git.postgresql.org Git - postgresql.git/log
Tom Lane [Wed, 5 Feb 2003 17:41:33 +0000 (17:41 +0000)]
Replace regular expression package with Henry Spencer's latest version
(extracted from Tcl 8.4.1 release, as Henry still hasn't got round to
making it a separate library). This solves a performance problem for
multibyte, as well as upgrading our regexp support to match recent Tcl
and nearly match recent Perl.
Dave Cramer [Wed, 5 Feb 2003 11:12:39 +0000 (11:12 +0000)]
patch from Oliver Jowett to implement some of the jdbc3 methods
Update Hungarian FAQ, from Laszlo Hornyak
Revert doc change so we mention moving past the last row of a cursor.
Dave Cramer [Tue, 4 Feb 2003 11:01:52 +0000 (11:01 +0000)]
Applied Kris Jurkas patch to fix rollback and SQLException
Dave Cramer [Tue, 4 Feb 2003 10:44:37 +0000 (10:44 +0000)]
applied patch from Oliver Jowett
Barry Lind [Tue, 4 Feb 2003 10:09:32 +0000 (10:09 +0000)]
Two patches from Kris Jurka. One fixes a problem with incorrect type for double
and the other fixes a NPE in Statement.toString() under some circumstances.
The second patch was originally submitted by Oliver Jowett and updated by Kris
Barry Lind [Tue, 4 Feb 2003 09:20:12 +0000 (09:20 +0000)]
Patch from Nic Ferrier to add support for result sets being cursor based
so that rows can be fetched incrementally. This is enabled by using
setFetchSize()
Tom Lane [Tue, 4 Feb 2003 00:50:01 +0000 (00:50 +0000)]
Minor code cleanup: remove no-longer-useful pull_subplans() function,
and convert pull_agg_clause() into count_agg_clause(), which is a more
efficient way of doing what it's really being used for.
Tom Lane [Tue, 4 Feb 2003 00:48:23 +0000 (00:48 +0000)]
Detect duplicate aggregate calls and evaluate only one copy. This
speeds up some useful real-world cases like
SELECT x, COUNT(*) FROM t GROUP BY x HAVING COUNT(*) > 100.
Tom Lane [Mon, 3 Feb 2003 22:33:51 +0000 (22:33 +0000)]
#ifdef out stuff that shouldn't be compiled when not USE_SSL.
Curious that gcc doesn't complain about unreferenced static variables.
Tom Lane [Mon, 3 Feb 2003 21:15:45 +0000 (21:15 +0000)]
Determine the set of constraints applied to a domain at executor
startup, not in the parser; this allows ALTER DOMAIN to work correctly
with domain constraint operations stored in rules. Rod Taylor;
code review by Tom Lane.
Add mention of CURRENT_SCHEMA for object creation.
Don't print NO ACTION foreign key actions in dumps and psql \d.
Tom Lane [Mon, 3 Feb 2003 15:07:08 +0000 (15:07 +0000)]
Tweak planner and executor to avoid doing ExecProject() in table scan
nodes where it's not really necessary. In many cases where the scan node
is not the topmost plan node (eg, joins, aggregation), it's possible to
just return the table tuple directly instead of generating an intermediate
projection tuple. In preliminary testing, this reduced the CPU time
needed for 'SELECT COUNT(*) FROM foo' by about 10%.
Move pg_service.conf.sample to /interfaces/libpq.
Change MOVE LAST to MOVE ALL.
Standard says FETCH LAST is after last row, and we don't do that.
Tom Lane [Sun, 2 Feb 2003 23:46:38 +0000 (23:46 +0000)]
Implement EXPLAIN EXECUTE. By Neil Conway, with some kibitzing from
Tom Lane.
Tom Lane [Sun, 2 Feb 2003 19:48:20 +0000 (19:48 +0000)]
Update release history for 7.3.2.
Tom Lane [Sun, 2 Feb 2003 19:08:57 +0000 (19:08 +0000)]
Fix nodeUnique to behave correctly when reversing direction after reaching
either end of subplan results. This prevents misbehavior of cursors
on SELECT DISTINCT ... queries. Per bug report 1-Feb-02.
Tom Lane [Sat, 1 Feb 2003 22:09:26 +0000 (22:09 +0000)]
Remove restriction that cast functions cannot be volatile. This
restriction was debatable to begin with, but it has now become obvious
that it breaks forward-porting of user-defined types; contrib/lo being
the most salient example.
Tom Lane [Sat, 1 Feb 2003 22:06:59 +0000 (22:06 +0000)]
Cleaner solution to the problem of loading pre-7.3 dumps containing
columns of type lo (see contrib/lo). Rather than hacking the function
definitions on-the-fly, just modify the queries issued by FixupBlobRefs
so that they work even if CREATE CAST hasn't been issued.
Tom Lane [Sat, 1 Feb 2003 19:29:16 +0000 (19:29 +0000)]
Changes of 6-Sep-02 broke pg_restore's ability to recognize tar-format
files. Fix it.
Tom Lane [Sat, 1 Feb 2003 18:31:28 +0000 (18:31 +0000)]
Fix assign_session_authorization() to not be confused by all-numeric
user names. Per recent reports.
Tom Lane [Sat, 1 Feb 2003 00:22:12 +0000 (00:22 +0000)]
Prevent core dump from calling Tcl_DontCallWhenDeleted() with a null
interp pointer. Per report from Gerhard Hintermayer.
Tom Lane [Sat, 1 Feb 2003 00:07:03 +0000 (00:07 +0000)]
Apply ljb's patch to prevent both memory leak and core dump during
connection shutdown. This is a grotty workaround for a Tcl bug, but
said bug has been there long enough that I'm not holding my breath
for a real fix. Per discussions and testing from ljb and g.hintermayer.
Tom Lane [2003年1月31日 22:35:24 +0000 (22:35 +0000)]
Make plpython's spi_execute interface handle NULLs properly.
From Andrew Bosma.
Tom Lane [2003年1月31日 22:25:14 +0000 (22:25 +0000)]
Clean up plpython error reporting so that its regression test passes
with some amount of cleanliness. I see no need to report the internal
Python name rather than the SQL procedure name in error tracebacks.
Tom Lane [2003年1月31日 20:58:00 +0000 (20:58 +0000)]
Tweak bison build rules so that we get the same error messages from
bison 1.875 and later as we did from earlier bison releases. Eventually
we will probably want to adopt the newer message spelling ... but not yet.
Per recent discussion on pgpatches.
Note: I didn't change the build rules for bootstrap, ecpg, or plpgsql
grammars, since these do not affect regression test results.
Tom Lane [2003年1月31日 01:08:08 +0000 (01:08 +0000)]
Allow a time zone to be specified (and silently ignored) in the input
for type 'time without time zone', as we already did for type
'timestamp without time zone'. This patch was proposed by Tom Lockhart
on 7-Nov-02, but he never got around to applying it. Adjust regression
tests and documentation to match.
Tom Lane [2003年1月31日 00:31:53 +0000 (00:31 +0000)]
Handle mixed-case names properly in plpgsql_parse_tripwordtype.
From Neil Conway.
Tom Lane [2003年1月31日 00:10:51 +0000 (00:10 +0000)]
Fix typo, per Neil Conway.
Tom Lane [2003年1月30日 19:49:54 +0000 (19:49 +0000)]
Fix regression in .pgpass support. From Neil Conway.
Tom Lane [2003年1月29日 22:14:08 +0000 (22:14 +0000)]
Update release history for 7.2.4.
Tom Lane [2003年1月29日 15:24:46 +0000 (15:24 +0000)]
SPI_exec shouldn't return SPI_OK_SELECT if it hasn't actually returned
a tuple table. Fixes core dump in pltcl (and probably other PLs) when
executing a query rewritten by a rule. Per bug report from Wolfgang Walter.
Update release steps.
Tom Lane [2003年1月29日 01:28:33 +0000 (01:28 +0000)]
Tweak ArrayCount() to forestall possible access to temp[-1]. Problem
cannot actually happen at present because ArrayCount() is only called
on strings beginning with '{', but seems best to prevent it going forward.
Per report from Yichen Xie.
Tom Lane [2003年1月29日 01:18:21 +0000 (01:18 +0000)]
Guard against array overrun, per report from Yichen Xie. This case
can only occur if the constant DEFAULT_CLIENT_AUTHSVC is given a bogus
value, so it doesn't seem worth back-patching, but I'll fix it in HEAD.
Tom Lane [2003年1月29日 01:08:42 +0000 (01:08 +0000)]
Repair array subscript overrun identified by Yichen Xie. Reduce the
value of MAX_TIME_PRECISION in floating-point-timestamp-storage case
from 13 to 10, which is as much as time_out is actually willing to print.
(The alternative of increasing the number of digits we are willing to
print looks risky; we might find ourselves printing roundoff garbage.)
Tom Lane [2003年1月29日 01:01:05 +0000 (01:01 +0000)]
Fix array subscript overruns identified by Yichen Xie.
Tom Lane [2003年1月28日 22:13:41 +0000 (22:13 +0000)]
Extend join-selectivity API (oprjoin interface) so that join type is
passed to join selectivity estimators. Make use of this in eqjoinsel
to derive non-bogus selectivity for IN clauses. Further tweaking of
cost estimation for IN.
initdb forced because of pg_proc.h changes.
Factor out the code that detects the long long int snprintf format into a
separate macro. Also add support for %I64d which is the way on Windows.
The code that checks for the 64-bit int type now gives more reasonable
results when cross-compiling: In that case we just take the compiler's
information and trust that the arithmetic works. Disabling int64 is too
pessimistic.
Tom Lane [2003年1月28日 18:04:02 +0000 (18:04 +0000)]
Convert variable name to canonical spelling before checking for matches
in GUCArrayAdd/GUCArrayDelete. This prevents the multiple-entry bug
exhibited by Frank Lupo 28-Jan-2003.
Revert off setting mention for client_min_messages.
Set log_min_error_messages to the proper and agreed-upon default, PANIC
(off). (BACKPATCH)
Revert optimizer page count change.
Set log_min_error_messages to the proper and agreed-upon default, PANIC (off).
Backpatch to 7.3.X.
Add blank line.
Move:
> * Add the concept of dataspaces/tablespaces [tablespaces]
307d307
< * Add the concept of dataspaces/tablespaces [tablespaces]
Fix typo 233 pages -> 333 pages.
Tom Lane [2003年1月27日 20:51:54 +0000 (20:51 +0000)]
Upgrade cost estimation for joins, per discussion with Bradley Baetz.
Try to model the effect of rescanning input tuples in mergejoins;
account for JOIN_IN short-circuiting where appropriate. Also, recognize
that mergejoin and hashjoin clauses may now be more than single operator
calls, so we have to charge appropriate execution costs.
Remove mention of 6.5 max backends.
Tom Lane [2003年1月27日 00:51:06 +0000 (00:51 +0000)]
Get rid of last few unadorned 'permission denied' messages.
Tom Lane [2003年1月27日 00:23:38 +0000 (00:23 +0000)]
Prevent core dump when die_horribly() is called with null AH pointer.
Problem reported and fixed by Oliver Elphick.
Mark IN performance problem as fixed in 7.4
Include IPv6 addresses in pg_hba.conf even if IPv6 is not supported; at
suggestion of Peter.
Add:
> * Add group object ownership, so groups can rename/drop/grant on objects,
> so we can implement roles
Tom Lane [2003年1月25日 23:10:30 +0000 (23:10 +0000)]
Allow the planner to collapse explicit inner JOINs together, rather than
necessarily following the JOIN syntax to develop the query plan. The old
behavior is still available by setting GUC variable JOIN_COLLAPSE_LIMIT
to 1. Also create a GUC variable FROM_COLLAPSE_LIMIT to control the
similar decision about when to collapse sub-SELECT lists into their parent
lists. (This behavior existed already, but the limit was always
GEQO_THRESHOLD/2; now it's separately adjustable.)
Tom Lane [2003年1月25日 05:19:47 +0000 (05:19 +0000)]
Where available, use utime() or utimes() to update the file mod time
of the socket file and socket lock file; this should prevent both of them
from being removed by even the stupidest varieties of /tmp-cleaning
script. Per suggestion from Giles Lean.
Tom Lane [2003年1月25日 03:06:04 +0000 (03:06 +0000)]
Use stat(2) to probe for existing xlog segments in InstallXLogFileSegment,
rather than actually opening the files. This eliminates some corner cases
where the file indeed exists but open() fails for another reason, such
as being out of file descriptors. The net reliability gain is probably
tiny, since xlog.c is full of other file open calls that will elog(PANIC)
if they fail for any reason; but this specific failure mode has been
observed in the field, so we may as well fix it.
Tom Lane [2003年1月24日 21:53:29 +0000 (21:53 +0000)]
Suppress gcc warnings.
Tom Lane [2003年1月24日 03:58:44 +0000 (03:58 +0000)]
Modify planner's implied-equality-deduction code so that when a set
of known-equal expressions includes any constant expressions (including
Params from outer queries), we actively suppress any 'var = var'
clauses that are or could be deduced from the set, generating only the
deducible 'var = const' clauses instead. The idea here is to push down
the restrictions implied by the equality set to base relations whenever
possible. Once we have applied the 'var = const' clauses, the 'var = var'
clauses are redundant, and should be suppressed both to save work at
execution and to avoid double-counting restrictivity.
Grant options, and cascading revoke. Grant options are allowed only for
users right now, not groups. Extension of has_foo_privileges functions to
query the grant options. Extension of aclitem type to store grantor.
added fix from Joel Hock to get the inserted row into the current buffer
Tom Lane [2003年1月23日 15:18:40 +0000 (15:18 +0000)]
Fix obsolete error message (isImmutable doesn't exist).
Tom Lane [2003年1月23日 05:10:41 +0000 (05:10 +0000)]
Change CREATE TABLE AS / SELECT INTO to create the new table with OIDs,
for backwards compatibility with pre-7.3 behavior. Per discussion on
pgsql-general and pgsql-hackers.
Tom Lane [2003年1月23日 01:22:59 +0000 (01:22 +0000)]
Update 'Mathematical Functions' table to reflect 7.3 addition of float8
forms of ceil(), floor(), sign(). Back-patch this and other recent
doc fixes in this file to the 7.3 branch.
Tom Lane [2003年1月22日 20:44:20 +0000 (20:44 +0000)]
Fix sloppy comment.
Tom Lane [2003年1月22日 20:16:42 +0000 (20:16 +0000)]
Make estimation of mergejoin scan selectivities more robust, per recent
example from RaÇl GutiÅrrez.
Tom Lane [2003年1月22日 19:26:35 +0000 (19:26 +0000)]
Improve print_expr() a little. It's still not very bright though.
Tom Lane [2003年1月22日 00:07:00 +0000 (00:07 +0000)]
Implement choice between hash-based and sort-based grouping for doing
DISTINCT processing on the output of an IN sub-select.
Tom Lane [2003年1月21日 22:06:12 +0000 (22:06 +0000)]
Fix coredump problem in plpgsql's RETURN NEXT. When a SELECT INTO
that's selecting into a RECORD variable returns zero rows, make it
assign an all-nulls row to the RECORD; this is consistent with what
happens when the SELECT INTO target is not a RECORD. In support of
this, tweak the SPI code so that a valid tuple descriptor is returned
even when a SPI select returns no rows.
Synced parser.
Tom Lane [2003年1月21日 19:44:26 +0000 (19:44 +0000)]
Avoid gratuitous variation in spelling of same error message.
Fix sed expression for BSD sed.
Tom Lane [2003年1月20日 18:55:07 +0000 (18:55 +0000)]
IN clauses appearing at top level of WHERE can now be handled as joins.
There are two implementation techniques: the executor understands a new
JOIN_IN jointype, which emits at most one matching row per left-hand row,
or the result of the IN's sub-select can be fed through a DISTINCT filter
and then joined as an ordinary relation.
Along the way, some minor code cleanup in the optimizer; notably, break
out most of the jointree-rearrangement preprocessing in planner.c and
put it in a new file prep/prepjointree.c.
This patch includes a lot of minor cleanups to the SGML documentation,
including:
- replacing all the appropriate usages of <citetitle>PostgreSQL
...</citetitle> with &cite-user;, &cite-admin;, and so on
- fix an omission in the EXECUTE documentation
- add some more text to the EXPLAIN documentation
- improve the PL/PgSQL RETURN NEXT documentation (more work to do here)
- minor markup fixes
Neil Conway
Improve symlink handling for C tags file.
Add section on testing index scan.
Add dash to:
set-returning functions or SRF's.
for clarity.
Tom Lane [2003年1月17日 03:25:04 +0000 (03:25 +0000)]
Fix parse_agg.c to detect ungrouped Vars in sub-SELECTs; remove code
that used to do it in planner. That was an ancient kluge that was
never satisfactory; errors should be detected at parse time when possible.
But at the time we didn't have the support mechanism (expression_tree_walker
et al) to make it convenient to do in the parser.
Tom Lane [2003年1月17日 02:01:21 +0000 (02:01 +0000)]
Adjust API of expression_tree_mutator and query_tree_mutator to
simplify callers. It turns out the common case is that the caller
does want to recurse into sub-queries, so push support for that into
these subroutines.
Tom Lane [2003年1月16日 21:01:45 +0000 (21:01 +0000)]
Add code to print information about a detected deadlock cycle. The
printed data is comparable to what you could read in the pg_locks view,
were you fortunate enough to have been looking at it at the right time.
Tom Lane [2003年1月16日 18:26:02 +0000 (18:26 +0000)]
Ooops, didn't cut-and-paste quite enough code from ResolveNew;
with result that flatten_join_alias_vars failed to descend into subselects.
Tom Lane [2003年1月16日 15:27:59 +0000 (15:27 +0000)]
Fix bogus formatting of DROP DATABASE command, per Christopher Kings-Lynne.
Tom Lane [2003年1月16日 00:26:49 +0000 (00:26 +0000)]
Repair an embarrassingly large number of alphabetization mistakes in the
datetime token tables. Even more embarrassing, the regression tests
revealed some of the problems --- but evidently the bogus output wasn't
questioned. Add code to postmaster startup to directly check the tables
for correct ordering, in hopes of not being embarrassed like this again.
Add remaining documentation tables to information schema.
Tom Lane [2003年1月15日 23:10:32 +0000 (23:10 +0000)]
Now that switch_outer processing no longer relies on being run after
join_references(), it's practical to consolidate all join_references()
processing into the set_plan_references traversal in setrefs.c. This
seems considerably cleaner than the old way where we did it for join
quals in createplan.c and for targetlists in setrefs.c.
Oops, put back changes. Those were Peter's, not mine.
Revert my changes to features.sgml.
More comment cleanups for shared_buffers in postgresql.conf.
Update shared_buffer comment in postgresql.conf.
Back out ORDER BY addition to Inet, for Tom.
Tom Lane [2003年1月15日 19:35:48 +0000 (19:35 +0000)]
Allow merge and hash joins to occur on arbitrary expressions (anything not
containing a volatile function), rather than only on 'Var = Var' clauses
as before. This makes it practical to do flatten_join_alias_vars at the
start of planning, which in turn eliminates a bunch of klugery inside the
planner to deal with alias vars. As a free side effect, we now detect
implied equality of non-Var expressions; for example in
SELECT ... WHERE a.x = b.y and b.y = 42
we will deduce a.x = 42 and use that as a restriction qual on a. Also,
we can remove the restriction introduced 12/5/02 to prevent pullup of
subqueries whose targetlists contain sublinks.
Still TODO: make statistical estimation routines in selfuncs.c and costsize.c
smarter about expressions that are more complex than plain Vars. The need
for this is considerably greater now that we have to be able to estimate
the suitability of merge and hash join techniques on such expressions.
Reorder VARCHAR() to appear before CHAR() in docs.
This patch fixes an incorrect statement and makes a few cleanups to
contrib/fulltextindex/README.fti
Backpatched to 7.3.X too.
Neil Conway
This patch includes some minor fixes and improvements to the SGML docs
for PL/PgSQL.
Neil Conway
Add ORDER BY for inet regression, pointed out by Rod Taylor.
Add sql_features table to information schema. Generate the features list
in the documentation from that same data.
Readd #include netinet/in.h for FreeBSD.
Escape ampersand.
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