NOT (~)

Use the NOT operator to search for documents that contain one query term and not another.

Syntax

Syntax	Description
term1~term2 term1 not term2	Returns documents that contain term1 and not term2.

Examples

To obtain the documents that contain the term animals but not dogs, use the following expression:

'animals ~ dogs'

Similarly, to obtain the documents that contain the term transportation but not automobiles or trains, use the following expression:

'transportation not (automobiles or trains)'

Note: The NOT operator does not affect the scoring produced by the other logical operators.