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* Plug several holes in backend's ability to cope withTom Lane1999-07-22
| | | | unexpected loss of connection to frontend.
* Re-add getopt.h check, remove NT-specific tests for it.Bruce Momjian1999-07-19
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* Move some system includes into c.h, and remove duplicates.Bruce Momjian1999-07-17
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* Final cleanupBruce Momjian1999-07-16
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* Final cleanup.Bruce Momjian1999-07-16
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* Update #include cleanupsBruce Momjian1999-07-16
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* Remove unused #includes in *.c files.Bruce Momjian1999-07-15
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* Clean up #include in /include directory. Add scripts for checking includes.Bruce Momjian1999-07-15
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* Fix for removal of temp tables if last transaction was aborted.Bruce Momjian1999-07-02
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* 1. Run all pg_dump queries in single serializable transaction.Vadim B. Mikheev1999-05-29
| | | | | | 2. Get rid of locking when updating statistics in vacuum. 3. Use QuerySnapshot in COPY TO and call SetQuerySnashot in main tcop loop before FETCH and COPY TO.
* Make functions static or NOT_USED as appropriate.Bruce Momjian1999-05-26
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* pgindent run over code.Bruce Momjian1999-05-25
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* Modify backend switch parsing to prevent 'insecure' switchesTom Lane1999-05-22
| | | | | from being accepted when they are passed from client connection request. Get rid of a couple that no longer do anything (like -P).
* Make postgres prompt backend>, and remove PARSEDEBUG.Bruce Momjian1999-05-22
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* Rip out QueryTreeList structure, root and branch. QuerytreeTom Lane1999-05-13
| | | | | | | | | | lists are now plain old garden-variety Lists, allocated with palloc, rather than specialized expansible-array data allocated with malloc. This substantially simplifies their handling and eliminates several sources of memory leakage. Several basic types of erroneous queries (syntax error, attempt to insert a duplicate key into a unique index) now demonstrably leak zero bytes per query.
* Changed debug options:Jan Wieck1999-05-11
| | | | | | | | | -d4 now prints compressed trees from nodeToString() -d5 prints pretty trees via nodeDisplay() new pg_options: pretty_plan, pretty_parse, pretty_rewritten Jan
* Rearrange top-level rewrite operations so that EXPLAIN worksTom Lane1999-05-09
| | | | on queries involving UNION, EXCEPT, INTERSECT.
* here are some patches for 6.5.0 which I already submitted but have neverBruce Momjian1999-05-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | | been applied. The patches are in the .tar.gz attachment at the end: varchar-array.patch this patch adds support for arrays of bpchar() and varchar(), which where always missing from postgres. These datatypes can be used to replace the _char4, _char8, etc., which were dropped some time ago. block-size.patch this patch fixes many errors in the parser and other program which happen with very large query statements (> 8K) when using a page size larger than 8192. This patch is needed if you want to submit queries larger than 8K. Postgres supports tuples up to 32K but you can't insert them because you can't submit queries larger than 8K. My patch fixes this problem. The patch also replaces all the occurrences of `8192' and `1<<13' in the sources with the proper constants defined in include files. You should now never find 8192 hardwired in C code, just to make code clearer. -- Massimo Dal Zotto
* -T was omitted from getopt() call.Tom Lane1999-05-01
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* Revise backend libpq interfaces so that messages to the frontendTom Lane1999-04-25
| | | | | | can be generated in a buffer and then sent to the frontend in a single libpq call. This solves problems with NOTICE and ERROR messages generated in the middle of a data message or COPY OUT operation.
* Change elog(ERROR) to get back to main loop via a plain sigsetjmp,Tom Lane1999-04-20
| | | | | | instead of doing a kill(self, SIGQUIT) and expecting the signal handler to do it. Also, clean up inconsistent definitions of the sigjmp buffer in the several files that already referenced it.
* Hi,Bruce Momjian1999-03-22
| | | | | | | | | | I have solved some problems with dynamic loading on NT. It is possible to run succesfully both trigger and plpgsql regression tests. The patch is in the included file "diff". Dan
* Add new postgres -O option to allow system table structure changes.Bruce Momjian1999-03-17
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* 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.
* Enable bushy and right-hand queries by default.Bruce Momjian1999-02-18
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* Enable bushy plans by default.Bruce Momjian1999-02-18
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* Re-enable bushy plans. Vadim want them.Bruce Momjian1999-02-16
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* Remove duplicate geqo functions, and more optimizer cleanupBruce Momjian1999-02-15
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* Change my-function-name-- to my_function_name, and optimizer renames.Bruce Momjian1999-02-13
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* Add TEMP tables/indexes. Add COPY pfree(). Other cleanups.Bruce Momjian1999-02-02
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* Hi!Bruce Momjian1999-01-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | INTERSECT and EXCEPT is available for postgresql-v6.4! The patch against v6.4 is included at the end of the current text (in uuencoded form!) I also included the text of my Master's Thesis. (a postscript version). I hope that you find something of it useful and would be happy if parts of it find their way into the PostgreSQL documentation project (If so, tell me, then I send the sources of the document!) The contents of the document are: -) The first chapter might be of less interest as it gives only an overview on SQL. -) The second chapter gives a description on much of PostgreSQL's features (like user defined types etc. and how to use these features) -) The third chapter starts with an overview of PostgreSQL's internal structure with focus on the stages a query has to pass (i.e. parser, planner/optimizer, executor). Then a detailed description of the implementation of the Having clause and the Intersect/Except logic is given. Originally I worked on v6.3.2 but never found time enough to prepare and post a patch. Now I applied the changes to v6.4 to get Intersect and Except working with the new version. Chapter 3 of my documentation deals with the changes against v6.3.2, so keep that in mind when comparing the parts of the code printed there with the patched sources of v6.4. Here are some remarks on the patch. There are some things that have still to be done but at the moment I don't have time to do them myself. (I'm doing my military service at the moment) Sorry for that :-( -) I used a rewrite technique for the implementation of the Except/Intersect logic which rewrites the query to a semantically equivalent query before it is handed to the rewrite system (for views, rules etc.), planner, executor etc. -) In v6.3.2 the types of the attributes of two select statements connected by the UNION keyword had to match 100%. In v6.4 the types only need to be familiar (i.e. int and float can be mixed). Since this feature did not exist when I worked on Intersect/Except it does not work correctly for Except/Intersect queries WHEN USED IN COMBINATION WITH UNIONS! (i.e. sometimes the wrong type is used for the resulting table. This is because until now the types of the attributes of the first select statement have been used for the resulting table. When Intersects and/or Excepts are used in combination with Unions it might happen, that the first select statement of the original query appears at another position in the query which will be executed. The reason for this is the technique used for the implementation of Except/Intersect which does a query rewrite!) NOTE: It is NOT broken for pure UNION queries and pure INTERSECT/EXCEPT queries!!! -) I had to add the field intersect_clause to some data structures but did not find time to implement printfuncs for the new field. This does NOT break the debug modes but when an Except/Intersect is used the query debug output will be the already rewritten query. -) Massive changes to the grammar rules for SELECT and INSERT statements have been necessary (see comments in gram.y and documentation for deatails) in order to be able to use mixed queries like (SELECT ... UNION (SELECT ... EXCEPT SELECT)) INTERSECT SELECT...; -) When using UNION/EXCEPT/INTERSECT you will get: NOTICE: equal: "Don't know if nodes of type xxx are equal". I did not have time to add comparsion support for all the needed nodes, but the default behaviour of the function equal met my requirements. I did not dare to supress this message! That's the reason why the regression test for union will fail: These messages are also included in the union.out file! -) Somebody of you changed the union_planner() function for v6.4 (I copied the targetlist to new_tlist and that was removed and replaced by a cleanup of the original targetlist). These chnages violated some having queries executed against views so I changed it back again. I did not have time to examine the differences between the two versions but now it works :-) If you want to find out, try the file queries/view_having.sql on both versions and compare the results . Two queries won't produce a correct result with your version. regards Stefan
* Apply Win32 patch from Horak Daniel.Bruce Momjian1999-01-17
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* Serialized mode works!Vadim B. Mikheev1998-12-16
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* The problem is that read_pg_options needs DataDir to read its file butBruce Momjian1998-10-16
| | | | | | | | | | DataDir is set after read_pg_options if postgres is called interactively. If postgres is forked by postgres DataDir is read from the PGDATA enviromnent variable set by the postmaster and this explains while the bug disappears. I have written this patch but I don't like it. Any better idea? Massimo Dal Zotto
* This is plain wrong, but check to see if DataDir was set *before* runningMarc G. Fournier1998-10-13
| | | | | read_pg_options ... read_pg_options should probably be moved to after the getopt() instead?
* case statement in select call was missing a break...Marc G. Fournier1998-10-13
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* Substantial rewrite of async.c to avoid problems with non-reentrant stdioTom Lane1998-10-06
| | | | | and possibly other problems. Minor changes in xact.c and postgres.c's main loop to support new handling of async NOTIFY.
* Clean up some minor bugs concerning what was inside the main loopTom Lane1998-10-02
| | | | | | | and what wasn't. Also try to improve the comments so that doesn't happen again. Changed SIGPIPE handling to SIG_IGN so that if frontend quits, we will finish out the current command and return to main loop before quitting. This seems much safer than a forced abort mid-command.
* OK, folks, here is the pgindent output.Bruce Momjian1998-09-01
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* Renaming cleanup, no pgindent yet.Bruce Momjian1998-09-01
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* From: Massimo Dal Zotto <dz@cs.unitn.it>Marc G. Fournier1998-08-30
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* From: Massimo Dal Zotto <dz@cs.unitn.it>Marc G. Fournier1998-08-25
| | | | | | | | | | | | > tprintf.patch > > tprintf.patch > > adds functions and macros which implement a conditional trace package > with the ability to change flags and numeric options of running > backends at runtime. > Options/flags can be specified in the command line and/or read from > the file pg_options in the data directory.
* From: Massimo Dal Zotto <dz@cs.unitn.it>Marc G. Fournier1998-08-25
| | | | | | | | assert.patch adds a switch to turn on/off the assert checking if enabled at compile time. You can now compile postgres with assert checking and disable it at runtime in a production environment.
* Move debugging printout of the query tree to print for all cases.Thomas G. Lockhart1998-08-25
| | | | | Formerly came just after early exit from loop for command nodes, so missed some cases.
* This is the final state of the rule system for 6.4 after theBruce Momjian1998-08-24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | patch is applied: Rewrite rules on relation level work fine now. Event qualifications on insert/update/delete rules work fine now. I added the new keyword OLD to reference the CURRENT tuple. CURRENT will be removed in 6.5. Update rules can reference NEW and OLD in the rule qualification and the actions. Insert/update/delete rules on views can be established to let them behave like real tables. For insert/update/delete rules multiple actions are supported now. The actions can also be surrounded by parantheses to make psql happy. Multiple actions are required if update to a view requires updates to multiple tables. Regular users are permitted to create/drop rules on tables they have RULE permissions for (DefineQueryRewrite() is now able to get around the access restrictions on pg_rewrite). This enables view creation for regular users too. This required an extra boolean parameter to pg_parse_and_plan() that tells to set skipAcl on all rangetable entries of the resulting queries. There is a new function pg_exec_query_acl_override() that could be used by backend utilities to use this facility. All rule actions (not only views) inherit the permissions of the event relations owner. Sample: User A creates tables T1 and T2, creates rules that log INSERT/UPDATE/DELETE on T1 in T2 (like in the regression tests for rules I created) and grants ALL but RULE on T1 to user B. User B can now fully access T1 and the logging happens in T2. But user B cannot access T2 at all, only the rule actions can. And due to missing RULE permissions on T1, user B cannot disable logging. Rules on the attribute level are disabled (they don't work properly and since regular users are now permitted to create rules I decided to disable them). Rules on select must have exactly one action that is a select (so select rules must be a view definition). UPDATE NEW/OLD rules are disabled (still broken, but triggers can do it). There are two new system views (pg_rule and pg_view) that show the definition of the rules or views so the db admin can see what the users do. They use two new functions pg_get_ruledef() and pg_get_viewdef() that are builtins. The functions pg_get_ruledef() and pg_get_viewdef() could be used to implement rule and view support in pg_dump. PostgreSQL is now the only database system I know, that has rewrite rules on the query level. All others (where I found a rule statement at all) use stored database procedures or the like (triggers as we call them) for active rules (as some call them). Future of the rule system: The now disabled parts of the rule system (attribute level, multiple actions on select and update new stuff) require a complete new rewrite handler from scratch. The old one is too badly wired up. After 6.4 I'll start to work on a new rewrite handler, that fully supports the attribute level rules, multiple actions on select and update new. This will be available for 6.5 so we get full rewrite rule capabilities. Jan
* MergeSort was sometimes called mergejoin and was confusing. NowBruce Momjian1998-08-04
| | | | it is now only mergejoin.
* From: t-ishii@sra.co.jpMarc G. Fournier1998-07-26
| | | | | | | | | As Bruce mentioned, this is due to the conflict among changes we made. Included patches should fix the problem(I changed all MB to MULTIBYTE). Please let me know if you have further problem. P.S. I did not include pathces to configure and gram.c to save the file size(configure.in and gram.y modified).
* Add auto-size to screen to \d? commands. Use UNION to show allBruce Momjian1998-07-18
| | | | | \d? results in one query. Add \d? field search feature. Rename MB to MULTIBYTE.
* From: Tom Lane <tgl@sss.pgh.pa.us>Marc G. Fournier1998-07-09
| | | | | | | | | | | | | | | | | | Making PQrequestCancel safe to call in a signal handler turned out to be much easier than I feared. So here are the diffs. Some notes: * I modified the postmaster's packet "iodone" callback interface to allow the callback routine to return a continue-or-drop-connection return code; this was necessary to allow the connection to be closed after receiving a Cancel, rather than proceeding to launch a new backend... Being a neatnik, I also made the iodone proc have a typechecked parameter list. * I deleted all code I could find that had to do with OOB. * I made some edits to ensure that all signals mentioned in the code are referred to symbolically not by numbers ("SIGUSR2" not "2"). I think Bruce may have already done at least some of the same edits; I hope that merging these patches is not too painful.
* Fix for hang after postmaster restart. Add new proc_exit andBruce Momjian1998-06-27
| | | | shmem_exit to replace exitpg().
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