An identifier that is enclosed in identifier quote characters so that it can contain special characters or match keywords (also known as a quoted identifier).
A sequence of characters enclosed within quotation marks ("). The sequence must consist of a letter followed by zero or more characters, each of which is a letter, a digit, or the underscore character.
an identifier delimited by double quotes
an identifier in double quotes
an identifier name that contains characters that do not conform to identifier-naming rules
a sequence of one or more characters enclosed within SQL escape characters
a string of characters within SQL escape characters
A sequence of characters enclosed within double quotation marks (").