- 17 2月, 2000 2 次提交
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由 Tom Lane 提交于
selectivity functions and make the r-tree operators use them. The estimation functions themselves are just stubs, unfortunately, but perhaps someday someone will make them compute realistic estimates. Change pg_am so that the optimizer can reliably tell the difference between ordered and unordered indexes --- before it would think that an r-tree index can be scanned in '<<' order, which is not right AFAIK. Repair broken negator links for network_sup and related ops. Initdb forced. This might be my last initdb force for 7.0 ... hope so anyway ...
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由 Thomas G. Lockhart 提交于
Transform datetime and timespan into timestamp and interval. Deprecate datetime and timespan, though translate to new types in gram.y. Transform all datetime and timespan catalog entries into new types. Make "INTERVAL" reserved word allowed as a column identifier in gram.y. Remove dt.h, dt.c files, and retarget datetime.h, datetime.c as utility routines for all date/time types. date.{h,c} now deals with date, time types. timestamp.{h,c} now deals with timestamp, interval types. nabstime.{h,c} now deals with abstime, reltime, tinterval types. Make NUMERIC a known native type for purposes of type coersion. Not tested.
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- 16 2月, 2000 1 次提交
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由 Tom Lane 提交于
accesses versus sequential accesses, a (very crude) estimate of the effects of caching on random page accesses, and cost to evaluate WHERE- clause expressions. Export critical parameters for this model as SET variables. Also, create SET variables for the planner's enable flags (enable_seqscan, enable_indexscan, etc) so that these can be controlled more conveniently than via PGOPTIONS. Planner now estimates both startup cost (cost before retrieving first tuple) and total cost of each path, so it can optimize queries with LIMIT on a reasonable basis by interpolating between these costs. Same facility is a win for EXISTS(...) subqueries and some other cases. Redesign pathkey representation to achieve a major speedup in planning (I saw as much as 5X on a 10-way join); also minor changes in planner to reduce memory consumption by recycling discarded Path nodes and not constructing unnecessary lists. Minor cleanups to display more-plausible costs in some cases in EXPLAIN output. Initdb forced by change in interface to index cost estimation functions.
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- 11 2月, 2000 1 次提交
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由 Bruce Momjian 提交于
Don Baccus
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- 31 1月, 2000 1 次提交
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由 Jan Wieck 提交于
Jan
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- 26 1月, 2000 2 次提交
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由 Bruce Momjian 提交于
* Portions Copyright (c) 1996-2000, PostgreSQL, Inc to all files copyright Regents of Berkeley. Man, that's a lot of files.
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由 Bruce Momjian 提交于
family functions. Contain: conversion from a datetype to formatted text: to_char( datetime, text) to_char( timestamp, text) to_char( int4, text) to_char( int8, text) to_char( float4, text) to_char( float8, text) to_char( numeric, text) vice versa: to_date ( text, text) to_datetime ( text, text) to_timestamp ( text, text) to_number ( text, text) (convert to numeric) PostgreSQL to_char is very compatible with Oracle's to_char(), but not total exactly (now). Small differentions are in number formating. It will fix in next to_char() version. ! If will this patch aplly to the main tree, must be delete the current to_char version in contrib (directory "dateformat" and note in contrib's README), this patch not erase it (sorry Bruce). The patch patching files: doc/src/sgml/func.sgml ^^^^^^^^ Hmm, I'm not sure if my English... :( Check it anyone (volunteer)? Thomas, it is right? SGML is not my primary lang and compile the current PG docs tree is very happy job (hard variables setting in docs/sgml/Makefile --> HSTYLE= /home/users/t/thomas/.... :-) What add any definition to global configure.in and set Makefiles in docs tree via ./configure? src/backend/utils/adt/Makefile src/backend/utils/adt/formatting.c src/include/catalog/pg_proc.h src/include/utils/formatting.h Karel Zak <zakkr@zf.jcu.cz> http://home.zf.jcu.cz/~zakkr/
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- 24 1月, 2000 1 次提交
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由 Tom Lane 提交于
(ie, WHERE x > lowbound AND x < highbound). It's not very bright yet but it does something useful. Also, rename intltsel/intgtsel to scalarltsel/scalargtsel to reflect usage better. Extend convert_to_scalar to do something a little bit useful with string data types. Still need to make it do something with date/time datatypes, but I'll wait for Thomas's datetime unification dust to settle first. Eventually the routine ought not have any type-specific knowledge at all; it ought to be calling a type-dependent routine found via a pg_type column; but that's a task for another day.
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- 23 1月, 2000 1 次提交
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由 Tom Lane 提交于
pghackers discussion of 5-Jan-2000. The amopselect and amopnpages estimators are gone, and in their place is a per-AM amcostestimate procedure (linked to from pg_am, not pg_amop).
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- 18 1月, 2000 1 次提交
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由 Tatsuo Ishii 提交于
pg_char_to_encoding() pg_encoding_to_char()
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- 17 1月, 2000 1 次提交
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由 Tom Lane 提交于
data in its pg_proc entry. abs() doesn't require two arguments, last I heard.
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- 11 1月, 2000 1 次提交
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由 Bruce Momjian 提交于
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- 07 1月, 2000 1 次提交
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由 Jan Wieck 提交于
in trigger manager. Jan
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- 28 12月, 1999 1 次提交
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由 Jan Wieck 提交于
Jan
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- 12 12月, 1999 1 次提交
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由 Bruce Momjian 提交于
* Document/trigger/rule so changes to pg_shadow recreate pg_pwd I did it with a trigger and it seems to work like a charm. The function that already updates the file for create and alter user has been made a built-in "SQL" function and a trigger is created at initdb time. Comments around the pg_pwd updating function seem to be worried about this routine being called concurrently, but I really don't see a reason to worry about this. Verify for yourself. I guess we never had a system trigger before, so treat this with care, and feel free to adjust the nomenclature as well. -- Peter Eisentraut Sernanders väg 10:115
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- 02 12月, 1999 1 次提交
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由 Bruce Momjian 提交于
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- 25 11月, 1999 1 次提交
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由 Jan Wieck 提交于
comparision functions. Added all lztext comparision functions, operators and a default operator class for nbtree on lztext. Jan
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- 18 11月, 1999 1 次提交
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由 Jan Wieck 提交于
Jan
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- 11 10月, 1999 1 次提交
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由 Hiroshi Inoue 提交于
Now WHERE restriction on ctid is allowed though it is sequentially scanned.
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- 30 9月, 1999 2 次提交
- 26 9月, 1999 1 次提交
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由 Tom Lane 提交于
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.
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- 29 8月, 1999 1 次提交
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由 Tom Lane 提交于
and 1370 (timestamp(datetime)). This does not force an initdb, exactly, but you won't see the effects of the bug fix until you do one. BTW, OID 1358 for timespan(time) is still broken: select timespan('21:11:26'::time); ERROR: No such function 'time_timespan' with the specified attributes But I couldn't figure out what it ought to be defined as, so I left it be.
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- 16 7月, 1999 1 次提交
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由 Bruce Momjian 提交于
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- 26 5月, 1999 1 次提交
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由 Bruce Momjian 提交于
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- 09 5月, 1999 1 次提交
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由 Tom Lane 提交于
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- 04 5月, 1999 1 次提交
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由 Bruce Momjian 提交于
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
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- 20 4月, 1999 1 次提交
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由 Tom Lane 提交于
pg_proc entries for array I/O routines besides the one detected by the original patcher. Tighten type_sanity regress test accordingly.
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- 14 4月, 1999 1 次提交
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由 Bruce Momjian 提交于
actually takes three. Please apply the following patch. Massimo
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- 29 3月, 1999 1 次提交
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由 Tom Lane 提交于
function is found in prosrc field of pg_proc, not proname. This allows multiple aliases of a built-in to all be implemented as direct builtins, without needing a level of indirection through an SQL function. Replace existing SQL alias functions with builtin entries accordingly. Save a few K by not storing string names of builtin functions in fmgr's internal table (if you really want 'em, get 'em from pg_proc...). Update opr_sanity with a few more cross-checks.
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- 28 3月, 1999 1 次提交
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由 Tom Lane 提交于
and newly expanded opr_sanity tests.
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- 15 3月, 1999 1 次提交
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由 Bruce Momjian 提交于
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- 14 3月, 1999 1 次提交
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由 Bruce Momjian 提交于
I would like some feedback on what the hash function for the int8 hash function in the ./backend/access/hash/hashfunc.c should return. Also, could someone (maybe Tomas Lockhart?) look-over the patch and make sure the system table entries are correct? I've tried to research them as much as I could, but some of them are still not clear to me. Thanks, -Ryan
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- 10 3月, 1999 1 次提交
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由 Tom Lane 提交于
and pg_operator. The lone error in pg_operator was reported as a bug by Michael Reifenberger; the multiple errors in pg_proc would only have been noticed if one invoked the functions by name rather than using operator syntax. I guess few people do that.
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- 14 2月, 1999 1 次提交
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由 Bruce Momjian 提交于
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- 13 2月, 1999 1 次提交
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由 Thomas G. Lockhart 提交于
Fix output type for int8out, but I don't think it matters.
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- 31 12月, 1998 1 次提交
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由 Jan Wieck 提交于
and aggregates. Jan
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- 14 12月, 1998 1 次提交
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由 Thomas G. Lockhart 提交于
Fix one usage of substr() which mapped to the "Oracle compatibility" funcs rather than the more recent (and closer to SQL92) function in varlena.c. Add more DESC() entries for conversion functions.
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- 08 12月, 1998 1 次提交
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由 Thomas G. Lockhart 提交于
Extend new type coersion techniques to aggregates.
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- 17 11月, 1998 1 次提交
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由 Thomas G. Lockhart 提交于
This will fix the problem reported by Jose' Soares when trying to cast a float to text.
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