Which type of relationship links sub-queries by default?

OR is a less restrictive operator that returns rows satisfying any one condition; it is not the default and must be explicitly set by the user.

Web Intelligence mirrors standard SQL behavior by combining multiple sub-query predicates with AND by default, requiring all sub-query conditions to be satisfied simultaneously for a row to qualify. This default ensures the most restrictive and precise filtering behavior when sub-queries are stacked. Users can manually change the operator to OR if broader matching is needed.

NOR is not a valid or supported sub-query linking operator within the Web Intelligence Query panel.

NAND is not a valid or supported sub-query linking operator within the Web Intelligence Query panel.