RANK can search in text documents and return a rank value for each document found, indicating how well the found document is described by the search argument.
RANK returns an DOUBLE value between 0 and 1. The rank value is absolute, indicating how well the found document satisfies the search criteria in relation to other found documents. The value indicates the number of matches found in the document in relation to the document's size.
Function syntax
>>-RANK---(--handle--,--search-argument----)-------------------><
Function parameters