postgresql/contrib
Tom Lane 0276bbd623 Fix multiple bugs in contrib/pgstattuple's pgstatindex() function.
Dead or half-dead index leaf pages were incorrectly reported as live, as a
consequence of a code rearrangement I made (during a moment of severe brain
fade, evidently) in commit d287818eb5.

The index metapage was not counted in index_size, causing that result to
not agree with the actual index size on-disk.

Index root pages were not counted in internal_pages, which is inconsistent
compared to the case of a root that's also a leaf (one-page index), where
the root would be counted in leaf_pages.  Aside from that inconsistency,
this could lead to additional transient discrepancies between the reported
page counts and index_size, since it's possible for pgstatindex's scan to
see zero or multiple pages marked as BTP_ROOT, if the root moves due to
a split during the scan.  With these fixes, index_size will always be
exactly one page more than the sum of the displayed page counts.

Also, the index_size result was incorrectly documented as being measured in
pages; it's always been measured in bytes.  (While fixing that, I couldn't
resist doing some small additional wordsmithing on the pgstattuple docs.)

Including the metapage causes the reported index_size to not be zero for
an empty index.  To preserve the desired property that the pgstattuple
regression test results are platform-independent (ie, BLCKSZ configuration
independent), scale the index_size result in the regression tests.

The documentation issue was reported by Otsuka Kenji, and the inconsistent
root page counting by Peter Geoghegan; the other problems noted by me.
Back-patch to all supported branches, because this has been broken for
a long time.
2016-02-18 15:40:35 -05:00
..
adminpack Update copyright for 2015 2015-01-06 11:43:47 -05:00
auth_delay
auto_explain Rearrange explain.c's API so callers need not embed sizeof(ExplainState). 2015-01-15 13:39:33 -05:00
btree_gin pgindent run for 9.5 2015-05-23 21:35:49 -04:00
btree_gist Fix misc typos. 2015-09-05 11:36:18 +03:00
chkpass Avoid returning undefined bytes in chkpass_in(). 2015-02-14 12:20:56 -05:00
citext Fix incorrect declaration of citext's regexp_matches() functions. 2015-05-05 15:51:22 -04:00
cube Fix misc typos. 2015-09-05 11:36:18 +03:00
dblink Fix volatile-safety issue in dblink's materializeQueryResult(). 2015-01-26 15:17:33 -05:00
dict_int Update copyright for 2015 2015-01-06 11:43:47 -05:00
dict_xsyn Update copyright for 2015 2015-01-06 11:43:47 -05:00
earthdistance Improve speed of make check-world 2015-04-23 08:59:52 -04:00
file_fdw Allow foreign and custom joins to handle EvalPlanQual rechecks. 2015-12-08 12:54:33 -05:00
fuzzystrmatch Remove new coupling between NAMEDATALEN and MAX_LEVENSHTEIN_STRLEN. 2016-01-22 11:53:06 -05:00
hstore Fix IsValidJsonNumber() to notice trailing non-alphanumeric garbage. 2016-02-03 01:39:08 -05:00
hstore_plperl Use LOAD not actual code execution to pull in plpython library. 2016-01-11 20:06:47 -05:00
hstore_plpython Use LOAD not actual code execution to pull in plpython library. 2016-01-11 20:06:47 -05:00
intagg Fix typos in some error messages thrown by extension scripts when fed to psql. 2014-08-25 18:30:37 +02:00
intarray Prevent stack overflow in query-type functions. 2015-10-05 10:06:33 -04:00
isn contrib/isn now needs a .gitignore file. 2015-08-02 23:57:42 -04:00
lo Fix typos in some error messages thrown by extension scripts when fed to psql. 2014-08-25 18:30:37 +02:00
ltree Prevent stack overflow in query-type functions. 2015-10-05 10:06:33 -04:00
ltree_plpython Use LOAD not actual code execution to pull in plpython library. 2016-01-11 20:06:47 -05:00
oid2name
pageinspect Use materialize SRF mode in brin_page_items 2015-08-13 13:02:10 -03:00
passwordcheck Update copyright for 2015 2015-01-06 11:43:47 -05:00
pg_buffercache pgindent run for 9.5 2015-05-23 21:35:49 -04:00
pg_freespacemap Fix typos in some error messages thrown by extension scripts when fed to psql. 2014-08-25 18:30:37 +02:00
pg_prewarm Update copyright for 2015 2015-01-06 11:43:47 -05:00
pg_standby Make use of xlog_internal.h's macros in WAL-related utilities. 2015-07-02 10:36:18 +09:00
pg_stat_statements Improve contrib/pg_stat_statements' handling of garbage collection failure. 2015-10-04 17:58:30 -04:00
pg_trgm Move strategy numbers to include/access/stratnum.h 2015-05-15 17:03:16 -03:00
pgcrypto Add forgotten CHECK_FOR_INTERRUPT calls in pgcrypto's crypt() 2015-12-27 13:03:19 -03:00
pgrowlocks Optimize locking a tuple already locked by another subxact 2015-04-10 13:47:15 -03:00
pgstattuple Fix multiple bugs in contrib/pgstattuple's pgstatindex() function. 2016-02-18 15:40:35 -05:00
postgres_fdw postgres_fdw: Avoid possible misbehavior when RETURNING tableoid column only. 2016-02-04 22:27:38 -05:00
seg Move strategy numbers to include/access/stratnum.h 2015-05-15 17:03:16 -03:00
sepgsql Fix sepgsql regression tests. 2015-08-30 11:09:19 -07:00
spi Collection of typo fixes. 2015-05-20 16:56:22 +03:00
sslinfo Fix error message wording in previous sslinfo commit 2015-09-08 11:10:20 -03:00
start-scripts Fix typo in linux startup script. 2015-04-26 09:43:15 -04:00
tablefunc Fix a number of places that produced XX000 errors in the regression tests. 2015-08-02 23:49:19 -04:00
tcn Update copyright for 2015 2015-01-06 11:43:47 -05:00
test_decoding Message style improvements 2015-10-28 20:23:53 -04:00
tsearch2 Update copyright for 2015 2015-01-06 11:43:47 -05:00
tsm_system_rows Redesign tablesample method API, and do extensive code review. 2015-07-25 14:39:00 -04:00
tsm_system_time Some platforms now need contrib/tsm_system_time to be linked with libm. 2015-07-25 16:37:22 -04:00
unaccent Update copyright for 2015 2015-01-06 11:43:47 -05:00
uuid-ossp Update copyright for 2015 2015-01-06 11:43:47 -05:00
vacuumlo vacuumlo: Avoid unlikely memory leak. 2015-01-14 15:14:20 -05:00
xml2 Replace a bunch more uses of strncpy() with safer coding. 2015-01-24 13:05:42 -05:00
contrib-global.mk
Makefile Finish removing pg_audit 2015-05-28 12:48:25 -04:00
README

The PostgreSQL contrib tree
---------------------------

This subtree contains porting tools, analysis utilities, and plug-in
features that are not part of the core PostgreSQL system, mainly
because they address a limited audience or are too experimental to be
part of the main source tree.  This does not preclude their
usefulness.

User documentation for each module appears in the main SGML
documentation.

When building from the source distribution, these modules are not
built automatically, unless you build the "world" target.  You can
also build and install them all by running "make all" and "make
install" in this directory; or to build and install just one selected
module, do the same in that module's subdirectory.

Some directories supply new user-defined functions, operators, or
types.  To make use of one of these modules, after you have installed
the code you need to register the new SQL objects in the database
system by executing a CREATE EXTENSION command.  In a fresh database,
you can simply do

    CREATE EXTENSION module_name;

See the PostgreSQL documentation for more information about this
procedure.