What is the asterisk wild card used for?

The asterisk wildcard () is used in various computing and programming contexts to represent one or more characters in a search or query. It allows for flexible matching in file searches, database queries, and search engines, enabling users to find results that contain varying characters or strings. For example, in file systems, ".txt" would match all text files, while in SQL, "SELECT * FROM table" retrieves all columns from a specified table.