I have this query
Select Id, Email, ContactId, Username from User where Username Like '\_%'
works perfectly with Devloper console and give me users whose username starts with _
I am using this code in apex, but there its not giving the desired result.
From salesforce docs
The LIKE operator in SOQL and SOSL supports escaping of special characters % or _. Don’t use the backslash character in a search except to escape a special character.
PS : I have tried escaping double backslash
\\_ , four backslash
[_] . None worked. and not escaping also.