1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
|
t = db.stages_and_hashed;
t.drop();
var collname = "stages_and_hashed";
var N = 50;
for (var i = 0; i < N; ++i) {
t.insert({foo: i, bar: N - i, baz: i});
}
t.ensureIndex({foo: 1});
t.ensureIndex({bar: 1});
t.ensureIndex({baz: 1});
// Scan foo <= 20
ixscan1 = {ixscan: {args:{name: "stages_and_hashed", keyPattern:{foo: 1},
startKey: {"": 20}, endKey: {},
endKeyInclusive: true, direction: -1}}};
// Scan bar >= 40
ixscan2 = {ixscan: {args:{name: "stages_and_hashed", keyPattern:{bar: 1},
startKey: {"": 40}, endKey: {},
endKeyInclusive: true, direction: 1}}};
// bar = 50 - foo
// Intersection is (foo=0 bar=50, foo=1 bar=49, ..., foo=10 bar=40)
andix1ix2 = {andHash: {args: { nodes: [ixscan1, ixscan2]}}};
res = db.runCommand({stageDebug: {plan: andix1ix2, collection: collname}});
assert.eq(res.ok, 1);
assert.eq(res.results.length, 11);
// Filter predicates from 2 indices. Tests that we union the idx info.
andix1ix2filter = {fetch: {filter: {bar: {$in: [45, 46, 48]}, foo: {$in: [4,5,6]}},
args: {node: {andHash: {args: {nodes: [ixscan1, ixscan2]}}}}}};
res = db.runCommand({stageDebug: {collection: collname, plan: andix1ix2filter}});
assert.eq(res.ok, 1);
assert.eq(res.results.length, 2);
|