Filter intermediate results.
A WhereClause is part of FLWOR and FLWU expressions and
contains an expression. The where clause acts as a filter for the
tuples previously generated by any for and let
clauses. For each of these tuples the expression is evaluated. If the resulting
effective boolean
value is true, the tuple is retained and used in the
return clause, otherwise the tuple is discarded.
See FLWORExpr for examples.
The following construct(s) refer to this construct:
This construct is also related to the following construct(s):
ForClause
|
LetClause
|