89:: Users expect information retrieval systems to be able to have correct case sensitivity depending on the nature of an operation. Users looking for the word "dog" in an online journal probably do not wish to differentiate between "dog" or "Dog", as this is a writing distinction; the word should be matched whether it appears at the beginning of a sentence or not. On the other hand, users looking for information about a brand name, trademark, human name, or city name may be interested in performing a case-sensitive operation to filter out irrelevant results. For example, somebody searching for the name "Jade" would not want to find references to the mineral called "jade". On the English Knowledge for example a search for
31:
383:
are internally case-sensitive, and a readme.txt and a Readme.txt can coexist in the same directory. However, for practical purposes filenames behave as case-insensitive as far as users and most software are concerned. This can cause problems for developers or software coming from Unix-like
296:
A text search operation could be case-sensitive or case-insensitive, depending on the system, application, or context. The user can in many cases specify whether a search is sensitive to case, e.g. in most text editors, word processors, and Web browsers. A case-insensitive search is more
297:
comprehensive, finding "Language" (at the beginning of a sentence), "language", and "LANGUAGE" (in a title in capitals); a case-sensitive search will find the computer language "BASIC" but exclude most of the many unwanted instances of the word. For example, the
348:, because most file systems in other Unix-like environments are case-sensitive, and, for example, a source code tree for software for Unix-like systems might have both a file named Makefile and a file named makefile in the same directory. In addition, some Mac
284:, for example, variable names are case-sensitive but function names are not case-sensitive. This means that if a function is defined in lowercase, it can be called in uppercase, but if a variable is defined in lowercase, it cannot be referred to in uppercase.
103:: Authentication systems usually treat usernames as case-insensitive to make them easier to remember, reducing typing complexity, and eliminate the possibility of both mistakes and
74:, for example, or something with no ambiguity regarding capitalization and ambiguity between two or more terms cut down by capitalization, they may prefer a case-sensitive search.
344:
mode (so that a file created as readme.txt is shown as readme.txt and a file created as Readme.txt is shown as Readme.txt) by default. This causes some issues for developers and
70:, "dog" and "Dog" are of the same significance to them. Thus, they request a case-insensitive search. But when they search an online encyclopedia for information about the
367:
were case-insensitive and not case-preserving, so that a file whose name is entered as readme.txt or ReadMe.txt is saved as README.TXT. Later, with
107:
when two usernames are identical in every aspect except the case of one of their letters. However, these systems are not case-blind. They
117:: Authentication systems usually treat passwords as case-sensitive. This enables the users to increase the complexity of their passwords.
349:
328:
systems, filenames are usually case-sensitive (there can be separate readme.txt and Readme.txt files in the same directory).
141:: Some programming languages are case-sensitive for their variable names while others are not. For more details, see below.
508:
472:
646:
524:
265:
201:
94:
17:
253:
213:
277:
217:
400:
The link "Friendly Fire" must go through the (disambiguation) qualifier in a
Knowledge article to avoid a
209:
197:
340:
in a case-insensitive (so that there cannot be a readme.txt and a Readme.txt in the same directory) but
459:
306:
285:
225:
86:
621:
273:
316:, from the idea of folding the character code table so that upper- and lowercase letters coincide.
189:
681:
596:
138:
464:
185:
500:
492:
120:
249:
8:
573:
582:
488:
438:
504:
468:
341:
132:
128:
108:
305:
SQL most operations and searches are case-sensitive by default, while in most other
301:
engine is basically case-insensitive, with no option for case-sensitive search. In
288:
is case-insensitive and ignores underscores, as long as the first characters match.
548:
401:
43:
450:
302:
384:
environments, similar to the problems with macOS case-insensitive file systems.
549:"case-sensitive-search - case sensitive google search - Google Project Hosting"
454:
376:
163:
sections of a URL may or may not be case-sensitive, depending on the receiving
71:
675:
298:
276:, in which the capitalisation of an identifier encodes information about its
90:
104:
375:
the FAT file systems became case-preserving as an extension of supporting
654:
345:
261:
237:
55:
111:
so that users may choose an aesthetically pleasing username combination.
66:). For instance, when users interested in learning about dogs search an
30:
372:
164:
27:
Defines whether uppercase and lowercase letters are treated as distinct
414:
325:
280:. Some other programming languages have varying case sensitivity; in
233:
124:
39:
35:
352:
assume case insensitivity and fail on case-sensitive file systems.
333:
220:). Others are case-insensitive (i.e., not case-sensitive), such as
114:
100:
241:
205:
457:(February 1978). "Chapter 2: Types, Operators and Expressions".
356:
269:
67:
463:(1st ed.). Englewood Cliffs, NJ: Prentice Hall. p.
364:
360:
329:
229:
193:
413:
Although one can explicitly set a single database or column
622:"Case Sensitivity in Subsystem for UNIX-based Applications"
380:
368:
337:
257:
248:(for the syntax, and for some vendor implementations, e.g.
221:
127:
operating systems treat file names case-sensitively while
281:
245:
144:
42:"A" are the two case variants of the first letter in the
82:
Case sensitivity may differ depending on the situation:
97:(capitalized "Fire") returns the disambiguation page.
312:Case-insensitive operations are sometimes said to
332:is somewhat unusual in that, by default, it uses
309:'s SQL searches are case-insensitive by default.
673:
449:
131:is case-insensitive but, for most file systems,
109:preserve the case of the characters in the name
647:"Filenames are Case Sensitive on NTFS Volumes"
575:Oracle SQL Developer User's Guide, Release 1.5
597:"C.5.5.1 Case Sensitivity in String Searches"
179:
188:are case-sensitive for their identifiers (
487:
572:"2.10 Making Queries Case Insensitive".
499:(1st ed.). O'Reilly Media. p.
443:
77:
29:
175:parts, however, are strictly lowercase.
14:
674:
379:. Later Windows file systems such as
264:. There are also languages, such as
24:
25:
693:
525:"Nim Manual: Identifier Equality"
319:
291:
93:returns the military article but
58:letters are treated as distinct (
639:
614:
589:
565:
541:
517:
481:
431:
407:
394:
135:. For more details, see below.
13:
1:
424:
653:. 2006-11-01. Archived from
493:"Chapter 2: Language Basics"
7:
10:
698:
601:MySQL 5.0 Reference Manual
460:The C Programming Language
387:
180:In programming languages
56:uppercase and lowercase
47:
186:programming languages
78:Areas of significance
33:
417:to be case-sensitive
250:Microsoft SQL Server
232:(an exception being
489:Matsumoto, Yukihiro
451:Kernighan, Brian W.
252:, the data itself)
583:Oracle Corporation
529:nim-lang.github.io
497:Ruby in a nutshell
455:Ritchie, Dennis M.
324:In filesystems in
48:
651:Microsoft Support
129:Microsoft Windows
123:: Traditionally,
62:) or equivalent (
16:(Redirected from
689:
666:
665:
663:
662:
643:
637:
636:
634:
633:
618:
612:
611:
609:
608:
593:
587:
586:
580:
569:
563:
562:
560:
559:
545:
539:
538:
536:
535:
521:
515:
514:
491:(January 2002).
485:
479:
478:
447:
441:
435:
418:
411:
405:
398:
64:case-insensitive
54:defines whether
52:case sensitivity
44:English alphabet
21:
697:
696:
692:
691:
690:
688:
687:
686:
672:
671:
670:
669:
660:
658:
657:on Jul 23, 2013
645:
644:
640:
631:
629:
626:Microsoft Learn
620:
619:
615:
606:
604:
595:
594:
590:
578:
571:
570:
566:
557:
555:
553:code.google.com
547:
546:
542:
533:
531:
523:
522:
518:
511:
486:
482:
475:
448:
444:
436:
432:
427:
422:
421:
412:
408:
399:
395:
390:
342:case-preserving
322:
294:
182:
133:case-preserving
80:
28:
23:
22:
15:
12:
11:
5:
695:
685:
684:
682:Capitalization
668:
667:
638:
613:
588:
585:. August 2013.
564:
540:
516:
509:
480:
473:
442:
429:
428:
426:
423:
420:
419:
406:
392:
391:
389:
386:
377:long filenames
321:
320:In filesystems
318:
293:
292:In text search
290:
181:
178:
177:
176:
142:
139:Variable names
136:
118:
112:
98:
79:
76:
72:United Nations
60:case-sensitive
50:In computers,
26:
18:Case sensitive
9:
6:
4:
3:
2:
694:
683:
680:
679:
677:
656:
652:
648:
642:
627:
623:
617:
602:
598:
592:
584:
577:
576:
568:
554:
550:
544:
530:
526:
520:
512:
510:0-596-00214-9
506:
502:
498:
494:
490:
484:
476:
474:0-13-110163-3
470:
466:
462:
461:
456:
452:
446:
440:
434:
430:
416:
410:
403:
397:
393:
385:
382:
378:
374:
370:
366:
362:
358:
353:
351:
347:
343:
339:
335:
331:
327:
317:
315:
310:
308:
304:
300:
299:Google Search
289:
287:
283:
279:
275:
271:
267:
263:
259:
255:
251:
247:
243:
239:
235:
231:
227:
223:
219:
215:
211:
207:
203:
199:
195:
191:
187:
174:
170:
166:
162:
158:
154:
150:
146:
143:
140:
137:
134:
130:
126:
122:
119:
116:
113:
110:
106:
102:
99:
96:
95:Friendly Fire
92:
91:friendly fire
88:
85:
84:
83:
75:
73:
69:
65:
61:
57:
53:
45:
41:
37:
32:
19:
659:. Retrieved
655:the original
650:
641:
630:. Retrieved
628:. 2005-08-22
625:
616:
605:. Retrieved
600:
591:
574:
567:
556:. Retrieved
552:
543:
532:. Retrieved
528:
519:
496:
483:
458:
445:
433:
409:
396:
359:filesystems
354:
323:
313:
311:
295:
183:
172:
168:
160:
156:
152:
148:
81:
63:
59:
51:
49:
439:WP:DIFFCAPS
346:power users
238:Common Lisp
661:2013-05-20
632:2013-05-20
607:2013-05-20
558:2013-05-20
534:2019-04-27
425:References
373:Windows 95
355:The older
350:Installers
165:web server
121:File names
415:collation
402:WP:INTDAB
326:Unix-like
314:fold case
278:semantics
234:BBC BASIC
161:authority
125:Unix-like
115:Passwords
101:Usernames
87:Searching
40:uppercase
36:lowercase
676:Category
157:fragment
38:"a" and
603:. MySQL
266:Haskell
242:Fortran
228:, most
206:Verilog
507:
471:
404:error.
357:MS-DOS
303:Oracle
272:, and
270:Prolog
262:ooRexx
254:Pascal
230:BASICs
214:Python
169:scheme
167:. The
159:, and
147:: The
68:e-book
579:(PDF)
388:Notes
365:FAT16
361:FAT12
330:MacOS
218:Swift
184:Some
153:query
105:fraud
505:ISBN
469:ISBN
437:See
381:NTFS
369:VFAT
363:and
338:APFS
336:and
334:HFS+
307:DBMS
260:and
258:Rexx
222:ABAP
216:and
210:Ruby
198:Java
173:host
171:and
149:path
145:URLs
34:The
371:in
286:Nim
282:PHP
246:SQL
236:),
226:Ada
194:C++
678::
649:.
624:.
599:.
581:.
551:.
527:.
503:.
495:.
467:.
465:33
453:;
274:Go
268:,
256:,
244:,
240:,
224:,
212:,
208:,
204:,
202:C#
200:,
196:,
192:,
155:,
151:,
664:.
635:.
610:.
561:.
537:.
513:.
501:9
477:.
190:C
46:.
20:)
Text is available under the Creative Commons Attribution-ShareAlike License. Additional terms may apply.