Structured Query Language Basics:

The text search engine allows queries to be formed from arbitrary Boolean expressions containing the keywords AND, OR, and NOT, and grouped with parentheses, as well as the 'wildcard' *. For example:

words numbers
finds documents containing 'words' or 'numbers'

words or numbers
same as above

words and numbers
finds documents containing both 'words' and 'numbers'

words not numbers
finds documents containing 'words' but not 'numbers'

(words not numbers) and other stuff
finds documents containing 'other stuff', plus 'words' but not 'numbers'

web*
finds documents containing words starting with 'web'

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