Editing Wildcard character (section)

===Databases===
In [[SQL]], wildcard characters can be used in LIKE expressions; the [[percent]] sign {{code|%}} matches zero or more characters, and [[underscore]] {{code|_}} a single character. [[Transact-SQL]] also supports [[square brackets]] ({{code|[}} and {{code|]}}) to list sets and ranges of characters to match, a leading caret {{code|^}} negates the set and matches only a character not within the list. In [[Microsoft Access]], the [[asterisk]] sign {{code|*}} matches zero or more characters, the [[question mark]] {{code|?}} matches a single character, the [[number sign]] {{code|#}} matches a single digit (0–9), and square brackets can be used for sets or ranges of characters to match.