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Query Syntax
Simple multiple term searches are assumed to be ORed. Searching for 'java sql' will return hits for documents with java OR sql.
A query is a series of clauses. A clause is a term, or
a nested query enclosed in ( ).
Clauses can be prefixed with a '+' or '-' to indicate that
a clause is required or prohibited.
Wildcard searches (with * and ?) are suppported at the middle or
end of a term, but NOT THE BEGINING. Valid: data*, Invalid: *data.
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