The functions under this category allow creating and working with subqueries, which are separate single FlexQuery statements or a statement blocks.
The subqueries are used as parameters passed to some specific FlexQuery
functions (for instance, iterate()
or filterElements()
).
Such functions normally process a number of data items. That processing includes iterating by those items and executing the passed subquery for each of them. The subquery may do some operations related to the item or check something about it so as the function uses the result value returned by the subquery for further processing of the item.
See FlexQuery()
function description for further details.