An operation is case insensitive when uppercase and lowercase characters are equally treated.
Questions tagged [case-insensitive]
1146 questions
3384
votes
31 answers
Case insensitive 'Contains(string)'
Is there a way to make the following return true?
string title = "ASTRINGTOTEST";
title.Contains("string");
There doesn't seem to be an overload that allows me to set the case sensitivity. Currently I UPPERCASE them both, but that's just silly (by…

Boris Callens
- 90,659
- 85
- 207
- 305
2007
votes
16 answers
How to do case insensitive search in Vim
I'd like to search for an upper case word, for example COPYRIGHT in a file. I tried performing a search like:
/copyright/i # Doesn't work
but it doesn't work. I know that in Perl, if I give the i flag into a regex it will turn the regex into a…

Haiyuan Zhang
- 40,802
- 41
- 107
- 134
769
votes
15 answers
How do I do a case-insensitive string comparison?
How can I compare strings in a case insensitive way in Python?
I would like to encapsulate comparison of a regular strings to a repository string, using simple and Pythonic code. I also would like to have ability to look up values in a dict hashed…

Kozyarchuk
- 21,049
- 14
- 40
- 46
563
votes
15 answers
How to make "case-insensitive" query in Postgresql?
Is there any way to write case-insensitive queries in PostgreSQL, E.g. I want that following 3 queries return same result.
SELECT id FROM groups where name='administrator'
SELECT id FROM groups where name='ADMINISTRATOR'
SELECT id FROM groups…

Jame
- 21,150
- 37
- 80
- 107
534
votes
10 answers
Case insensitive regular expression without re.compile?
In Python, I can compile a regular expression to be case-insensitive using re.compile:
>>> s = 'TeSt'
>>> casesensitive = re.compile('test')
>>> ignorecase = re.compile('test', re.IGNORECASE)
>>>
>>> print casesensitive.match(s)
None
>>> print…

Mat
- 82,161
- 34
- 89
- 109
498
votes
14 answers
Contains case insensitive
I have the following:
if (referrer.indexOf("Ral") == -1) { ... }
What I like to do is to make Ral case insensitive, so that it can be RAl, rAl, etc. and still match.
Is there a way to say that Ral has to be case-insensitive?

Nate Pet
- 44,246
- 124
- 269
- 414
420
votes
16 answers
How can I search (case-insensitive) in a column using LIKE wildcard?
I looked around some and didn't find what I was after so here goes.
SELECT * FROM trees WHERE trees.`title` LIKE '%elm%'
This works fine, but not if the tree is named Elm or ELM etc...
How do I make SQL case insensitive for this wild-card…

David Morrow
- 8,965
- 4
- 29
- 24
394
votes
27 answers
MongoDB: Is it possible to make a case-insensitive query?
Example:
> db.stuff.save({"foo":"bar"});
> db.stuff.find({"foo":"bar"}).count();
1
> db.stuff.find({"foo":"BAR"}).count();
0

Luke Dennis
- 14,212
- 17
- 56
- 69
361
votes
8 answers
How to set Sqlite3 to be case insensitive when string comparing?
I want to select records from sqlite3 database by string matching. But if I use '=' in the where clause, I found that sqlite3 is case sensitive. Can anyone tell me how to use string comparing case-insensitive?

quantity
- 4,051
- 3
- 23
- 20
351
votes
5 answers
How do you do a case insensitive search using a pattern modifier using less?
It seems like the only way to do this is to pass the -i parameter in when you initially run less. Does anyone know of some secret hack to make something like this work
/something to search for/i

mk.
- 26,076
- 13
- 38
- 41
323
votes
15 answers
How to perform case-insensitive sorting array of string in JavaScript?
I have an array of strings I need to sort in JavaScript, but in a case-insensitive way. How to perform this?

Jérôme Verstrynge
- 57,710
- 92
- 283
- 453
300
votes
1 answer
How to query Case-insensitive data in Django ORM?
How can I query/filter in Django and ignore the cases of my query-string?
I've got something like and like to ignore the case of my_parameter:
MyClass.objects.filter(name=my_parameter)

Ron
- 22,128
- 31
- 108
- 206
291
votes
12 answers
Case-insensitive search
I'm trying to get a case-insensitive search with two strings in JavaScript working.
Normally it would be like this:
var string="Stackoverflow is the BEST";
var result= string.search(/best/i);
alert(result);
The /i flag would be for…

Chris Boesing
- 5,239
- 3
- 26
- 30
264
votes
7 answers
Case insensitive searching in Oracle
The default behaviour of LIKE and the other comparison operators, = etc is case-sensitive.
Is it possible make them case-insensitive?

sergionni
- 13,290
- 42
- 132
- 189
264
votes
9 answers
How can I do a case insensitive string comparison?
How can I make the line below case insensitive?
drUser["Enrolled"] =
(enrolledUsers.FindIndex(x => x.Username == (string)drUser["Username"]) != -1);
I was given some advice earlier today that suggested I use:…

Jamie
- 2,657
- 2
- 16
- 3