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/**
* Test wildcard index support when the query contains duplicate predicates.
* @tags: [
* assumes_read_concern_local,
* ]
*/
(function() {
"use strict";
load("jstests/libs/analyze_plan.js"); // For getPlanStages.
const coll = db.wildcard_index_dup_predicates;
coll.drop();
const indexWildcard = {
"$**": 1
};
// Inserts the given document and runs the given query to confirm that:
// (1) query matches the given document
// (2) the winning plan does a wildcard index scan
function assertExpectedDocAnswersWildcardIndexQuery(doc, query, match) {
coll.drop();
assert.commandWorked(coll.createIndex(indexWildcard));
assert.commandWorked(coll.insert(doc));
// Check that a wildcard index scan is being used to answer query.
const explain = coll.explain("executionStats").find(query).finish();
if (!match) {
assert.eq(0, explain.executionStats.nReturned, explain);
return;
}
// Check that the query returns the document.
assert.eq(1, explain.executionStats.nReturned, explain);
// Winning plan uses a wildcard index scan.
const winningPlan = getWinningPlan(explain.queryPlanner);
const ixScans = getPlanStages(winningPlan, "IXSCAN");
assert.gt(ixScans.length, 0, explain);
ixScans.forEach((ixScan) => assert.eq(ixScan.indexName, "$**_1"));
}
assertExpectedDocAnswersWildcardIndexQuery(
{a: {b: "foo"}},
{$and: [{a: {$type: 'object'}}, {a: {$type: 'object'}}, {"a.b": "foo"}]},
true);
assertExpectedDocAnswersWildcardIndexQuery({a: {b: "foo"}},
{
$and: [
{$expr: {$gt: ["$a", {$literal: {}}]}},
{$expr: {$gt: ["$a", {$literal: {}}]}},
{"a.b": "foo"}
]
},
true);
assertExpectedDocAnswersWildcardIndexQuery(
{a: {b: "foo"}}, {$and: [{a: {$gt: {}}}, {a: {$gt: {}}}, {"a.b": "foo"}]}, true);
assertExpectedDocAnswersWildcardIndexQuery(
{a: {b: "foo"}}, {$and: [{a: {$ne: 3}}, {a: {$ne: 3}}, {"a.b": "foo"}]}, true);
assertExpectedDocAnswersWildcardIndexQuery(
{a: {b: "foo"}},
{$and: [{a: {$nin: [3, 4, 5]}}, {a: {$nin: [3, 4, 5]}}, {"a.b": "foo"}]},
true);
assertExpectedDocAnswersWildcardIndexQuery(
{a: {b: "foo"}}, {$and: [{a: {$exists: true}}, {a: {$exists: true}}, {"a.b": "foo"}]}, true);
assertExpectedDocAnswersWildcardIndexQuery(
{a: {b: "foo"}},
{$and: [{a: {$elemMatch: {$gt: {}}}}, {a: {$elemMatch: {$gt: {}}}}, {"a.b": "foo"}]},
false);
})();
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