Loading TOC...


   rightPlan as String,
   [ondef as String],
   [condition as xs.boolean]
) as ModifyPlan


This method is a filtering join that filters based on whether the join exists or not but doesn't add any columns.

It filters the left row set to the rows that have a join in the right row set.

rightPlan The row set from the right view.
ondef The equijoin from one or more calls to the op.on function.
condition A boolean expression that filters the join output rows. See Boolean Expression Functions for the list of functions used to build boolean expressions.

Usage Notes

existsJoin is a method of the following classes:

The library functions for building the existsJoin parameters are as follows:


// It filters out {'r1':1, 'k1':'a'} in p1 as value 'a' exists in column 'k2' of p2
const op = require('/MarkLogic/optic');

const p1 = op.fromLiterals([
    {'r1':1, 'k1':'a'},
    {'r1':2, 'k1':'b'}
const p2 = op.fromLiterals([
    {'r2':3, 'k2':'a'},
    {'r2':4, 'k2':'c'}
p1.existsJoin(p2, op.on('k1', 'k2')).result();

Stack Overflow iconStack Overflow: Get the most useful answers to questions from the MarkLogic community, or ask your own question.