Column names should be kept in double quotes.

In SQL, identifiers such as table names, column names, and aliases can be quoted to preserve case sensitivity, allow spaces, or use reserved words. Double quotes ("identifier") are the standard ANSI SQL quoting mechanism. For example, "User" is a valid column name even though USER is a reserved keyword. Quoted identifiers are case-sensitive in many databases (e.g., PostgreSQL), so "User" and "user" are distinct. Unquoted identifiers are usually folded to upper case (in Oracle) or lower case (in MySQL) and cannot contain spaces or special characters. Therefore, when you need to use a name that conflicts with a keyword or contains special characters, wrap it in double quotes.