4 Commits (8b89a88618dff78dec25f08ee0ca83824b69b34b)

Author	SHA1	Message	Date
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