_statements support new GUC pg_stat_statements.track_planning. If this option is enabled, pg_stat_statements tracks the planning statistics of the statements, e.g., the number of times the statement was planned, the total time spent planning the statement, etc. This feature is useful to check the statements that it takes a long time to plan. Previously since pg_stat_statements tracked only the execution statistics, we could not use that for the purpose. The planning and execution statistics are stored at the end of each phase separately. So there are not always one-to-one relationship between them. For example, if the statement is successfully planned but fails in the execution phase, only its planning statistics are stored. This may cause the users to be able to see different pg_stat_statements results from the previous version. To avoid this, pg_stat_statements.track_planning needs to be disabled. This commit bumps the version of pg_stat_statements to 1.8 since it changes the definition of pg_stat_statements function. Author: Julien Rouhaud, Pascal Legrand, Thomas Munro, Fujii Masao Reviewed-by: Sergei Kornilov, Tomas Vondra, Yoshikazu Imai, Haribabu Kommi, Tom Lane Discussion: https://postgr.es/m/CAHGQGwFx_=DO-Gu-MfPW3VQ4qC7TfVdH2zHmvZfrGv6fQ3D-Tw@mail.gmail.com Discussion: https://postgr.es/m/CAEepm=0e59Y_6Q_YXYCTHZkqOc6H2pJ54C_Xe=VFu50Aqqp_sA@mail.gmail.com Discussion: https://postgr.es/m/DB6PR0301MB21352F6210E3B11934B0DCC790B00@DB6PR0301MB2135.eurprd03.prod.outlook.com	6 years ago
Andrew Gierth	6e74c64bcf	Teach pg_stat_statements not to ignore FOR UPDATE clauses Performance of a SELECT FOR UPDATE may be quite distinct from the non-UPDATE version of the query, so treat all of the FOR UPDATE clause as being significant for distinguishing queries. Andrew Gierth and Vik Fearing, reviewed by Sergei Kornilov, Thomas Munro, Tom Lane Discussion: https://postgr.es/m/87h8e4hfwv.fsf@news-spur.riddles.org.uk	6 years ago
Amit Kapila	43cbedab8f	Extend pg_stat_statements_reset to reset statistics specific to a particular user/db/query. The function pg_stat_statements_reset() is extended to accept userid, dbid, and queryid as input parameters. Now, it can discard the statistics gathered so far by pg_stat_statements corresponding to the specified userid, dbid, and queryid. If no parameter is specified or all the specified parameters have default value aka 0, it will discard all statistics as per the old behavior. The new behavior is useful to get the fresh statistics for a specific user/database/query without resetting all the existing statistics. Author: Haribabu Kommi, with few additional changes by me Reviewed-by: Michael Paquier, Amit Kapila and Fujii Masao Discussion: https://postgr.es/m/CAJrrPGcyh-gkFswyc6C661K6cknL0XkNqVT0sQt2mFNMR4HRKA@mail.gmail.com	7 years ago
Tom Lane	a6f22e8356	Show ignored constants as "$N" rather than "?" in pg_stat_statements. The trouble with the original choice here is that "?" is a valid (and indeed used) operator name, so that you could end up with ambiguous statement texts like "SELECT ? ? ?". With this patch, you instead see "SELECT $1 ? $2", which seems significantly more readable. The numbers used for this purpose begin after the last actual $N parameter in the particular query. The conflict with external parameters has its own potential for confusion of course, but it was agreed to be an improvement over the previous behavior. Lukas Fittl Discussion: https://postgr.es/m/CAP53PkxeaCuwYmF-A4J5z2-qk5fYFo5_NH3gpXGJJBxv1DMwEw@mail.gmail.com	9 years ago
Tom Lane	83f2061dd0	Teach contrib/pg_stat_statements to handle multi-statement commands better. Make use of the statement boundary info added by commit `ab1f0c822` to let pg_stat_statements behave more sanely when multiple SQL queries are jammed into one query string. It now records just the relevant part of the source string, not the whole thing, for each individual query. Even when no multi-statement strings are involved, users may notice small changes in the output: leading and trailing whitespace and semicolons will be stripped from statements, which did not happen before. Also, significantly expand pg_stat_statements' regression test script. Fabien Coelho, reviewed by Craig Ringer and Kyotaro Horiguchi, some mods by me Discussion: https://postgr.es/m/alpine.DEB.2.20.1612200926310.29821@lancre	9 years ago
Andres Freund	9be244dbe8	Add minimal set of regression tests for pg_stat_statements. While the set of covered functionality is fairly small, the added tests still are useful to get some basic buildfarm testing of pg_stat_statements itself, but also to exercise the lwlock tranch code on the buildfarm. Author: Amit Kapila, slightly editorialized by me Reviewed-By: Ashutosh Sharma, Andres Freund Discussion: <CAA4eK1JOjkdXYtHxh=2aDK4VgDtN-LNGKY_YqX0N=YEvuzQVWg@mail.gmail.com>	9 years ago

6 Commits (0d8c9c1210c44b36ec2efcb223a1dfbe897a3661)