Searching Rlin: Boolean Operators

Boolean or "Logical" Operators

More complex searches utilizing 2 or more search terms can be implemented through the use of Boolean Operators. The ones available are:

Operator	Alternative Symbol
and	&
or	|
not	~

Usage

• The Boolean Operators can be used in the following Search Statement Format:
  • FIND <index> <value> <operator> <index> <value>
    • Note: The <operator> is: and (&), or (|), or not (~)
  • Examples:
    • fin pn clive barker and tw horror

      fin tw species & pn darwin

• Note: "and" can be used to add information to modify a search after the initial FIND search in the format:
  • <operator> <index> <value>
  • Example:
    • Initial search: find pn ernest hemingway

      modification: and tw old man

      modification: or pn johnny rotten

Handling phrases containing logical operators

• Use double quotes - " " - around phrases that contain logical operators or symbols.
• Example:
  • ft tp "war and peace"

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