Commit Graph

1787 Commits

Author SHA1 Message Date
Thomas G. Lockhart ce5dc562e6 Allow bit string constants without fully-specified length declaration.
Implement conversion between 8-byte integers and bit strings.
 Similar to what is done for 4-byte integers.
2002-08-04 06:33:59 +00:00
Tom Lane 22c64f1834 When compiling with --enable-cassert, check for reference count leaks
in the relcache.  It's rather silly that we have reference count leak
checks in bufmgr and in catcache, but not in relcache which will normally
have many fewer entries.  Chris K-L would have caught at least one bug
in his recent DROP patch if he'd had this.
2002-08-02 22:36:05 +00:00
Tom Lane 38bb77a5d1 ALTER TABLE DROP COLUMN works. Patch by Christopher Kings-Lynne,
code review by Tom Lane.  Remaining issues: functions that take or
return tuple types are likely to break if one drops (or adds!)
a column in the table defining the type.  Need to think about what
to do here.

Along the way: some code review for recent COPY changes; mark system
columns attnotnull = true where appropriate, per discussion a month ago.
2002-08-02 18:15:10 +00:00
Tom Lane ce7565ab91 Instead of having a configure-time DEFAULT_ATTSTATTARGET, store -1 in
attstattarget to indicate 'use the default'.  The default is now a GUC
variable default_statistics_target, and so may be changed on the fly.  Along
the way we gain the ability to have pg_dump dump the per-column statistics
target when it's not the default.  Patch by Neil Conway, with some kibitzing
from Tom Lane.
2002-07-31 17:19:54 +00:00
Bruce Momjian 1107531c91 Rename pid function to backend_pid(). 2002-07-31 01:49:13 +00:00
Bruce Momjian f67cb71961 Add function to access backend pid, pg_stat_get_backend_mypid. 2002-07-31 00:40:40 +00:00
Bruce Momjian 578e71fee5 This should fix a bug where a row that was updated or
deleted that had another row inserted/updated to its old
value during the same statement or other statements before the
integrity check for noaction would incorrectly error.  This
could happen in deferred constraints or due to triggers or
functions. It's effectively a reworking of the previous patch that
did a not exists to instead do a separate check.

Stephan Szabo
2002-07-30 16:33:21 +00:00
Tom Lane 9f1fc1080e Since we're depending on %option noyywrap in the main scanner now,
we may as well use it in all our flex files.  Make all the flex files
have a consistent set of options.
2002-07-30 16:33:08 +00:00
Bruce Momjian 23a8b77d42 Here are two patches. The guc_and_tablefunc patch addresses the two
changes mentioned above, and also adds a new function to the tablefunc
API. The tablefunc API change adds the following function:

* Oid foidGetTypeId(Oid foid) - Get a function's typeid given the
* function Oid. Use this together with TypeGetTupleDesc() to get a
* TupleDesc which is derived from the function's declared return type.

In the next post I'll send the contrib/tablefunc patch, which
illustrates the usage of this new function. Also attached is a doc patch
for this change. The doc patch also adds a function that I failed to
document previously.

Joe Conway
2002-07-30 16:20:03 +00:00
Bruce Momjian ceb438ed8c This patch fixes one serious bug (runaway INSERT) and a few rare (and
hard to reproduce) error conditions.

Manfred Koizar
2002-07-30 16:08:33 +00:00
Bruce Momjian a89fc4e6de --enable-syslog no longer required to use syslog. 2002-07-30 04:24:54 +00:00
Tom Lane ea4686e3e1 Implement CREATE/DROP OPERATOR CLASS. Work still remains: need more
documentation (xindex.sgml should be rewritten), need to teach pg_dump
about it, need to update contrib modules that currently build pg_opclass
entries by hand.  Original patch by Bill Studenmund, grammar adjustments
and general update for 7.3 by Tom Lane.
2002-07-29 22:14:11 +00:00
Tatsuo Ishii 0345f58496 Implement DROP CONVERSION
Add regression test
2002-07-25 10:07:13 +00:00
Peter Eisentraut 739adf32ee Remove unused system table columns:
pg_language.lancompiler
pg_operator.oprprec
pg_operator.oprisleft
pg_proc.proimplicit
pg_proc.probyte_pct
pg_proc.properbyte_cpu
pg_proc.propercall_cpu
pg_proc.prooutin_ratio
pg_shadow.usetrace
pg_type.typprtlen
pg_type.typreceive
pg_type.typsend

Attempts to use the obsoleted attributes of pg_operator or pg_proc
in the CREATE commands will be greeted by a warning.  For pg_type,
there is no warning (yet) because pg_dump scripts still contain these
attributes.

Also remove new but already obsolete spellings
isVolatile, isStable, isImmutable in WITH clause.  (Use new syntax
instead.)
2002-07-24 19:11:14 +00:00
Tatsuo Ishii 19a20e04bd Add Japanese README explaining how to add new conversion.
English README will come soon...
2002-07-24 07:05:41 +00:00
Tom Lane c33a6343cd Code review for SHOW output changes; fix horology expected files for
new SHOW output format.
2002-07-20 15:12:56 +00:00
Bruce Momjian 63cfc6a8e8 Fix problems caused by code drift of API for without-oids. 2002-07-20 06:17:43 +00:00
Bruce Momjian 1ce03603cc > 2. This patch includes the same Table Function API fixes that I
>    submitted on July 9:
>
>    http://archives.postgresql.org/pgsql-patches/2002-07/msg00056.php
>
>    Please disregard that one *if* this one is applied. If this one is
>    rejected please go ahead with the July 9th patch.

The July 9th Table Function API patch mentioned above is now in CVS, so
here is an updated version of the guc patch which should apply cleanly
against CVS tip.

Joe Conway
2002-07-20 05:49:28 +00:00
Bruce Momjian b0f5086e41 oid is needed, it is added at the end of the struct (after the null
bitmap, if present).

Per Tom Lane's suggestion the information whether a tuple has an oid
or not is carried in the tuple descriptor.  For debugging reasons
tdhasoid is of type char, not bool.  There are predefined values for
WITHOID, WITHOUTOID and UNDEFOID.

This patch has been generated against a cvs snapshot from last week
and I don't expect it to apply cleanly to current sources.  While I
post it here for public review, I'm working on a new version against a
current snapshot.  (There's been heavy activity recently; hope to
catch up some day ...)

This is a long patch;  if it is too hard to swallow, I can provide it
in smaller pieces:

Part 1:  Accessor macros
Part 2:  tdhasoid in TupDesc
Part 3:  Regression test
Part 4:  Parameter withoid to heap_addheader
Part 5:  Eliminate t_oid from HeapTupleHeader

Part 2 is the most hairy part because of changes in the executor and
even in the parser;  the other parts are straightforward.

Up to part 4 the patched postmaster stays binary compatible to
databases created with an unpatched version.  Part 5 is small (100
lines) and finally breaks compatibility.

Manfred Koizar
2002-07-20 05:16:59 +00:00
Bruce Momjian e77054e029 This patch fixes a regression caused by my recent changes to heap
tuple header.  The fix is based on the thought that HEAP_MOVED_IN is
not needed any more as soon as HEAP_XMIN_COMMITTED has been set.  So
in tqual.c and vacuum.c the HEAP_MOVED bits are cleared when
HEAP_XMIN_COMMITTED is set.

Vacuum robustness is enhanced by rearranging ifs, so that we have a
chance to elog(ERROR, ...) before an assertion fails.

A new regression test is included.

Manfred Koizar
2002-07-20 04:57:13 +00:00
Tatsuo Ishii 86270024ff Oops. Too much ifdef out. 2002-07-19 11:09:25 +00:00
Tatsuo Ishii 248cbb5796 Temporary ifdef out migrating functions to avoid compiler warnings. 2002-07-19 00:22:24 +00:00
Peter Eisentraut 97377048b4 pg_cast table, and standards-compliant CREATE/DROP CAST commands, plus
extension to create binary compatible casts.  Includes dependency tracking
as well.

pg_proc.proimplicit is now defunct, but will be removed in a separate
commit.

pg_dump provides a migration path from the previous scheme to declare
casts.  Dumping binary compatible casts is currently impossible, though.
2002-07-18 23:11:32 +00:00
Peter Eisentraut 85d2a629c6 Create directory before installing files. 2002-07-18 22:58:08 +00:00
Bruce Momjian 7d78bac108 Back out BETWEEN node patch, was causing initdb failure. 2002-07-18 17:14:20 +00:00
Bruce Momjian 3e22406ec6 Finished the Between patch Christopher started.
Implements between (symmetric / asymmetric) as a node.

Executes the left or right expression once, makes a Const out of the
resulting Datum and executes the >=, <= portions out of the Const sets.

Of course, the parser does a fair amount of preparatory work for this to
happen.

Rod Taylor
2002-07-18 04:41:46 +00:00
Bruce Momjian 7ea5f1d7f1 Here is a patch for the Table Function API. It fixes a bug found by Neil
Conway (BuildTupleFromCStrings sets NULL for pass-by-value types when
intended value is 0). It also implements some other improvements
suggested by Neil.

Joe Conway
2002-07-18 04:40:30 +00:00
Tatsuo Ishii eb335a034b I have committed many support files for CREATE CONVERSION. Default
conversion procs and conversions are added in initdb. Currently
supported conversions are:

UTF-8(UNICODE) <--> SQL_ASCII, ISO-8859-1 to 16, EUC_JP, EUC_KR,
		    EUC_CN, EUC_TW, SJIS, BIG5, GBK, GB18030, UHC,
		    JOHAB, TCVN

EUC_JP <--> SJIS
EUC_TW <--> BIG5
MULE_INTERNAL <--> EUC_JP, SJIS, EUC_TW, BIG5

Note that initial contents of pg_conversion system catalog are created
in the initdb process. So doing initdb required is ideal, it's
possible to add them to your databases by hand, however. To accomplish
this:

psql -f your_postgresql_install_path/share/conversion_create.sql your_database

So I did not bump up the version in cataversion.h.

TODO:
Add more conversion procs
Add [CASCADE|RESTRICT] to DROP CONVERSION
Add tuples to pg_depend
Add regression tests
Write docs
Add SQL99 CONVERT command?
--
Tatsuo Ishii
2002-07-18 02:02:30 +00:00
Bruce Momjian 846ea08d34 Oops, sometimes strtol isn't called in pg_atoi, so we do need that badp
check.
2002-07-16 18:34:16 +00:00
Bruce Momjian 7aee5ed3b7 Fix tid to in/out as unsigned. 2002-07-16 17:55:25 +00:00
Tatsuo Ishii 3c7798f068 Add conversion procs for CREATE CONVERSION 2002-07-16 09:25:06 +00:00
Bruce Momjian b3341ddbf2 Mark 'line' as 'not implemented' in SGML and psql \dT, per Thomas
Lockhart.  initdb not forced.
2002-07-16 03:30:27 +00:00
Bruce Momjian e552e9e512 Improve relcache.c error reporting for the next guy who has to debug
this thing.
2002-07-15 01:57:51 +00:00
Bruce Momjian 4db8718e84 Add SET statement_timeout capability. Timeout is in ms. A value of
zero turns off the timer.
2002-07-13 01:02:14 +00:00
Tom Lane 7c6df91dda Second phase of committing Rod Taylor's pg_depend/pg_constraint patch.
pg_relcheck is gone; CHECK, UNIQUE, PRIMARY KEY, and FOREIGN KEY
constraints all have real live entries in pg_constraint.  pg_depend
exists, and RESTRICT/CASCADE options work on most kinds of DROP;
however, pg_depend is not yet very well populated with dependencies.
(Most of the ones that are present at this point just replace formerly
hardwired associations, such as the implicit drop of a relation's pg_type
entry when the relation is dropped.)  Need to add more logic to create
dependency entries, improve pg_dump to dump constraints in place of
indexes and triggers, and add some regression tests.
2002-07-12 18:43:19 +00:00
Tatsuo Ishii fcc962566a Add new CREATE CONVERSION/DROP CONVERSION command.
This is the first cut toward CREATE CONVERSION/DROP CONVERSION implementaion.
The commands can now add/remove tuples to the new pg_conversion system
catalog, but that's all. Still need work to make them actually working.
Documentations, regression tests also need work.
2002-07-11 07:39:28 +00:00
Bruce Momjian 1666970275 I've fixed up the way domain constraints (not null and type length)
are managed as per request.

Moved from merging with table attributes to applying themselves during
coerce_type() and coerce_type_typmod.

Regression tests altered to test the cast() scenarios.

Rod Taylor
2002-07-06 20:16:36 +00:00
Thomas G. Lockhart 68d9fbeb55 Implement the IS DISTINCT FROM operator per SQL99.
Reused the Expr node to hold DISTINCT which strongly resembles
 the existing OP info. Define DISTINCT_EXPR which strongly resembles
 the existing OPER_EXPR opType, but with handling for NULLs required
 by SQL99.
We have explicit support for single-element DISTINCT comparisons
 all the way through to the executor. But, multi-element DISTINCTs
 are handled by expanding into a comparison tree in gram.y as is done for
 other row comparisons. Per discussions, it might be desirable to move
 this into one or more purpose-built nodes to be handled in the backend.
Define the optional ROW keyword and token per SQL99.
 This allows single-element row constructs, which were formerly disallowed
 due to shift/reduce conflicts with parenthesized a_expr clauses.
Define the SQL99 TREAT() function. Currently, use as a synonym for CAST().
2002-07-04 15:24:11 +00:00
Bruce Momjian db650b451e Remove Jan's copyright, with his approval. 2002-06-21 02:59:38 +00:00
Bruce Momjian 42ef2c9cb7 Clean up some copyrights. 2002-06-20 20:51:45 +00:00
Bruce Momjian 27bce57766 Add missing SRF file. 2002-06-20 20:37:00 +00:00
Bruce Momjian d84fe82230 Update copyright to 2002. 2002-06-20 20:29:54 +00:00
Bruce Momjian ba790a5608 Here is a patch for Composite and Set returning function support. I made
two small changes to the API since last patch, which hopefully completes
the decoupling of composite function support from SRF specific support.

Joe Conway
2002-06-20 17:19:08 +00:00
Bruce Momjian 10f05d8127 Merge ALTER GROUP ADD/DROP rules by creating add_drop action. 2002-06-17 07:00:27 +00:00
Bruce Momjian 0dbfea39f3 Remove KSQO from GUC and move file to _deadcode. 2002-06-16 00:09:12 +00:00
Bruce Momjian eb1ad5b4b5 Patch for current_schemas to optionally include implicit ...
Second cut attached. This one just adds a boolean option to the existing
function to indicate that implicit schemas are to be included (or not).
I remembered the docs as well this time :-)

Dave Page
2002-06-15 20:03:51 +00:00
Bruce Momjian 3c35face41 This patch wraps all accesses to t_xmin, t_cmin, t_xmax, and t_cmax in
HeapTupleHeaderData in setter and getter macros called
HeapTupleHeaderGetXmin, HeapTupleHeaderSetXmin etc.

It also introduces a "virtual" field xvac by defining
HeapTupleHeaderGetXvac and HeapTupleHeaderSetXvac.  Xvac is used by
VACUUM, in fact it is stored in t_cmin.

Manfred Koizar
2002-06-15 19:54:24 +00:00
Bruce Momjian 6b9e742458 The macaddr datatype understands most formats of MAC address, except 12
hex digits with no separators, eg 00AABBCCDDEE. This is easily remedied
with the following patch (against 7.2.1):

Mike Wyer
2002-06-15 19:39:33 +00:00
Thomas G. Lockhart bad5fe9797 Search the existing regular expression cache as a ring buffer.
Will optimize the case for repeated calls for the same expression,
 which seems to be the most common case. Formerly, always searched
 from the first entry.
May want to look at the least-recently-used algorithm to make sure it
 is identifying the right slots to reclaim. Seems silly to do math when
 it seems that we could simply use an incrementing counter...
2002-06-15 02:49:47 +00:00
Bruce Momjian 63a354c4bb Make encryption of stored passwords the default, as discussed months ago. 2002-06-15 01:29:50 +00:00
Tatsuo Ishii 15378a53f8 Add support for GB18030 2002-06-14 03:30:56 +00:00
Tatsuo Ishii 14f72b9a4d Add GB18030 support. Contributed by Bill Huang <bill_huanghb@ybb.ne.jp>
(ODBC support has not been committed yet. left for Hiroshi...)
2002-06-13 08:30:22 +00:00
Tatsuo Ishii 620dbc98cd make namein multibyte aware 2002-06-13 06:19:45 +00:00
Tom Lane ecb5269404 Further tweaks to support display of sort keys in EXPLAIN --- initial
implementation didn't work for Sort nodes associated with Append plans.
2002-06-13 03:40:49 +00:00
Thomas G. Lockhart ea01a451cc Implement SQL99 OVERLAY(). Allows substitution of a substring in a string.
Implement SQL99 SIMILAR TO as a synonym for our existing operator "~".
Implement SQL99 regular expression SUBSTRING(string FROM pat FOR escape).
 Extend the definition to make the FOR clause optional.
 Define textregexsubstr() to actually implement this feature.
Update the regression test to include these new string features.
 All tests pass.
Rename the regular expression support routines from "pg95_xxx" to "pg_xxx".
Define CREATE CHARACTER SET in the parser per SQL99. No implementation yet.
2002-06-11 15:44:38 +00:00
Jan Wieck 469cb65aca Katherine Ward wrote:
> Changes to avoid collisions with WIN32 & MFC names...
> 1.  Renamed:
>       a.  PROC => PGPROC
>       b.  GetUserName() => GetUserNameFromId()
>       c.  GetCurrentTime() => GetCurrentDateTime()
>       d.  IGNORE => IGNORE_DTF in include/utils/datetime.h & utils/adt/datetim
>
> 2.  Added _P to some lex/yacc tokens:
>       CONST, CHAR, DELETE, FLOAT, GROUP, IN, OUT

Jan
2002-06-11 13:40:53 +00:00
Bruce Momjian 4cb53d71b9 Remove DEBUG_LEVEL from postgresql.conf. Now uses CLIENT/SERVER_MIN_MESSAGES. 2002-06-08 04:08:19 +00:00
Bruce Momjian 585fef1671 Improve readability of factorial, from Florian Weimer. 2002-06-07 23:43:17 +00:00
Bruce Momjian 8a3f34b558 Fix for factorial(0::int2) returning 1, from sugita@sra.co.jp. 2002-06-07 23:41:53 +00:00
Thomas G. Lockhart 17adf80b47 Fix timestamp to date conversion for the case where timestamp uses a double
precision storage format. Previously applied the same math as used for the
 64-bit integer storage format case, which was wrong.
 Problem introduced recently when the 64-bit storage format was
 implemented.
2002-06-01 15:52:15 +00:00
Tom Lane 5a8ab29adf Queries used by ruleutils were not schema-proof. 2002-05-28 22:16:15 +00:00
Tom Lane 4d567013cf Remove AMI_OVERRIDE tests from tqual.c routines; they aren't necessary
and just slow down normal operations (only fractionally, but a cycle saved
is a cycle earned).  Improve documentation of AMI_OVERRIDE behavior.
2002-05-25 20:00:12 +00:00
Tom Lane 3f4d488022 Mark index entries "killed" when they are no longer visible to any
transaction, so as to avoid returning them out of the index AM.  Saves
repeated heap_fetch operations on frequently-updated rows.  Also detect
queries on unique keys (equality to all columns of a unique index), and
don't bother continuing scan once we have found first match.

Killing is implemented in the btree and hash AMs, but not yet in rtree
or gist, because there isn't an equally convenient place to do it in
those AMs (the outer amgetnext routine can't do it without re-pinning
the index page).

Did some small cleanup on APIs of HeapTupleSatisfies, heap_fetch, and
index_insert to make this a little easier.
2002-05-24 18:57:57 +00:00
Peter Eisentraut d60f10b0e7 Add optional "validator" function to languages that can validate the
function body (and other properties) as a function in the language
is created.  This generalizes ad hoc code that already existed for
the built-in languages.

The validation now happens after the pg_proc tuple of the new function
is created, so it is possible to define recursive SQL functions.

Add some regression test cases that cover bogus function definition
attempts.
2002-05-22 17:21:02 +00:00
Tom Lane df9c8e1a39 Make RelationForgetRelation error out if the relcache entry has nonzero
reference count.  This avoids leaving dangling pointers around, as in
recent bug report against sequences (bug# 671).
2002-05-22 15:57:40 +00:00
Hiroshi Inoue a3519a2fcc Allow
CREATE VIEW as SELECT CTID, ....
  SELECT currtid( a view, ..).
2002-05-22 07:46:58 +00:00
Tom Lane 6c6f395a8a Since COPY fires triggers, it seems like a good idea for it to use
a frozen (copied) snapshot too.  Move execMain's snapshot copying code
out into a subroutine in case we find other places that need it.
2002-05-21 22:59:01 +00:00
Tom Lane 959e61e917 Remove global variable scanCommandId in favor of storing a command ID
in snapshots, per my proposal of a few days ago.  Also, tweak heapam.c
routines (heap_insert, heap_update, heap_delete, heap_mark4update) to
be passed the command ID to use, instead of doing GetCurrentCommandID.
For catalog updates they'll still get passed current command ID, but
for updates generated from the main executor they'll get passed the
command ID saved in the snapshot the query is using.  This should fix
some corner cases associated with functions and triggers that advance
current command ID while an outer query is still in progress.
2002-05-21 22:05:55 +00:00
Tom Lane 44fbe20d62 Restructure indexscan API (index_beginscan, index_getnext) per
yesterday's proposal to pghackers.  Also remove unnecessary parameters
to heap_beginscan, heap_rescan.  I modified pg_proc.h to reflect the
new numbers of parameters for the AM interface routines, but did not
force an initdb because nothing actually looks at those fields.
2002-05-20 23:51:44 +00:00
Tom Lane dd9af92c41 Add display of sort keys to the default EXPLAIN output. 2002-05-18 21:38:41 +00:00
Peter Eisentraut e8ac187c68 Allow functions to be executed with the privileges of the function owner.
I took the opportunity to remove the pg_proc.proistrusted field.
2002-05-18 13:48:01 +00:00
Tom Lane 940f772a29 Support temporary setting of search path during CREATE SCHEMA; this
allows the example in the CREATE SCHEMA ref page to actually work now.
Also, clean up when the transaction that initially creates a temp-table
namespace is later aborted.  Simplify internal representation of search
path by folding special cases into the main list.
2002-05-17 20:53:33 +00:00
Tom Lane 5f21560ae8 Dept. of second thoughts: interaction between DoIt and makeDepend
in set_config_option wasn't quite right.  Also clean up a couple other
things that could have been done better.
2002-05-17 20:32:29 +00:00
Tom Lane f0811a74b3 Merge the last few variable.c configuration variables into the generic
GUC support.  It's now possible to set datestyle, timezone, and
client_encoding from postgresql.conf and per-database or per-user
settings.  Also, implement rollback of SET commands that occur in a
transaction that later fails.  Create a SET LOCAL var = value syntax
that sets the variable only for the duration of the current transaction.
All per previous discussions in pghackers.
2002-05-17 01:19:19 +00:00
Tom Lane cbd3b97e5a Remove unnecessary pfree's in geometric operators. At least one of these
is actively dangerous, per bug report from Ewald Geschwinde 14-May-02,
and several of the rest look suspicious to me.  Since there is no longer
any significant value in retail pfree's in these functions, just get
rid of all of them for safety's sake.
2002-05-14 18:16:51 +00:00
Thomas G. Lockhart cc2ce83633 Fix lookup tables used for rounding interval data values when not using
integer datetimes. Thanks to Tom Lane for spotting the problem.
2002-05-14 13:37:27 +00:00
Peter Eisentraut 5c4e5aa3ff Make regression tests locale-proof by setting some locale categories
to C at run-time, and providing alternative output files for different
sort orders.
2002-05-14 13:05:43 +00:00
Tom Lane 3389a110d4 Get rid of long-since-vestigial Iter node type, in favor of adding a
returns-set boolean field in Func and Oper nodes.  This allows cleaner,
more reliable tests for expressions returning sets in the planner and
parser.  For example, a WHERE clause returning a set is now detected
and complained of in the parser, not only at runtime.
2002-05-12 23:43:04 +00:00
Tom Lane f9e4f611a1 First pass at set-returning-functions in FROM, by Joe Conway with
some kibitzing from Tom Lane.  Not everything works yet, and there's
no documentation or regression test, but let's commit this so Joe
doesn't need to cope with tracking changes in so many files ...
2002-05-12 20:10:05 +00:00
Tom Lane 9b5ca7ee0c Forgot to handle 'opaque' function arguments in regprocedurein/out. 2002-05-11 00:24:16 +00:00
Peter Eisentraut 1944bff1d6 Make initdb print a message about which locale it is about to use.
Re-add warning if the locale prevents LIKE-optimization.  Done within
initdb now.
2002-05-09 13:30:24 +00:00
Tom Lane 2822788993 Accept SET SESSION AUTHORIZATION DEFAULT and RESET SESSION AUTHORIZATION
to reset session userid to the originally-authenticated name.  Also,
relax SET SESSION AUTHORIZATION to allow specifying one's own username
even if one is not superuser, so as to avoid unnecessary error messages
when loading a pg_dump file that uses this command.  Per discussion from
several months ago.
2002-05-06 19:47:30 +00:00
Tom Lane 1cf693ab86 Reorder snapshot checks to save a couple comparisons in the common case,
where the tuple's xmin or xmax is older than the snapshot xmin.  There
is no need to check it against snapshot xmax in that case.
2002-05-06 02:39:01 +00:00
Tom Lane 205b5c2f4b A little paranoia never hurt anyone. 2002-05-05 17:50:04 +00:00
Tom Lane 72a3902a66 Create an internal semaphore API that is not tied to SysV semaphores.
As proof of concept, provide an alternate implementation based on POSIX
semaphores.  Also push the SysV shared-memory implementation into a
separate file so that it can be replaced conveniently.
2002-05-05 00:03:29 +00:00
Tom Lane 91fc10fdac Fix compile errors in CYR_RECODE code, per report from Oliver Elphick. 2002-05-03 20:43:30 +00:00
Tom Lane 90739d4621 Make ruleutils.c schema-aware. Displayed names are schema-qualified
only if they would not be found without qualification given the current
search path, as per idea from Peter Eisentraut.
2002-05-03 20:15:02 +00:00
Tom Lane 3220fd2138 Tweak scanner/grammar interface so that the keyword-as-identifier rules
in gram.y can make use of the keywords.c string table, instead of having
their own copies of the keyword strings.  This saves a few kilobytes and
more importantly eliminates an opportunity for cut-and-paste errors.
2002-05-02 18:44:11 +00:00
Tom Lane 0041a3d72f Add routines in namespace.c to determine whether objects are visible
in the search path.  (We might want to make these available as SQL
functions too, but I haven't done that yet.)  Fix format_type to be
schema-aware.
2002-05-01 23:06:41 +00:00
Tom Lane e4f06dc12e Clean up loose ends remaining from schema privileges discussion.
I concluded that RENAME should require CREATE privilege on the namespace
as well as ownership of the table.
2002-04-30 01:26:26 +00:00
Tom Lane 88ef7067f7 Add cache invalidation callback hooks. 2002-04-29 22:14:34 +00:00
Tom Lane 25dfba3954 Make ruleutils.c use format_type for printing typenames. Minor tweaks
in quoting rules and recognition of implicit type coercions.
2002-04-28 00:49:13 +00:00
Tom Lane c06f6a6bc2 Support toasting of shared system relations, and provide toast tables for
pg_database, pg_shadow, pg_group, all of which now have potentially-long
fields.  Along the way, get rid of SharedSystemRelationNames list: shared
rels are now identified in their include/pg_catalog/*.h files by a
BKI_SHARED_RELATION macro, while indexes and toast rels inherit sharedness
automatically from their parent table.  Fix some bugs with failure to detoast
pg_group.grolist during ALTER GROUP.
2002-04-27 21:24:34 +00:00
Tom Lane 31c775adeb Restructure aclcheck error reporting to make permission-failure
messages more uniform and internationalizable: the global array
aclcheck_error_strings[] is gone in favor of a subroutine
aclcheck_error().  Partial implementation of namespace-related
permission checks --- not all done yet.
2002-04-27 03:45:03 +00:00
Tom Lane a309032d2f Add current_schema() and current_schemas() inquiry functions.
Update has_table_privilege functions to cope with schema-qualified
names in the same way as nextval() and others.
2002-04-26 01:24:08 +00:00
Tom Lane 52200befd0 Implement types regprocedure, regoper, regoperator, regclass, regtype
per pghackers discussion.  Add some more typsanity tests, and clean
up some problems exposed thereby (broken or missing array types for
some built-in types).  Also, clean up loose ends from unknownin/out
patch.
2002-04-25 02:56:56 +00:00
Bruce Momjian 5d2fdf6e6d Here's a patch to add unknownin/unknownout support. I also poked around
looking for places that assume UNKNOWN == TEXT. One of those was the
"SET" type in pg_type.h, which was using textin/textout. This one I took
care of in this patch. The other suspicious place was in
string_to_dataum (which is defined in both selfuncs.c and indxpath.c). I
wasn't too sure about those, so I left them be.

Joe Conway
2002-04-24 02:12:53 +00:00
Tom Lane 28a898ad54 Clean up INT64CONST conflicts. Make the pg_crc code use a macro called
UINT64CONST, since unsigned was what it wanted anyway.  Centralize macro
definitions into c.h.
2002-04-23 15:45:30 +00:00
Thomas G. Lockhart 547df0cc85 Support alternate storage scheme of 64-bit integer for date/time types.
Use "--enable-integer-datetimes" in configuration to use this rather
 than the original float8 storage. I would recommend the integer-based
 storage for any platform on which it is available. We perhaps should
 make this the default for the production release.
Change timezone(timestamptz) results to return timestamp rather than
 a character string. Formerly, we didn't have a way to represent
 timestamps with an explicit time zone other than freezing the info into
 a string. Now, we can reasonably omit the explicit time zone from the
 result and return a timestamp with values appropriate for the specified
 time zone. Much cleaner, and if you need the time zone in the result
 you can put it into a character string pretty easily anyway.
Allow fractional seconds in date/time types even for dates prior to 1BC.
Limit timestamp data types to 6 decimal places of precision. Just right
 for a micro-second storage of int8 date/time types, and reduces the
 number of places ad-hoc rounding was occuring for the float8-based types.
Use lookup tables for precision/rounding calculations for timestamp and
 interval types.  Formerly used pow() to calculate the desired value but
 with a more limited range there is no reason to not type in a lookup
 table. Should be *much* better performance, though formerly there were
 some optimizations to help minimize the number of times pow() was called.
Define a HAVE_INT64_TIMESTAMP variable. Based on the configure option
 "--enable-integer-datetimes" and the existing internal INT64_IS_BUSTED.
Add explicit date/interval operators and functions for addition and
 subtraction. Formerly relied on implicit type promotion from date to
 timestamp with time zone.
Change timezone conversion functions for the timetz type from "timetz()"
 to "timezone()". This is consistant with other time zone coersion
 functions for other types.
Bump the catalog version to 200204201.
Fix up regression tests to reflect changes in fractional seconds
 representation for date/times in BC eras.
All regression tests pass on my Linux box.
2002-04-21 19:52:18 +00:00
Tom Lane b0bcf8aab2 Restructure AclItem representation so that we can have more than eight
different privilege bits (might as well make use of the space we were
wasting on padding).  EXECUTE and USAGE bits for procedures, languages
now are separate privileges instead of being overlaid on SELECT.  Add
privileges for namespaces and databases.  The GRANT and REVOKE commands
work for these object types, but we don't actually enforce the privileges
yet...
2002-04-21 00:26:44 +00:00
Tatsuo Ishii ad201b8d18 Remove --enable-syslog option 2002-04-21 00:22:52 +00:00
Tom Lane 6d6ca2166c Change naming rule for ON SELECT rules of views: they're all just
_RETURN now, since there's no need to keep 'em unique anymore.
2002-04-19 23:13:54 +00:00
Tom Lane 201737168c pg_trigger's index on tgrelid is replaced by a unique index on
(tgrelid, tgname).  This provides an additional check on trigger name
uniqueness per-table (which was already enforced by the code anyway).
With this change, RelationBuildTriggers will read the triggers in
order by tgname, since it's scanning using this index.  Since a
predictable trigger ordering has been requested for some time, document
this behavior as a feature.  Also document that rules fire in name
order, since yesterday's changes to pg_rewrite indexing cause that too.
2002-04-19 16:36:08 +00:00
Tom Lane b3120804ad Rule names are now unique per-relation, rather than unique globally.
DROP RULE and COMMENT ON RULE syntax adds an 'ON tablename' clause,
similar to TRIGGER syntaxes.  To allow loading of existing pg_dump
files containing COMMENT ON RULE, the COMMENT code will still accept
the old syntax --- but only if the target rulename is unique across
the whole database.
2002-04-18 20:01:11 +00:00
Tom Lane 27a54ae282 Opclasses live in namespaces. I also took the opportunity to create
an 'opclass owner' column in pg_opclass.  Nothing is done with it at
present, but since there are plans to invent a CREATE OPERATOR CLASS
command soon, we'll probably want DROP OPERATOR CLASS too, which
suggests that a notion of ownership would be a good idea.
2002-04-17 20:57:57 +00:00
Tom Lane 6cef5d2549 Operators live in namespaces. CREATE/DROP/COMMENT ON OPERATOR take
qualified operator names directly, for example CREATE OPERATOR myschema.+
( ... ).  To qualify an operator name in an expression you need to write
OPERATOR(myschema.+) (thanks to Peter for suggesting an escape hatch).
I also took advantage of having to reformat pg_operator to fix something
that'd been bugging me for a while: mergejoinable operators should have
explicit links to the associated cross-data-type comparison operators,
rather than hardwiring an assumption that they are named < and >.
2002-04-16 23:08:12 +00:00
Tatsuo Ishii c4e0c113b8 Fix text_substr bug intrduced in 7.3 development
using Joe Conway's patches (submitted at pgsql-patches on 2002/04/08)
 + small fix.
2002-04-15 07:54:37 +00:00
Tom Lane 9999f5a10e Checking to decide whether relations are system relations now depends
on the namespace not the name; pg_ is not a reserved prefix for table
names anymore.  From Fernando Nasser.
2002-04-12 20:38:31 +00:00
Tom Lane 902a6a0a4b Restructure representation of aggregate functions so that they have pg_proc
entries, per pghackers discussion.  This fixes aggregates to live in
namespaces, and also simplifies/speeds up lookup in parse_func.c.
Also, add a 'proimplicit' flag to pg_proc that controls whether a type
coercion function may be invoked implicitly, or only explicitly.  The
current settings of these flags are more permissive than I would like,
but we will need to debate and refine the behavior; for now, I avoided
breaking regression tests as much as I could.
2002-04-11 20:00:18 +00:00
Peter Eisentraut 25f050d90d Make sure that usesuper is always accessed through superuser(), so that the
single-user escape path always works.
2002-04-11 05:32:03 +00:00
Tom Lane f2d70d32eb Functions live in namespaces. Qualified function names work, eg
SELECT schema1.func2(...).  Aggregate names can be qualified at the
syntactic level, but the qualification is ignored for the moment.
2002-04-09 20:35:55 +00:00
Tom Lane 0332d65ac4 Implement partial-key searching of syscaches, per recent suggestion
to pghackers.  Use this to do searching for ambiguous functions ---
it will get more uses soon.
2002-04-06 06:59:25 +00:00
Tom Lane 4bdb4be62e Divide functions into three volatility classes (immutable, stable, and
volatile), rather than the old cachable/noncachable distinction.  This
allows indexscan optimizations in many places where we formerly didn't.
Also, add a pronamespace column to pg_proc (it doesn't do anything yet,
however).
2002-04-05 00:31:36 +00:00
Bruce Momjian 958a1c2a0e Cleanup of level ordering and add missing LOG entry. 2002-04-04 04:43:44 +00:00
Bruce Momjian f5648c205c Add missing mention of 'log' option for client_min_messages. 2002-04-04 04:33:58 +00:00
Bruce Momjian 43a3543a4e Authentication improvements:
A new pg_hba.conf column, USER
Allow specifiction of lists of users separated by commas
Allow group names specified by +
Allow include files containing lists of users specified by @
Allow lists of databases, and database files
Allow samegroup in database column to match group name matching dbname
Removal of secondary password files
Remove pg_passwd utility
Lots of code cleanup in user.c and hba.c
New data/global/pg_pwd format
New data/global/pg_group file
2002-04-04 04:25:54 +00:00
Peter Eisentraut 867901db9e Locale support is on by default. The choice of locale is done in initdb
and/or with GUC variables.
2002-04-03 05:39:33 +00:00
Tom Lane 1dc43ea75f Make VACUUM handle schema-qualified relation names properly. 2002-04-02 01:03:07 +00:00
Tom Lane 789ddcb5fe Add tgconstrrelid to stored Trigger structures, make RI trigger functions
depend on this rather than the trigger argument strings to locate the
other relation to test.  This makes RI triggers function properly in
the presence of schemas and temp tables.  Along the way, fix bogus lack
of locking in RI triggers, handle quoting of names fully correctly,
compute required sizes of query buffers with some semblance of accuracy.
2002-04-01 22:36:13 +00:00
Tom Lane 838fe25a95 Create a new GUC variable search_path to control the namespace search
path.  The default behavior if no per-user schemas are created is that
all users share a 'public' namespace, thus providing behavior backwards
compatible with 7.2 and earlier releases.  Probably the semantics and
default setting will need to be fine-tuned, but this is a start.
2002-04-01 03:34:27 +00:00
Tom Lane 87b0808020 Temporary kluge to let RI triggers work on tables outside the system
catalog namespace.  This will not do as a production solution because
the interpretation of RI trigger arguments will vary depending on the
current namespace search path.  I'm just putting it in so that the RI
regression tests don't fail while schema development proceeds.  We
must find a better answer before 7.3 can be released.
2002-04-01 02:02:34 +00:00
Tom Lane 3114102521 Reimplement temp tables using schemas. The temp table map is history;
temp table entries in pg_class have the names the user would expect.
2002-03-31 06:26:32 +00:00
Tom Lane 5f4745adf4 Further cleanups for relations in schemas: teach nextval and other
sequence functions how to cope with qualified names.  Same code is
also used for int4notin, currtid_byrelname, pgstattuple.  Also,
move TOAST tables into special pg_toast namespace.
2002-03-30 01:02:42 +00:00
Tom Lane d5e99ab4d6 pg_type has a typnamespace column; system now supports creating types
in different namespaces.  Also, cleanup work on relation namespace
support: drop, alter, rename commands work for tables in non-default
namespaces.
2002-03-29 19:06:29 +00:00
Tom Lane 1dbf8aa7a8 pg_class has a relnamespace column. You can create and access tables
in schemas other than the system namespace; however, there's no search
path yet, and not all operations work yet on tables outside the system
namespace.
2002-03-26 19:17:02 +00:00
Tom Lane 10d3995057 EXPLAIN output now comes out as a query result, not a NOTICE message.
Also, fix debug logging of parse/plan trees so that the messages actually
go through elog(), not directly to stdout.
2002-03-24 04:31:09 +00:00
Tom Lane a25b94c080 Create the pg_namespace system catalog. Doesn't do much yet, but it's
there and CREATE SCHEMA will make entries in it...
2002-03-22 21:34:44 +00:00
Tom Lane 108a0ec87d A little further progress on schemas: push down RangeVars into
addRangeTableEntry calls.  Remove relname field from RTEs, since
it will no longer be a useful unique identifier of relations;
we want to encourage people to rely on the relation OID instead.
Further work on dumping qual expressions in EXPLAIN, too.
2002-03-22 02:56:37 +00:00
Tom Lane 56c9b73c1d Change the aclchk.c routines to uniformly use OIDs to identify the
objects to be privilege-checked.  Some change in their APIs would be
necessary no matter what in the schema environment, and simply getting
rid of the name-based interface entirely seems like the best way.
2002-03-21 23:27:25 +00:00
Tom Lane 95ef6a3448 First phase of SCHEMA changes, concentrating on fixing the grammar and
the parsetree representation.  As yet we don't *do* anything with schema
names, just drop 'em on the floor; but you can enter schema-compatible
command syntax, and there's even a primitive CREATE SCHEMA command.
No doc updates yet, except to note that you can now extract a field
from a function-returning-row's result with (foo(...)).fieldname.
2002-03-21 16:02:16 +00:00
Tom Lane 337b22cb47 Code review for DOMAIN patch. 2002-03-20 19:45:13 +00:00
Tom Lane 251282d4b7 Tweak behavior of array slicing operations: seems like it ought to be
okay to omit low-order dimensions when accessing an array slice.
2002-03-20 19:41:47 +00:00
Bruce Momjian d8e70cd829 Fix for trigger handling:
* We should not even consider checking the row if it is no longer
         * valid since it was either deleted (doesn't matter) or updated
         * (in which case it'll be checked with its final values).

Stephan Szabo
2002-03-19 02:57:15 +00:00
Bruce Momjian d3788c3305 Add DOMAIN support. Includes manual pages and regression tests, from
Rod Taylor.
2002-03-19 02:18:25 +00:00
Tom Lane 0f2fbbbac1 Try to make array_in's behavior a tad less bizarre. Leading whitespace
before a data item is now always skipped, rather than only sometimes.
Backslashes not within double-quoted text are treated reasonably, as
are multiple sequences of quoted text in a single data item.  But it
still seems rather prone to misbehavior if the input is not completely
syntactically correct --- in particular, garbage following a right brace
will be ignored.
2002-03-16 22:47:13 +00:00
Tom Lane 6eeb95f0f5 Restructure representation of join alias variables. An explicit JOIN
now has an RTE of its own, and references to its outputs now are Vars
referencing the JOIN RTE, rather than CASE-expressions.  This allows
reverse-listing in ruleutils.c to use the correct alias easily, rather
than painfully reverse-engineering the alias namespace as it used to do.
Also, nested FULL JOINs work correctly, because the result of the inner
joins are simple Vars that the planner can cope with.  This fixes a bug
reported a couple times now, notably by Tatsuo on 18-Nov-01.  The alias
Vars are expanded into COALESCE expressions where needed at the very end
of planning, rather than during parsing.
Also, beginnings of support for showing plan qualifier expressions in
EXPLAIN.  There are probably still cases that need work.
initdb forced due to change of stored-rule representation.
2002-03-12 00:52:10 +00:00
Tom Lane c422b5ca6b Code review for improved-hashing patch. Fix some portability issues
(char != unsigned char, Datum != uint32); make use of new hash code in
dynahash hash tables and hash joins.
2002-03-09 17:35:37 +00:00
Bruce Momjian fdcb8516d4 Wording improvements to runtime.sgml. Add mention in postgresql.conf
file that SIGHUP or "pg_ctl reload" are required for changes to take
affect on a running server.
2002-03-09 05:11:38 +00:00
Bruce Momjian ee81126d1f TODO item done:
* Change FIXED_CHAR_SEL to 0.20 from 0.04 to give better selectivity (Bruce)
2002-03-08 04:29:01 +00:00
Bruce Momjian b976b8af80 Back out domain patch until it works properly. 2002-03-07 16:35:41 +00:00
Bruce Momjian 7ab7467318 I've attached a patch which implements Bob Jenkin's hash function for
PostgreSQL. This hash function replaces the one used by hash indexes and
the catalog cache. Hash joins use a different, relatively poor-quality
hash function, but I'll fix that later.

As suggested by Tom Lane, this patch also changes the size of the fixed
hash table used by the catalog cache to be a power-of-2 (instead of a
prime: I chose 256 instead of 257). This allows the catcache to lookup
hash buckets using a simple bitmask. This should improve the performance
of the catalog cache slightly, since the previous method (modulo a
prime) was slow.

In my tests, this improves the performance of hash indexes by between 4%
and 8%; the performance when using btree indexes or seqscans is
basically unchanged.

Neil Conway <neilconway@rogers.com>
2002-03-06 20:49:46 +00:00
Bruce Momjian 01c76f7411 Ok. Updated patch attached.
- domain.patch -> source patch against pgsql in cvs
- drop_domain.sgml and create_domain.sgml -> New doc/src/sgml/ref docs

- dominfo.txt -> basic domain related queries I used for testing
[ ADDED TO /doc]

Enables domains of array elements -> CREATE DOMAIN dom int4[3][2];

Uses a typbasetype column to describe the origin of the domain.

Copies data to attnotnull rather than processing in execMain().

Some documentation differences from earlier.

If this is approved, I'll start working on pg_dump, and a \dD <domain>
option in psql, and regression tests.  I don't really feel like doing
those until the system table structure settles for pg_type.


CHECKS when added, will also be copied to to the table attributes.  FK
Constraints (if I ever figure out how) will be done similarly.  Both
will lbe handled by MergeDomainAttributes() which is called shortly
before MergeAttributes().

Rod Taylor
2002-03-06 20:35:02 +00:00
Bruce Momjian 3d9f865e94 Modify ALTER TABLE OWNER to change index ownership; code cleanup.
Neil Conway
2002-03-06 19:58:26 +00:00
Bruce Momjian e6227fd0ec Add missing Unicode multibyte files. 2002-03-06 06:12:59 +00:00
Bruce Momjian 92288a1cf9 Change made to elog:
o  Change all current CVS messages of NOTICE to WARNING.  We were going
to do this just before 7.3 beta but it has to be done now, as you will
see below.

o Change current INFO messages that should be controlled by
client_min_messages to NOTICE.

o Force remaining INFO messages, like from EXPLAIN, VACUUM VERBOSE, etc.
to always go to the client.

o Remove INFO from the client_min_messages options and add NOTICE.

Seems we do need three non-ERROR elog levels to handle the various
behaviors we need for these messages.

Regression passed.
2002-03-06 06:10:59 +00:00
Bruce Momjian a8bd7e1c6e > Tatsuo Ishii wrote:
> > > > It was made to cope with encoding such as an Asian bloc in 7.2Beta2.
> > > >
> > > > Added ServerEncoding
> > > >         Korean (JOHAB), Thai (WIN874),
> > > >         Vietnamese (TCVN), Arabic (WIN1256)
> > > >
> > > > Added ClientEncoding
> > > >         Simplified Chinese (GBK), Korean (UHC)
> > > >
> > > >
> > > >
> http://www.sankyo-unyu.co.jp/Pool/postgresql-7.2b2.newencoding.diff.tar.gz
> > > > (608K)
> > >
> > > Looks good.  I need some people to review this for me.
> >
> > For me they look good too. The only missing part is a
> > documentation. I will ask him to write it up. If he couldn't, I will
> > do it for him.
> > > The diff is 3mb
> > > but appears to address only additions to multibyte.  I have attached a
> > > list of files it modifies.  Also, look at the sizes of the mb/
> > > directory.  It is getting large:
> > >
> > >   4       ./CVS
> > >   6       ./Unicode/CVS
> > >   3433    ./Unicode
> > >   6197    .
> >
> > Yes. We definitely need the on-the-fly encoding addition capability:
> > i.e. CREATE CHRACTER SET in the future...
> > --
> > Tatsuo Ishii
> >
> >

Address chainge.

http://www.sankyo-unyu.co.jp/Pool/postgresql-7.2.newencoding.diff.gz

Add PsqlODBC and document ...etc patch.

Eiji Tokuya
2002-03-05 05:52:50 +00:00
Bruce Momjian 03194432de I attach a version of my toast-slicing patch, against current CVS
(current as of a few hours ago.)

This patch:

1. Adds PG_GETARG_xxx_P_SLICE() macros and associated support routines.

2. Adds routines in src/backend/access/tuptoaster.c for fetching only
necessary chunks of a toasted value. (Modelled on latest changes to
assume chunks are returned in order).

3. Amends text_substr and bytea_substr to use new methods. It now
handles multibyte cases -and should still lead to a performance
improvement in the multibyte case where the substring is near the
beginning of the string.

4. Added new command: ALTER TABLE tabname ALTER COLUMN colname SET
STORAGE {PLAIN | EXTERNAL | EXTENDED | MAIN} to parser and documented in
alter-table.sgml. (NB I used ColId as the item type for the storage
mode string, rather than a new production - I hope this makes sense!).
All this does is sets attstorage for the specified column.

4. AlterTableAlterColumnStatistics is now AlterTableAlterColumnFlags and
handles both statistics and storage (it uses the subtype code to
distinguish). The previous version of my patch also re-arranged other
code in backend/commands/command.c but I have dropped that from this
patch.(I plan to return to it separately).

5. Documented new macros (and also the PG_GETARG_xxx_P_COPY macros) in
xfunc.sgml. ref/alter_table.sgml also contains documentation for ALTER
COLUMN SET STORAGE.

John Gray
2002-03-05 05:33:31 +00:00
Tom Lane 653556cc26 If presented db path has a trailing slash, remove it to avoid generating
double slashes in generated filenames.  This is not strictly necessary
on standard Unixen, but I'm being a neatnik...
2002-03-04 04:45:27 +00:00
Tatsuo Ishii 3382fbb60d Fix bug in extract/date_part for milliseconds/miscroseconds and
timestamp/timestamptz combo. Now extract/date_part returns
seconds*1000 or 1000000 + fraction part as the manual stats.
regression test are also fixed.

See the thread in pgsql-hackers:

Subject: Re: [HACKERS] timestamp_part() bug?
Date: Sat, 02 Mar 2002 11:29:53 +0900
2002-03-04 03:55:50 +00:00
Tom Lane 36f693ec69 Further work on elog cleanup: fix some bogosities in elog's logic about
when to send what to which, prevent recursion by introducing new COMMERROR
elog level for client-communication problems, get rid of direct writes
to stderr in backend/libpq files, prevent non-error elogs from going to
client during the authentication cycle.
2002-03-04 01:46:04 +00:00