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* Zero out vacuum_count and related counters in pgstat_recv_tabstat().Tom Lane2011-03-07
| | | | | | This fixes an oversight in commit 946045f04d11d246a834b917a2b8bc6e4f884a37 of 2010-08-21, as reported by Itagaki Takahiro. Also a couple of minor cosmetic adjustments.
* Begin error message with lower-case letter.Heikki Linnakangas2011-03-07
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* Silence compiler warning about undefined function when compiling withoutHeikki Linnakangas2011-03-07
| | | | assertions.
* Suppress some "variable might be clobbered by longjmp" warnings.Tom Lane2011-03-06
| | | | | | Seen with an older gcc version. I'm not sure these represent any real risk factor, but still a bit scary. Anyway we have lots of other volatile-marked variables in this code, so a couple more won't hurt.
* Add missing "static" marker to internal_ping().Tom Lane2011-03-06
| | | | Per testing with a compiler that doesn't like that.
* Dynamic array required within pg_stat_replication.Simon Riggs2011-03-07
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* Catversion increment for pg_stat_replication changes for syncrepSimon Riggs2011-03-06
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* Add new files for syncrep missed in previous commitSimon Riggs2011-03-06
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* Fix pg_dump's dump order for collations versus extensions.Tom Lane2011-03-06
| | | | | Mixing them together alphabetically won't be nice. Per my gripe of 2011-02-12.
* Efficient transaction-controlled synchronous replication.Simon Riggs2011-03-06
| | | | | | | | | | | | | | | | | | If a standby is broadcasting reply messages and we have named one or more standbys in synchronous_standby_names then allow users who set synchronous_replication to wait for commit, which then provides strict data integrity guarantees. Design avoids sending and receiving transaction state information so minimises bookkeeping overheads. We synchronize with the highest priority standby that is connected and ready to synchronize. Other standbys can be defined to takeover in case of standby failure. This version has very strict behaviour; more relaxed options may be added at a later date. Simon Riggs and Fujii Masao, with reviews by Yeb Havinga, Jaime Casanova, Heikki Linnakangas and Robert Haas, plus the assistance of many other design reviewers.
* Fix incorrect access to pg_index.indcollation.Tom Lane2011-03-06
| | | | | | | | | Since this field is after a variable-length field, it can't simply be accessed via the C struct for pg_index. Fortunately, the relcache already did the dirty work of pulling the information out to where it can be accessed easily, so this is a one-line fix. Andres Freund
* Fix parallel gmake for extension directory addition in PL languages.Bruce Momjian2011-03-05
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* Add PL extension files to MSVC Install procedure.Andrew Dunstan2011-03-05
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* Make plpythonu language use plpython2 shared library directly.Tom Lane2011-03-05
| | | | | | | | | The original scheme for this was to symlink plpython.$DLSUFFIX to plpython2.$DLSUFFIX, but that doesn't work on Windows, and only accidentally failed to fail because of the way that CREATE LANGUAGE created or didn't create new C functions. My changes of yesterday exposed the weakness of that approach. To fix, get rid of the symlink and make pg_pltemplate show what's really going on.
* Convert createlang/droplang to use CREATE/DROP EXTENSION.Tom Lane2011-03-05
| | | | | | | | | | In createlang this is a one-line change. In droplang there's a whole lot of cruft that can be discarded since the extension mechanism now manages removal of the language's support functions. Also, add deprecation notices to these two programs' reference pages, since per discussion we may toss them overboard altogether in a release or two.
* Update of SQL feature conformancePeter Eisentraut2011-03-05
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* Create extension infrastructure for the core procedural languages.Tom Lane2011-03-04
| | | | | | | | | | | | | | | | | | | | This mostly just involves creating control, install, and update-from-unpackaged scripts for them. However, I had to adjust plperl and plpython to not share the same support functions between variants, because we can't put the same function into multiple extensions. catversion bump forced due to new contents of pg_pltemplate, and because initdb now installs plpgsql as an extension not a bare language. Add support for regression testing these as extensions not bare languages. Fix a couple of other issues that popped up while testing this: my initial hack at pg_dump binary-upgrade support didn't work right, and we don't want an extra schema permissions test after all. Documentation changes still to come, but I'm committing now to see whether the MSVC build scripts need work (likely they do).
* Refactor seclabel.c to use the new check_object_ownership function.Robert Haas2011-03-04
| | | | | This avoids duplicate (and not-quite-matching) code, and makes the logic for SECURITY LABEL match COMMENT and ALTER EXTENSION ADD/DROP.
* Don't allow CREATE TABLE AS to create a column with invalid collationPeter Eisentraut2011-03-04
| | | | | | | | | It is possible that an expression ends up with a collatable type but without a collation. CREATE TABLE AS could then create a table based on that. But such a column cannot be dumped with valid SQL syntax, so we disallow creating such a column. per test report from Noah Misch
* Allow non-superusers to create (some) extensions.Tom Lane2011-03-04
| | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the unconditional superuser permissions check in CREATE EXTENSION, and instead define a "superuser" extension property, which when false (not the default) skips the superuser permissions check. In this case the calling user only needs enough permissions to execute the commands in the extension's installation script. The superuser property is also enforced in the same way for ALTER EXTENSION UPDATE cases. In other ALTER EXTENSION cases and DROP EXTENSION, test ownership of the extension rather than superuserness. ALTER EXTENSION ADD/DROP needs to insist on ownership of the target object as well; to do that without duplicating code, refactor comment.c's big switch for permissions checks into a separate function in objectaddress.c. I also removed the superuserness checks in pg_available_extensions and related functions; there's no strong reason why everybody shouldn't be able to see that info. Also invent an IF NOT EXISTS variant of CREATE EXTENSION, and use that in pg_dump, so that dumps won't fail for installed-by-default extensions. We don't have any of those yet, but we will soon. This is all per discussion of wrapping the standard procedural languages into extensions. I'll make those changes in a separate commit; this is just putting the core infrastructure in place.
* When creating a collation, check that the locales can be loadedPeter Eisentraut2011-03-04
| | | | | | This is the same check that would happen later when the collation is used, but it's friendlier to check the collation already when it is created.
* In initialize_SSL, don't fail unnecessarily when home dir is unavailable.Tom Lane2011-03-04
| | | | | | | | | | Instead, just act as though the certificate file(s) are not present. There is only one case where this need be a hard failure condition: when sslmode is verify-ca or verify-full, not having a root cert file is an error. Change the logic so that we complain only in that case, and otherwise fall through cleanly. This is how it used to behave pre-9.0, but my patch 4ed4b6c54e5fab24ab2624d80e26f7546edc88ad of 2010-05-26 broke the case. Per report from Christian Kastner.
* You must hold a lock on the heap page when you callHeikki Linnakangas2011-03-04
| | | | | | CheckForSerializableConflictOut(), because it can set hint bits. YAMAMOTO Takashi
* Add a comment explaining the recent fix for plpython breakage in commit 4c966d9.Andrew Dunstan2011-03-03
| | | | Mostly text supplied by Jan Urbański.
* Further refine patch for commenting operator implementation functions.Tom Lane2011-03-03
| | | | | | | | Instead of manually maintaining the "implementation of XXX operator" comments in pg_proc.h, delete all those entries and let initdb create them via a join. To let initdb figure out which name to use when there is a conflict, change the comments for deprecated operators to say they are deprecated --- which seems like a good thing to do anyway.
* Run a portal's cleanup hook immediately when pushing it to DONE state.Tom Lane2011-03-03
| | | | | | | | | This works around the problem noted by Yamamoto Takashi in bug #5906, that there were code paths whereby we could reach AtCleanup_Portals with a portal's cleanup hook still unexecuted. The changes I made a few days ago were intended to prevent that from happening, and I think that on balance it's still a good thing to avoid, so I don't want to remove the Assert in AtCleanup_Portals. Hence do this instead.
* Added new version of ecpg's parser generator script. This one was written byMichael Meskes2011-03-03
| | | | Andy Colson <andy@squeakycode.net>.
* Add tab-completion for table name after JOIN.Heikki Linnakangas2011-03-03
| | | | Andrey Popp
* Mark operator implementation functions as such in their comments.Tom Lane2011-03-03
| | | | | | | | | | | | | | | | | | | | | | | Historically, we've not had separate comments for built-in pg_operator entries, but relied on the comments for the underlying functions. The trouble with this approach is that there isn't much of anything to suggest to users that they'd be better off using the operators instead. So, move all the relevant comments into pg_operator, and give each underlying function a comment that just says "implementation of XXX operator". There are only about half a dozen cases where it seems reasonable to use the underlying function interchangeably with the operator; in these cases I left the same comment in place on the function as on the operator. While at it, establish a policy that every built-in function and operator entry should have a comment: there are now queries in the opr_sanity regression test that will complain if one doesn't. This only required adding a dozen or two more entries than would have been there anyway. I also spent some time trying to eliminate gratuitous inconsistencies in the style of the comments, though it's hopeless to suppose that more won't creep in soon enough. Per my proposal of 2010-10-15.
* Add collations to information_schema.usage_privilegesPeter Eisentraut2011-03-02
| | | | This is faked information like for domains.
* Fix plpython breakage detected on certain Fedora machines on buildfarm.Andrew Dunstan2011-03-01
| | | | Patch from Jan Urbański.
* Additional PL/Python regression test expected filePeter Eisentraut2011-03-01
| | | | | plpython_subtransaction test needs a separate expected file specifically for Python 2.5.
* Change pg_last_xlog_receive_location() not to move backwards. That makesHeikki Linnakangas2011-03-01
| | | | | | | | | | it a lot more useful for determining which standby is most up-to-date, for example. There was long discussions on whether overwriting existing existing WAL makes sense to begin with, and whether we should do some more extensive variable renaming, but this change nevertheless seems quite uncontroversial. Fujii Masao, reviewed by Jeff Janes, Robert Haas, Stephen Frost.
* Fix bugs in Serializable Snapshot Isolation.Heikki Linnakangas2011-03-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | Change the way UPDATEs are handled. Instead of maintaining a chain of tuple-level locks in shared memory, copy any existing locks on the old tuple to the new tuple at UPDATE. Any existing page-level lock needs to be duplicated too, as a lock on the new tuple. That was neglected previously. Store xmin on tuple-level predicate locks, to distinguish a lock on an old already-recycled tuple from a new tuple at the same physical location. Failure to distinguish them caused loops in the tuple-lock chains, as reported by YAMAMOTO Takashi. Although we don't use the chain representation of UPDATEs anymore, it seems like a good idea to store the xmin to avoid some false positives if no other reason. CheckSingleTargetForConflictsIn now correctly handles the case where a lock that's being held is not reflected in the local lock table. That happens if another backend acquires a lock on our behalf due to an UPDATE or a page split. PredicateLockPageCombine now retains locks for the page that is being removed, rather than removing them. This prevents a potentially dangerous false-positive inconsistency where the local lock table believes that a lock is held, but it is actually not. Dan Ports and Kevin Grittner
* Dump the COLLATABLE attribute in CREATE TYPEPeter Eisentraut2011-03-01
| | | | This was previously omitted by accident.
* Include the target table in EXPLAIN output for ModifyTable nodes.Tom Lane2011-03-01
| | | | | | | | | | Per discussion, this seems important for plans involving writable CTEs, since there can now be more than one ModifyTable node in the plan. To retain the same formatting as for target tables of scan nodes, we show only one target table, which will be the parent table in case of an UPDATE or DELETE on an inheritance tree. Individual child tables can be determined by inspecting the child plan trees if needed.
* Avoid excessive Hot Standby feedback messages.Robert Haas2011-03-01
| | | | | | | | Without this patch, when wal_receiver_status_interval=0, indicating that no status messages should be sent, Hot Standby feedback messages are instead sent extremely frequently. Fujii Masao, with documentation changes by me.
* Rearrange snapshot handling to make rule expansion more consistent.Tom Lane2011-02-28
| | | | | | | | | | | | | | | | | | | | | With this patch, portals, SQL functions, and SPI all agree that there should be only a CommandCounterIncrement between the queries that are generated from a single SQL command by rule expansion. Fetching a whole new snapshot now happens only between original queries. This is equivalent to the existing behavior of EXPLAIN ANALYZE, and it was judged to be the best choice since it eliminates one source of concurrency hazards for rules. The patch should also make things marginally faster by reducing the number of snapshot push/pop operations. The patch removes pg_parse_and_rewrite(), which is no longer used anywhere. There was considerable discussion about more aggressive refactoring of the query-processing functions exported by postgres.c, but for the moment nothing more has been done there. I also took the opportunity to refactor snapmgr.c's API slightly: the former PushUpdatedSnapshot() has been split into two functions. Marko Tiikkaja, reviewed by Steve Singer and Tom Lane
* Unbreak vpath builds broken by commit 474a42473adf9b18417242f1fc0691a857ec578b.Andrew Dunstan2011-02-28
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* Rename pg_stat_replication.apply_location to replay_location.Robert Haas2011-02-28
| | | | For consistency with pg_last_xlog_replay_location. Per discussion.
* Fix regression tests after PL/Python custom SPI exceptions patchPeter Eisentraut2011-02-28
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* PL/Python custom SPI exceptionsPeter Eisentraut2011-02-28
| | | | | | | | This provides a separate exception class for each error code that the backend defines, as well as the ability to get the SQLSTATE from the exception object. Jan Urbański, reviewed by Steve Singer
* PL/Python explicit subtransactionsPeter Eisentraut2011-02-27
| | | | | | | Adds a context manager, obtainable by plpy.subtransaction(), to run a group of statements in a subtransaction. Jan Urbański, reviewed by Steve Singer, additional scribbling by me
* Remove remaining expected file for Python 2.2Peter Eisentraut2011-02-27
| | | | | | | We don't have complete expected coverage for Python 2.2 anyway, so it doesn't seem worth keeping this one around that no one appears to be updating anyway. Visual inspection of the differences ought to be good enough for those few who care about this obsolete Python version.
* Refactor the executor's API to support data-modifying CTEs better.Tom Lane2011-02-27
| | | | | | | | | | | | | | | | | | | | | | The originally committed patch for modifying CTEs didn't interact well with EXPLAIN, as noted by myself, and also had corner-case problems with triggers, as noted by Dean Rasheed. Those problems show it is really not practical for ExecutorEnd to call any user-defined code; so split the cleanup duties out into a new function ExecutorFinish, which must be called between the last ExecutorRun call and ExecutorEnd. Some Asserts have been added to these functions to help verify correct usage. It is no longer necessary for callers of the executor to call AfterTriggerBeginQuery/AfterTriggerEndQuery for themselves, as this is now done by ExecutorStart/ExecutorFinish respectively. If you really need to suppress that and do it for yourself, pass EXEC_FLAG_SKIP_TRIGGERS to ExecutorStart. Also, refactor portal commit processing to allow for the possibility that PortalDrop will invoke user-defined code. I think this is not actually necessary just yet, since the portal-execution-strategy logic forces any non-pure-SELECT query to be run to completion before we will consider committing. But it seems like good future-proofing.
* Be less detailed about reporting shared memory failure by avoiding theBruce Momjian2011-02-27
| | | | | output of actual Postgres parameter _values_ related to shared memory, and suggesting that these are only possible parameters to reduce.
* Fix verbose display of REPLICATION role attributeMagnus Hagander2011-02-27
| | | | Josh Kupershmidt
* Increase the default for wal_sender_delay from 200ms to 1s. Now that WALHeikki Linnakangas2011-02-26
| | | | | sender is immediately woken up by transaction commit, there's no need to wake up so aggressively.
* Table function support for PL/PythonPeter Eisentraut2011-02-26
| | | | | | | This allows functions with multiple OUT parameters returning both one or multiple records (RECORD or SETOF RECORD). Jan Urbański, reviewed by Hitoshi Harada
* Fix order of shutdown processing when CTEs contain inter-references.Tom Lane2011-02-25
| | | | | | We need ExecutorEnd to run the ModifyTable nodes to completion in reverse order of initialization, not forward order. Easily done by constructing the list back-to-front.
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