aboutsummaryrefslogtreecommitdiff
path: root/src/backend/executor/execQual.c
Commit message (Collapse)AuthorAge
* Create a new expression node type RelabelType, which exists solely toTom Lane2000-02-20
| | | | | | | | | | represent the result of a binary-compatible type coercion. At runtime it just evaluates its argument --- but during type resolution, exprType will pick up the output type of the RelabelType node instead of the type of the argument. This solves some longstanding problems with dropped type coercions, an example being 'select now()::abstime::int4' which used to produce date-formatted output, not an integer, because the coercion to int4 was dropped on the floor.
* Add:Bruce Momjian2000-01-26
| | | | | | * Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
* Fix handling of NULL constraint conditions: per SQL92 spec, a NULL resultTom Lane2000-01-19
| | | | | | | | | from a constraint condition does not violate the constraint (cf. discussion on pghackers 12/9/99). Implemented by adding a parameter to ExecQual, specifying whether to return TRUE or FALSE when the qual result is really NULL in three-valued boolean logic. Currently, ExecRelCheck is the only caller that asks for TRUE, but if we find any other places that have the wrong response to NULL, it'll be easy to fix them.
* Make number of args to a function configurable.Bruce Momjian2000-01-10
|
* Fix ExecSubPlan to handle nulls per the SQL spec --- it didn't combineTom Lane1999-11-12
| | | | | | | nulls with non-nulls using proper three-valued boolean logic. Also clean up ExecQual to make it clearer that ExecQual *does* follow the SQL spec for boolean nulls. See '[BUGS] (null) != (null)' thread around 10/26/99 for more detail.
* Remove a no-longer-needed kluge for degenerate aggregate cases,Tom Lane1999-10-08
| | | | and update some comments.
* Modify nodeAgg.c so that no rows are returned for a GROUP BYTom Lane1999-09-26
| | | | | | | | with no input rows, per pghackers discussions around 7/22/99. Clean up a bunch of ugly coding while at it; remove redundant re-lookup of aggregate info at start of each new GROUP. Arrange to pfree intermediate values when they are pass-by-ref types, so that aggregates on pass-by-ref types no longer eat memory. This takes care of a couple of TODO items...
* Implement constant-expression simplification per BernardTom Lane1999-09-26
| | | | | | | | | | | Frankpitt, plus some improvements from yours truly. The simplifier depends on the proiscachable field of pg_proc to tell it whether a function is safe to pre-evaluate --- things like nextval() are not, for example. Update pg_proc.h to contain reasonable cacheability information; as of 6.5.* hardly any functions were marked cacheable. I may have erred too far in the other direction; see recent mail to pghackers for more info. This update does not force an initdb, exactly, but you won't see much benefit from the simplifier until you do one.
* Several changes here, not very related but touching some of the same files.Tom Lane1999-09-24
| | | | | | | | | | | | | | | | | | | | | * Buffer refcount cleanup (per my "progress report" to pghackers, 9/22). * Add links to backend PROC structs to sinval's array of per-backend info, and use these links for routines that need to check the state of all backends (rather than the slow, complicated search of the ShmemIndex hashtable that was used before). Add databaseOID to PROC structs. * Use this to implement an interlock that prevents DESTROY DATABASE of a database containing running backends. (It's a little tricky to prevent a concurrently-starting backend from getting in there, since the new backend is not able to lock anything at the time it tries to look up its database in pg_database. My solution is to recheck that the DB is OK at the end of InitPostgres. It may not be a 100% solution, but it's a lot better than no interlock at all...) * In ALTER TABLE RENAME, flush buffers for the relation before doing the rename of the physical files, to ensure we don't get failures later from mdblindwrt(). * Update TRUNCATE patch so that it actually compiles against current sources :-(. You should do "make clean all" after pulling these changes.
* Fix CASE bug identified by Keith Parks: CASE didn't reliablyTom Lane1999-09-18
| | | | | treat a NULL condition result as FALSE. Clean up some bogus comments here and there, too.
* Rewrite parser's handling of INSERT ... SELECT so that processingTom Lane1999-07-19
| | | | | | | | | of the SELECT part of the statement is just like a plain SELECT. All INSERT-specific processing happens after the SELECT parsing is done. This eliminates many problems, e.g. INSERT ... SELECT ... GROUP BY using the wrong column labels. Ensure that DEFAULT clauses are coerced to the target column type, whether or not stored clause produces the right type. Substantial cleanup of parser's array support.
* Move some system includes into c.h, and remove duplicates.Bruce Momjian1999-07-17
|
* Final cleanup.Bruce Momjian1999-07-16
|
* Remove unused #includes in *.c files.Bruce Momjian1999-07-15
|
* Clean up #include in /include directory. Add scripts for checking includes.Bruce Momjian1999-07-15
|
* When targetlist is NULL, ExecTargetList was passing back aTom Lane1999-06-12
| | | | | | | | pointer to palloc'd but uninitialized memory. This is not cool; anyone looking at the returned 'tuple' would at best coredump and at worst behave in a bizarre and irreproducible way. Fix it to return a predictable value, namely a correctly-set-up palloc'd tuple containing zero attributes. I believe this fix is both safe and critical.
* Another pgindent run. Sorry folks.Bruce Momjian1999-05-25
|
* pgindent run over code.Bruce Momjian1999-05-25
|
* cleanupBruce Momjian1999-03-20
|
* Fix for memory leak in executor with fjIsNull.Bruce Momjian1999-03-19
|
* CleanupBruce Momjian1999-03-14
|
* We have to return dummy tuple for empty targetlist!Vadim B. Mikheev1999-03-10
| | | | | | Try select t1.x from t1, t2 where t1.y = 1 and t2.y = 1 - t2 scan target list will be empty and so no one tuple will be returned...
* Fix typos in comments.Thomas G. Lockhart1999-02-23
|
* comment cleanup.Bruce Momjian1999-02-22
|
* From: Tatsuo Ishii <t-ishii@sra.co.jp>Marc G. Fournier1999-02-21
| | | | | | Ok. I made patches replacing all of "#if FALSE" or "#if 0" to "#ifdef NOT_USED" for current. I have tested these patches in that the postgres binaries are identical.
* Change my-function-name-- to my_function_name, and optimizer renames.Bruce Momjian1999-02-13
|
* Cleanup of source files where 'return' or 'var =' is alone on a line.Bruce Momjian1999-02-03
|
* Agg/Aggreg cleanup and datetime.sql patch.Bruce Momjian1999-01-25
|
* Rename Aggreg to Aggref.Bruce Momjian1999-01-24
|
* Implement CASE expression.Thomas G. Lockhart1998-12-04
|
* New HeapTuple structure/interface.Vadim B. Mikheev1998-11-27
|
* Clean up existing debugging print statements.Thomas G. Lockhart1998-09-25
| | | | Modify comment blocks to insulate from pgindent.
* OK, folks, here is the pgindent output.Bruce Momjian1998-09-01
|
* Renaming cleanup, no pgindent yet.Bruce Momjian1998-09-01
|
* Allow index use with OR clauses.Bruce Momjian1998-08-01
|
* Remove un-needed braces around single statements.Bruce Momjian1998-06-15
|
* Remove fork()/exec() and only do fork(). Small cleanups.Bruce Momjian1998-05-29
|
* This patch...Bruce Momjian1998-04-27
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 1. Removes the unnecessary "#define AbcRegProcedure 123"'s from pg_proc.h. 2. Changes those #defines to use the names already defined in fmgr.h. 3. Forces the make of fmgr.h in backend/Makefile instead of having it made as a dependency in access/common/Makefile *hack*hack*hack* 4. Rearranged the #includes to a less helter-skelter arrangement, also changing <file.h> to "file.h" to signify a non-system header. 5. Removed "pg_proc.h" from files where its only purpose was for the #defines removed in item #1. 6. Added "fmgr.h" to each file changed for completeness sake. Turns out that #6 was not necessary for some files because fmgr.h was being included in a roundabout way SIX levels deep by the first include. "access/genam.h" ->"access/relscan.h" ->"utils/rel.h" ->"access/strat.h" ->"access/skey.h" ->"fmgr.h" So adding fmgr.h really didn't add anything to the compile, hopefully just made it clearer to the programmer. S Darren.
* Re-apply Darren's char2-16 removal code.Bruce Momjian1998-04-26
|
* Back out char2-char16 removal. Add later.Bruce Momjian1998-04-07
|
* The following uuencoded, gzip'd file will ...Bruce Momjian1998-03-30
| | | | | | | | | | | 1. Remove the char2, char4, char8 and char16 types from postgresql 2. Change references of char16 to name in the regression tests. 3. Rename the char16.sql regression test to name.sql. 4. Modify the regression test scripts and outputs to match up. Might require new regression.{SYSTEM} files... Darren King
* I started adding the Having Clause and it works quite fine forBruce Momjian1998-03-30
| | | | | | | | | | | | | | | | | | | | | | | | sequential scans! (I think it will also work with hash, index, etc but I did not check it out! I made some High level changes which should work for all access methods, but maybe I'm wrong. Please let me know.) Now it is possible to make queries like: select s.sname, max(p.pid), min(p.pid) from part p, supplier s where s.sid=p.sid group by s.sname having max(pid)=6 and min(pid)=1 or avg(pid)=4; Having does not work yet for queries that contain a subselect statement in the Having clause, I'll try to fix this in the next days. If there are some bugs, please let me know, I'll start to read the mailinglists now! Now here is the patch against the original 6.3 version (no snapshot!!): Stefan
* pgindent run before 6.3 release, with Thomas' requested changes.Bruce Momjian1998-02-26
|
* Support for subselects.Vadim B. Mikheev1998-02-13
| | | | | | | ExecReScan for nodeAgg, nodeHash, nodeHashjoin, nodeNestloop and nodeResult. Fixed ExecReScan for nodeMaterial. Get rid of #ifdef INDEXSCAN_PATCH. Get rid of ExecMarkPos and ExecRestrPos in nodeNestloop.
* Inline fastgetattr and others so data access does not use functionBruce Momjian1998-01-31
| | | | calls.
* Thank god for searchable mail archives.PostgreSQL Daemon1998-01-15
| | | | | | | | | Patch by: wieck@sapserv.debis.de (Jan Wieck) One of the design rules of PostgreSQL is extensibility. And to follow this rule means (at least for me) that there should not only be a builtin PL. Instead I would prefer a defined interface for PL implemetations.
* Goodbye ABORT. Hello ERROR for all errors.Bruce Momjian1998-01-07
|
* Change elog(WARN) to elog(ERROR) and elog(ABORT).Bruce Momjian1998-01-05
|
* Make parser functions static where possible.Bruce Momjian1997-11-26
|
* Make GetAttributeByNum visible again for external use.Bruce Momjian1997-09-27
|
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-11 08:31:19 +0000