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path: root/src/backend/utils/adt/like.c
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* Add recursion depth protection to LIKE matching.Tom Lane2015-10-02
| | | | | Since MatchText() recurses, it could in principle be driven to stack overflow, although quite a long pattern would be needed.
* Update copyright for 2015Bruce Momjian2015-01-06
| | | | Backpatch certain files through 9.0
* pgindent run for 9.4Bruce Momjian2014-05-06
| | | | | This includes removing tabs after periods in C comments, which was applied to back branches, so this change should not effect backpatching.
* Update copyright for 2014Bruce Momjian2014-01-07
| | | | | Update all files in head, and files COPYRIGHT and legal.sgml in all back branches.
* Update copyrights for 2013Bruce Momjian2013-01-01
| | | | | Fully update git head, and update back branches in ./COPYRIGHT and legal.sgml files.
* Update copyright notices for year 2012.Bruce Momjian2012-01-01
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* Pass collations to functions in FunctionCallInfoData, not FmgrInfo.Tom Lane2011-04-12
| | | | | | | | | | | Since collation is effectively an argument, not a property of the function, FmgrInfo is really the wrong place for it; and this becomes critical in cases where a cached FmgrInfo is used for varying purposes that might need different collation settings. Fix by passing it in FunctionCallInfoData instead. In particular this allows a clean fix for bug #5970 (record_cmp not working). This requires touching a bit more code than the original method, but nobody ever thought that collations would not be an invasive patch...
* pgindent run before PG 9.1 beta 1.Bruce Momjian2011-04-10
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* Fix ILIKE to honor collation when working in single-byte encodings.Tom Lane2011-04-09
| | | | | | The original collation patch only fixed the multi-byte code path. This change also ensures that ILIKE's idea of the case-folding rules is exactly the same as str_tolower's.
* Per-column collation supportPeter Eisentraut2011-02-08
| | | | | | | | This adds collation support for columns and domains, a COLLATE clause to override it per expression, and B-tree index support. Peter Eisentraut reviewed by Pavel Stehule, Itagaki Takahiro, Robert Haas, Noah Misch
* Stamp copyrights for year 2011.Bruce Momjian2011-01-01
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* Remove cvs keywords from all files.Magnus Hagander2010-09-20
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* Update copyright for the year 2010.Bruce Momjian2010-01-02
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* Update copyright for 2009.Bruce Momjian2009-01-01
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* Update copyrights in source tree to 2008.Bruce Momjian2008-01-01
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* pgindent run for 8.3.Bruce Momjian2007-11-15
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* Go back to using a separate method for doing ILIKE for single byteAndrew Dunstan2007-09-22
| | | | | | | character encodings that doesn't involve calling lower(). This should cure the performance regression in this case complained of by Guillaume Smet. It still leaves the horrid performance for multi-byte encodings introduced in 8.2, but there's no obvious solution for that in sight.
* Fix regex, LIKE, and some other second-rank text-manipulation functionsTom Lane2007-09-21
| | | | | | to not cause needless copying of text datums that have 1-byte headers. Greg Stark, in response to performance gripe from Guillaume Smet and ITAGAKI Takahiro.
* Improve efficiency of LIKE/ILIKE code, especially for multi-byte charsets,Andrew Dunstan2007-06-02
| | | | | | | | | | | and most especially for UTF8. Remove unnecessary special cases for bytea processing and single-byte charset ILIKE. a ILIKE b is now processed as lower(a) LIKE lower(b) in all cases. The code is now considerably simpler. All comparisons are now performed byte-wise, and the text and pattern are also advanced byte-wise where it is safe to do so - essentially where a wildcard is not being matched. Andrew Dunstan, from an original patch by ITAGAKI Takahiro, with ideas from Tom Lane and Mark Mielke.
* Replace direct assignments to VARATT_SIZEP(x) with SET_VARSIZE(x, len).Tom Lane2007-02-27
| | | | | | | | | | | Get rid of VARATT_SIZE and VARATT_DATA, which were simply redundant with VARSIZE and VARDATA, and as a consequence almost no code was using the longer names. Rename the length fields of struct varlena and various derived structures to catch anyplace that was accessing them directly; and clean up various places so caught. In itself this patch doesn't change any behavior at all, but it is necessary infrastructure if we hope to play any games with the representation of varlena headers. Greg Stark and Tom Lane
* Update CVS HEAD for 2007 copyright. Back branches are typically notBruce Momjian2007-01-05
| | | | back-stamped for this.
* pgindent run for 8.2.Bruce Momjian2006-10-04
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* Change ILIKE to invoke lower() and then do plain LIKE comparison whenTom Lane2006-09-04
| | | | | | | working in a multibyte encoding. This fixes the problems exhibited in bug #1931 and other reports of ILIKE misbehavior in UTF8 encoding. It's a pretty grotty solution though --- should rethink how to do it after we install better locale support, someday.
* Update copyright for 2006. Update scripts.Bruce Momjian2006-03-05
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* Cosmetic code cleanup: fix a bunch of places that used "return (expr);"Neil Conway2006-01-11
| | | | | | rather than "return expr;" -- the latter style is used in most of the tree. I kept the parentheses when they were necessary or useful because the return expression was complex.
* Standard pgindent run for 8.1.Bruce Momjian2005-10-15
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* Suppress signed-vs-unsigned-char warnings.Tom Lane2005-09-24
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* At the head of wchareq, length of (multibyte) character is compared byBruce Momjian2005-05-25
| | | | | | | | | | using pg_mblen. Therefore, pg_mblen is executed many times, and it becomes a bottleneck. This patch makes a short cut, and reduces execution frequency of pg_mblen by comparing the first byte first. a_ogawa
* Tag appropriate files for rc3PostgreSQL Daemon2004-12-31
| | | | | | | | Also performed an initial run through of upgrading our Copyright date to extend to 2005 ... first run here was very simple ... change everything where: grep 1996-2004 && the word 'Copyright' ... scanned through the generated list with 'less' first, and after, to make sure that I only picked up the right entries ...
* Update copyright to 2004.Bruce Momjian2004-08-29
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* $Header: -> $PostgreSQL Changes ...PostgreSQL Daemon2003-11-29
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* Update copyrights to 2003.Bruce Momjian2003-08-04
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* pgindent run.Bruce Momjian2003-08-04
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* Error message editing in utils/adt. Again thanks to Joe Conway for doingTom Lane2003-07-27
| | | | the bulk of the heavy lifting ...
* Remove all traces of multibyte and locale options. Clean up commentsPeter Eisentraut2002-09-03
| | | | referring to "multibyte" where it really means character encoding.
* > Okay. When you get back to the original issue, the gold is hidden inBruce Momjian2002-09-02
| | | | | | | | | | | | > src/backend/optimizer/path/indxpath.c; see the "special indexable > operators" stuff near the bottom of that file. (It's a bit of a crock > that this code is hardwired there, and not somehow accessed through a > system catalog, but it's what we've got at the moment.) The attached patch re-enables a bytea right hand argument (as compared to a text right hand argument), and enables index usage, for bytea LIKE Joe Conway
* Remove #ifdef MULTIBYTE per hackers list discussion.Tatsuo Ishii2002-08-29
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* As suggested by Tom, this patch restricts the right-hand argument ofBruce Momjian2002-08-22
| | | | | | | | | | | bytealike to TEXT. This leaves like_escape_bytea() without anything to do, but I left it in place in anticipation of the eventual bytea pattern selectivity functions. If there is agreement that this would be the best long term solution, I'll take it as a TODO for 7.4. Joe Conway
* Update copyright to 2002.Bruce Momjian2002-06-20
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* pgindent run on all C files. Java run to follow. initdb/regressionBruce Momjian2001-10-25
| | | | tests pass.
* Optimization for single byte encodings.Tatsuo Ishii2001-10-04
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* > Here's a revised patch. Changes:Bruce Momjian2001-09-14
| | | | | | | | | | | | | | | | | | | | | | | | > > 1. Now outputs '\\' instead of '\134' when using encode(bytea, 'escape') > Note that I ended up leaving \0 as \000 so that there are no ambiguities > when decoding something like, for example, \0123. > > 2. Fixed bug in byteain which allowed input values which were not valid > octals (e.g. \789), to be parsed as if they were octals. > > Joe > Here's rev 2 of the bytea string support patch. Changes: 1. Added missing declaration for MatchBytea function 2. Added PQescapeBytea to fe-exec.c 3. Applies cleanly on cvs tip from this afternoon I'm hoping that someone can review/approve/apply this before beta starts, so I guess I'd vote (not that it counts for much) to delay beta a few days :-) Joe Conway
* pgindent run. Make it all clean.Bruce Momjian2001-03-22
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* Change Copyright from PostgreSQL, Inc to PostgreSQL Global Development Group.Bruce Momjian2001-01-24
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* Fix ILIKE bug (only in multi-byte case)Tatsuo Ishii2000-12-11
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* Reimplement LIKE/ESCAPE as operators so that indexscan optimizationTom Lane2000-09-15
| | | | | can still work, per recent discussion on pghackers. Correct some bugs in ILIKE implementation.
* Add multibyte support for both LIKE and ILIKETatsuo Ishii2000-08-22
| | | | Eliminate up-to-4-times memory allocation problem
* Reimplement MULTIBYTE support (oops). Not tested, but it does compile.Thomas G. Lockhart2000-08-09
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* Clean up code to remove the explicit backslash cruft.Thomas G. Lockhart2000-08-07
| | | | | If the backslash default is still wanted, just pass a backslash to MatchText() for the two-parameter callable routines.
* Implement LIKE/ESCAPE. Change parser to use like()/notlike()Thomas G. Lockhart2000-08-06
| | | | | | | | | | | | | | | | | | | | rather than the "~~" operator; this made it easy to add ESCAPE features. Implement ILIKE, NOT ILIKE, and the ESCAPE clause for them. afaict this is not MultiByte clean, but lots of other stuff isn't either. Fix up underlying support code for LIKE/NOT LIKE. Things should be faster and does not require internal string copying. Update regression test to add explicit checks for LIKE/NOT LIKE/ILIKE/NOT ILIKE. Remove colon and semi-colon operators as threatened in 7.0. Implement SQL99 COMMIT/AND NO CHAIN. Throw elog(ERROR) on COMMIT/AND CHAIN per spec since we don't yet support it. Implement SQL99 CREATE/DROP SCHEMA as equivalent to CREATE DATABASE. This is only a stopgap or demo since schemas will have another implementation soon. Remove a few unused production rules to get rid of warnings which crept in on the last commit. Fix up tabbing in some places by removing embedded spaces.
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