Wildcard characters are special characters that are interpreted when comparing text.

There are three meaningful wildcard characters:

? - matches a single character * - matches everything (including nothing) & - matches a whole word if used alone

For example the expression "t*s a *?t" matches the string "this is a text"

If & is not used alone it matches the plain text '&' character

"test &" matches "test this" or "test that"

"test &his" matches only "test &his"

"test thi&" matches only "test thi&"

"test th&s" matches only "test th&s"