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* Default values for function argumentsPeter Eisentraut2008-12-04
| | | | Pavel Stehule, with some tweaks by Peter Eisentraut
* Fix a couple of snapshot management bugs in the new ResourceOwner world:Alvaro Herrera2008-12-04
| | | | | | | | | | | non-writable large objects need to have their snapshots registered on the transaction resowner, not the current portal's, because it must persist until the large object is closed (which the portal does not). Also, ensure that the serializable snapshot is recorded by the transaction resource owner too, even when a subtransaction has changed the current resource owner before serializable is taken. Per bug reports from Pavan Deolasee.
* Utilize the visibility map in autovacuum, too. There was an oversight inHeikki Linnakangas2008-12-04
| | | | | | | | | the visibility map patch that because autovacuum always sets VacuumStmt->freeze_min_age, visibility map was never used for autovacuum, only for manually launched vacuums. This patch introduces a new scan_all field to VacuumStmt, indicating explicitly whether the visibility map should be used, or the whole relation should be scanned, to advance relfrozenxid. Anti-wraparound vacuums still need to scan all pages.
* Initialize GISTScanOpaque->qual_ok even if there is no conditions.Teodor Sigaev2008-12-04
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* Properly unregister OpenSSL callbacks when libpq is done withMagnus Hagander2008-12-03
| | | | | | | | | | | | | | it's connection. This is required for applications that unload the libpq library (such as PHP) in which case we'd otherwise have pointers to these functions when they no longer exist. This needs a bit more testing before we can consider a backpatch, so not doing that yet. In passing, remove unused functions in backend/libpq. Bruce Momjian and Magnus Hagander, per report and analysis by Russell Smith.
* Introduce visibility map. The visibility map is a bitmap with one bit perHeikki Linnakangas2008-12-03
| | | | | | | | | | | | | | | | | | heap page, where a set bit indicates that all tuples on the page are visible to all transactions, and the page therefore doesn't need vacuuming. It is stored in a new relation fork. Lazy vacuum uses the visibility map to skip pages that don't need vacuuming. Vacuum is also responsible for setting the bits in the map. In the future, this can hopefully be used to implement index-only-scans, but we can't currently guarantee that the visibility map is always 100% up-to-date. In addition to the visibility map, there's a new PD_ALL_VISIBLE flag on each heap page, also indicating that all tuples on the page are visible to all transactions. It's important that this flag is kept up-to-date. It is also used to skip visibility tests in sequential scans, which gives a small performance gain on seqscans.
* Small comment fixes.Heikki Linnakangas2008-12-03
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* If pg_stop_backup() is called just after switching to a new xlog file,Heikki Linnakangas2008-12-03
| | | | | | wait for the previous instead of the new file to be archived. Based on patch by Simon Riggs.
* Use PG_GETARG_TEXT_PP instead of PG_GETARG_TEXT_P in the newHeikki Linnakangas2008-12-02
| | | | | gin_cmp_tslexeme and gin_cmp_prefix functions. Should shave off a few cycles from GIN operations.
* Minor code embellishments.Alvaro Herrera2008-12-02
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* Fix an oversight in the code that makes transitive-equality deductions fromTom Lane2008-12-01
| | | | | | | | | | | | | | | | | | | | outer join clauses. Given, say, ... from a left join b on a.a1 = b.b1 where a.a1 = 42; we'll deduce a clause b.b1 = 42 and then mark the original join clause redundant (we can't remove it completely for reasons I don't feel like squeezing into this log entry). However the original implementation of that wasn't bulletproof, because clause_selectivity() wouldn't honor this_selec if given nonzero varRelid --- which in practice meant that it worked as desired *except* when considering index scan quals. Which resulted in bogus underestimation of the size of the indexscan result for an inner indexscan in an outer join, and consequently a possibly bad choice of indexscan vs. bitmap scan. Fix by introducing an explicit test into clause_selectivity(). Also, to make sure we don't trigger that test in corner cases, change the convention to be that this_selec > 1, not this_selec = 1, means it's been marked redundant. Per trouble report from Scara Maccai. Back-patch to 8.2, where the problem was introduced.
* Modify the new to_timestamp implementation so that end-of-format-stringHeikki Linnakangas2008-12-01
| | | | | | | | | | | is treated like a non-digit separator. This fixes the inconsistency in examples like: to_timestamp('2008-01-2', 'YYYY-MM-DD') -- didn't work and to_timestamp('2008-1-02', 'YYYY-MM-DD') -- did work
* Ensure that the contents of a holdable cursor don't depend on out-of-lineTom Lane2008-12-01
| | | | | | | | | | | toasted values, since those could get dropped once the cursor's transaction is over. Per bug #4553 from Andrew Gierth. Back-patch as far as 8.1. The bug actually exists back to 7.4 when holdable cursors were introduced, but this patch won't work before 8.1 without significant adjustments. Given the lack of field complaints, it doesn't seem worth the work (and risk of introducing new bugs) to try to make a patch for the older branches.
* Clean up the API for DestReceiver objects by eliminating the assumptionTom Lane2008-11-30
| | | | | | | | | | | | that a Portal is a useful and sufficient additional argument for CreateDestReceiver --- it just isn't, in most cases. Instead formalize the approach of passing any needed parameters to the receiver separately. One unexpected benefit of this change is that we can declare typedef Portal in a less surprising location. This patch is just code rearrangement and doesn't change any functionality. I'll tackle the HOLD-cursor-vs-toast problem in a follow-on patch.
* Add a "LIKE = typename" clause to CREATE TYPE for base types. This allowsTom Lane2008-11-30
| | | | | | | | | | | the basic representational details (typlen, typalign, typbyval, typstorage) to be copied from an existing type rather than listed explicitly in the CREATE TYPE command. The immediate reason for this is to provide a simple solution for add-on modules that want to define types represented as int8, float4, or float8: as of 8.4 the appropriate PASSEDBYVALUE setting is platform-specific and so it's hard for a SQL script to know what to do. This patch fixes the contrib/isn breakage reported by Rushabh Lathia.
* Remove inappropriate memory context switch in shutdown_MultiFuncCall().Tom Lane2008-11-30
| | | | | | | This was a thinko introduced in a patch from last February; it results in memory leakage if an SRF is shut down before the actual end of query, because subsequent code will be running in a longer-lived context than it's expecting to be.
* Make sure we give an appropriate user-facing error when attemptingTom Lane2008-11-29
| | | | | to drop a table that is referenced by an open cursor. Fix unstable ecpg regression test result that was produced by this oversight.
* My recent fix for semijoin planning didn't actually work for a semijoin with aTom Lane2008-11-28
| | | | | | RHS that can't be unique-ified --- join_is_legal has to check that before deciding to build a join, else we'll have an unimplementable joinrel. Per report from Greg Stark.
* Support regular expressions in pg_ident.conf.Magnus Hagander2008-11-28
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* Fix bug in the tsvector stats collection function, which caused a crash ifHeikki Linnakangas2008-11-27
| | | | the sample contains just a one tsvector, containing only one lexeme.
* Fix obsolete comment regarding FSM truncation.Heikki Linnakangas2008-11-27
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* Don't force creation of the FSM on searches. It will still be createdHeikki Linnakangas2008-11-27
| | | | | as soon as the first page fills up, and is marked as (almost) full, though.
* Drop CLI related features from the list, since we don't track the ODBCPeter Eisentraut2008-11-27
| | | | business in core.
* Mark features related to WITH/SELECT as supported.Peter Eisentraut2008-11-27
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* Fix #ifdeffed debugging code to work with relation forks.Heikki Linnakangas2008-11-27
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* Fix minor memory leak introduced in recent SQL-functions hacking: theTom Lane2008-11-27
| | | | | | DestReceiver created during postquel_start needs to be destroyed during postquel_end. In a moment of brain fade I had assumed this would be taken care of by FreeQueryDesc, but it's not (and shouldn't be).
* Rely on relcache invalidation to update the cached size of the FSM.Heikki Linnakangas2008-11-26
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* Feature F442 "Mixed column references in set functions" is supported.Peter Eisentraut2008-11-26
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* Add %expect 0 to all parser input files to prevent conflicts slipping by.Peter Eisentraut2008-11-26
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* Make DISCARD ALL discard advisory locks, too. Marko KreenTom Lane2008-11-26
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* Use ResourceOwners in the snapshot manager, instead of attempting to track themAlvaro Herrera2008-11-25
| | | | | | | | by hand. As an added bonus, the new code is smaller and more understandable, and the ugly loops are gone. This had been discussed all along but never implemented. It became clear that it really needed to be fixed after a bug report by Pavan Deolasee.
* CLUSTER VERBOSE and corresponding clusterdb --verbose optionPeter Eisentraut2008-11-24
| | | | Jim Cox and Peter Eisentraut
* Teach RequestCheckpoint() to wait and retry a few times if it can't signalTom Lane2008-11-23
| | | | | | | | the bgwriter immediately. This covers the case where the bgwriter is still starting up, as seen in a recent buildfarm failure. In future it might also assist with clean recovery after a bgwriter termination and restart --- right now the postmaster treats early bgwriter exit as a system crash, but that might not always be so.
* Switch the planner over to treating qualifications of a JOIN_SEMI join asTom Lane2008-11-22
| | | | | | | | | | | | | | | | | | | though it is an inner rather than outer join type. This essentially means that we don't bother to separate "pushed down" qual conditions from actual join quals at a semijoin plan node; which is okay because the restrictions of SQL syntax make it impossible to have a pushed-down qual that references the inner side of a semijoin. This allows noticeably better optimization of IN/EXISTS cases than we had before, since the equivalence-class machinery can now use those quals. Also fix a couple of other mistakes that had essentially disabled the ability to unique-ify the inner relation and then join it to just a subset of the left-hand relations. An example case using the regression database is select * from tenk1 a, tenk1 b where (a.unique1,b.unique2) in (select unique1,unique2 from tenk1 c); which is planned reasonably well by 8.3 and earlier but had been forcing a cartesian join of a/b in CVS HEAD.
* Fix a few more format argument warnings.Magnus Hagander2008-11-21
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* Make the enumvals column of pg_settings be text[] instead of justMagnus Hagander2008-11-21
| | | | a comma separated string.
* Use relation_expr for TABLE command, requested by Tom.Peter Eisentraut2008-11-21
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* Issue a proper error message when MD5 is attempted whenBruce Momjian2008-11-20
| | | | | | db_user_namespace is enabled. Also document this limitation.
* Fix breakage of bitmap scan plan creation for special index operators suchTom Lane2008-11-20
| | | | | | | | as LIKE. I oversimplified this code when removing support for plan-time determination of index operator lossiness back in April --- I had thought create_bitmap_subplan could stop returning two separate lists of qual conditions, but it still must so that we can treat special operators correctly in create_bitmap_scan_plan. Per report from Rushabh Lathia.
* TABLE commandPeter Eisentraut2008-11-20
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* Add support for using SSL client certificates to authenticate to theMagnus Hagander2008-11-20
| | | | database (only for SSL connections, obviously).
* Control client certificate requesting with the pg_hba option "clientcert"Magnus Hagander2008-11-20
| | | | instead of just relying on the root certificate file to be present.
* Rethink the way FSM truncation works. Instead of WAL-logging FSMHeikki Linnakangas2008-11-19
| | | | | | | | | | | | | | | truncations in FSM code, call FreeSpaceMapTruncateRel from smgr_redo. To make that cleaner from modularity point of view, move the WAL-logging one level up to RelationTruncate, and move RelationTruncate and all the related WAL-logging to new src/backend/catalog/storage.c file. Introduce new RelationCreateStorage and RelationDropStorage functions that are used instead of calling smgrcreate/smgrscheduleunlink directly. Move the pending rel deletion stuff from smgrcreate/smgrscheduleunlink to the new functions. This leaves smgr.c as a thin wrapper around md.c; all the transactional stuff is now in storage.c. This will make it easier to add new forks with similar truncation logic, like the visibility map.
* Fix compiler warning "res may be used uninitialized in this function".Teodor Sigaev2008-11-19
| | | | | Actually, it can't but some compilers are not smart enough. Per Peter Eisentraut gripe.
* Fix define_custom_variable so that SUSET custom variables behaveTom Lane2008-11-19
| | | | | somewhat reasonably. It's not perfect, but it beats the kluge proposed in the auto-explain patch ...
* Some infrastructure changes for the upcoming auto-explain contrib module:Tom Lane2008-11-19
| | | | | | | | | | | | | | | | | | | | | | * Refactor explain.c slightly to export a convenient-to-use subroutine for printing EXPLAIN results. * Provide hooks for plugins to get control at ExecutorStart and ExecutorEnd as well as ExecutorRun. * Add some minimal support for tracking the total runtime of ExecutorRun. This code won't actually do anything unless a plugin prods it to. * Change the API of the DefineCustomXXXVariable functions to allow nonzero "flags" to be specified for a custom GUC variable. While at it, also make the "bootstrap" default value for custom GUCs be explicitly specified as a parameter to these functions. This is to eliminate confusion over where the default comes from, as has been expressed in the past by some users of the custom-variable facility. * Refactor GUC code a bit to ensure that a custom variable gets initialized to something valid (like its default value) even if the placeholder value was invalid.
* Ident authentication over Unix-domain sockets on Solaris, usingPeter Eisentraut2008-11-18
| | | | | | getpeerucred() function. Author: Garick Hamlin <ghamlin@isc.upenn.edu>
* Replace plain-memory ordered array by binary tree in ts_stat() function.Teodor Sigaev2008-11-17
| | | | Performance is increased from 50% up to 10^3 times depending on data.
* Modify UPDATE/DELETE WHERE CURRENT OF to use the FOR UPDATE infrastructure toTom Lane2008-11-16
| | | | | | | locate the target row, if the cursor was declared with FOR UPDATE or FOR SHARE. This approach is more flexible and reliable than digging through the plan tree; for instance it can cope with join cursors. But we still provide the old code for use with non-FOR-UPDATE cursors. Per gripe from Robert Haas.
* Fix crash of xmlconcat(NULL)Peter Eisentraut2008-11-15
| | | | also backpatched to 8.3
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