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Advanced
Boolean Search Commands |
| + |
A leading plus sign indicates that this word must be present in every
row returned |
| - |
A leading minus sign indicates that this word must not be present in any
row returned |
| < > |
These two operators are used to change a word's contribution to the relevance
value that is assigned to a row. The < operator decreases the contribution
and the > operator increases it. |
| ( ) |
Parentheses are used to group words into subexpressions |
| ~ |
A leading tilde acts as a negation operator, causing the word's contribution
to the row relevance to be negative. It's useful for marking noise words.
A row that contains such a word will be rated lower than others, but will
not be excluded altogether, as it would be with the - operator |
| * |
An asterisk is the truncation operator. Unlike the other operators, it
should be appended to the word, not prepended |
| " |
The phrase, that is enclosed in double quotes ", matches only rows
that contain this phrase literally, as it was typed |
