Precedence Rules
Because search queries can include different types of operators in a variety of combinations, PsycCrawler uses precedence
rules to govern the order in which a query's operations are processed.
When processing queries, PsycCrawler evaluates operators in the following order-all operators of equal precedence are
evaluated from left to right:
- All operators not specified below, in order from left to right.
- Proximity operators-W/n, ADJ and its surrogates (hyphen, apostrophe, comma, period), NEAR/n-from left to
right.
- The Boolean NOT operator.
- The Boolean AND operator.
- The Boolean OR operator.
- The query-level field restriction operator (/f:).
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