Case insensitive search in Mongo

Question

I am using a case insensitive search in Mongo, something similar to https://stackoverflow.com/q/5500823/1028488.

ie I am using a regex with options i. But I am am ha

Answer 1

You can Use $options => i for case insensitive search. Giving some possible examples required for string match.

Exact case insensitive string

db.collection.find({name:{'$regex' : '^string$', '$options' : 'i'}})

Contains string

db.collection.find({name:{'$regex' : 'string', '$options' : 'i'}})

Start with string

db.collection.find({name:{'$regex' : '^string', '$options' : 'i'}})

End with string

db.collection.find({name:{'$regex' : 'string$', '$options' : 'i'}})

Doesn't Contains string

db.collection.find({name:{'$regex' : '^((?!string).)*$', '$options' : 'i'}})

Keep this as a bookmark, and a reference for any other alterations you may need. http://www.cheatography.com/davechild/cheat-sheets/regular-expressions/