blob: 75a89ee7618f39a849746be4dce8321db9cd44b9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
|
// Simple covered index query test with sort on _id
// Include helpers for analyzing explain output.
load("jstests/libs/analyze_plan.js");
var coll = db.getCollection("covered_sort_2");
coll.drop();
for (i=0;i<10;i++) {
coll.insert({_id:i});
}
coll.insert({_id:"1"});
coll.insert({_id:{bar:1}});
coll.insert({_id:null});
// Test no query
var plan = coll.find({}, {_id:1}).sort({_id:-1}).hint({_id:1}).explain("executionStats");
assert(isIndexOnly(plan.queryPlanner.winningPlan),
"sort.2.1 - indexOnly should be true on covered query");
assert.eq(0, plan.executionStats.totalDocsExamined,
"sort.2.1 - docs examined should be 0 for covered query");
print ('all tests pass');
|