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What is case-insensitive searching?
This means that a search for a term matches other occurrences of that term, regardless of their case in the original document, and regardless of the case in which the search term is written. For example, a search for Dog matches documents that originally contained terms such as dog, DOG, Dog, or DoG.
How do I do a case-insensitive search in Mongodb?
To use a case insensitive index on a collection with no default collation, create an index with a collation and set the strength parameter to 1 or 2 (see Collation for a detailed description of the strength parameter). You must specify the same collation at the query level in order to use the index-level collation.
How do you do a case insensitive search in Unix?
Case Insensitive Search To ignore case when searching, invoke grep with the -i option (or –ignore-case ). Specifying “Zebra” will match “zebra”, “ZEbrA” or any other combination of upper and lower case letters for that string.
How do you do a case insensitive search in SQL?
Case insensitive SQL SELECT: Use upper or lower functions select * from users where lower(first_name) = ‘fred’; As you can see, the pattern is to make the field you’re searching into uppercase or lowercase, and then make your search string also be uppercase or lowercase to match the SQL function you’ve used.
Is MongoDB search case insensitive?
Mongo (current version 2.0. 0) doesn’t allow case-insensitive searches against indexed fields – see their documentation. For non-indexed fields, the regexes listed in the other answers should be fine.
Is MongoDB query case insensitive?
A collation defines the language-specific rules that MongoDB will use for string comparison. Therefore, when you set the default collation to a strength of 1 or 2 , you’ll get case-insensitive queries and indexes by default. See the collation option in the db.
Is SQL SELECT CASE sensitive?
The SQL Keywords are case-insensitive (SELECT, FROM, WHERE, etc), but are often written in all caps. However in some setups table and column names are case-sensitive. MySQL has a configuration option to enable/disable it.
Is PostgreSQL case sensitive?
PostgreSQL is case-sensitive . One of the most annoying things for people coming from a Windows environment is that PostgreSQL is case-sensitive whereas MS Access in-general is not (except when querying case sensitive databases). Explaining this to users and training them on case sensitivity is just a lot of hassle, not to mention the time-loss
Is SQL syntax case sensitive?
No, by default, SQL is not case sensitive. Whenever you see capitalised letters in SQL queries it’s because of a naming convention. Your query would run just the same even if you write your SQL keywords in all caps or not.
What is case sensitive in SQL?
Case sensitive search in SQL Server. Yes, a SQL Server database can be case sensitive. Case sensitive here means that SQL Server will return different result set for CASE, Case, CaSe etc. and it will treat the mentioned strings as 3 different strings. A case sensitive database has a case sensitive collation.