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(function() {
"use strict";
load("jstests/libs/optimizer_utils.js"); // For checkCascadesOptimizerEnabled.
if (!checkCascadesOptimizerEnabled(db)) {
jsTestLog("Skipping test because the optimizer is not enabled");
return;
}
const t = db.cqf_index_intersect1;
t.drop();
assert.commandWorked(t.insert({a: 50}));
assert.commandWorked(t.insert({a: 70}));
assert.commandWorked(t.insert({a: 90}));
assert.commandWorked(t.insert({a: 110}));
assert.commandWorked(t.insert({a: 130}));
// Generate enough documents for index to be preferable.
for (let i = 0; i < 100; i++) {
assert.commandWorked(t.insert({a: 200 + i}));
}
assert.commandWorked(t.createIndex({'a': 1}));
let res = t.explain("executionStats").aggregate([{$match: {'a': {$gt: 60, $lt: 100}}}]);
assert.eq(2, res.executionStats.nReturned);
assert.eq("IndexScan", res.queryPlanner.winningPlan.optimizerPlan.child.leftChild.nodeType);
// Should get a covered plan.
res = t.explain("executionStats")
.aggregate([{$project: {'_id': 0, 'a': 1}}, {$match: {'a': {$gt: 60, $lt: 100}}}]);
assert.eq(2, res.executionStats.nReturned);
assert.eq("IndexScan", res.queryPlanner.winningPlan.optimizerPlan.child.child.nodeType);
}());
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