The text search engine allows queries to be formed from arbitrary Boolean expressions containing the keywords AND, OR, and NOT, and grouped with parentheses. For example:
aquarium fish finds documents containing 'aquarium' or 'fish' aquarium or fish
same as above aquarium and fish
finds documents containing both 'aquarium' and 'fish' aquarium not fish
finds documents containing 'aquarium' but not 'fish' (aquarium not fish) and discus
finds documents containing 'discus', plus 'aquarium' but not 'fish' cichli*
finds documents containing words starting with 'cichli', e.g. 'cichlids', 'cichlidae', etc. |