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// Test query stage sorting.
if (false) {
t = db.stages_sort;
t.drop();
var N = 50;
for (var i = 0; i < N; ++i) {
t.insert({foo: i, bar: N - i});
}
t.ensureIndex({foo: 1});
// Foo <= 20, descending.
ixscan1 = {
ixscan: {
args: {
name: "stages_sort",
keyPattern: {foo: 1},
startKey: {"": 20},
endKey: {},
endKeyInclusive: true,
direction: -1
}
}
};
// Sort with foo ascending.
sort1 = {
sort: {args: {node: ixscan1, pattern: {foo: 1}}}
};
res = db.runCommand({stageDebug: sort1});
assert.eq(res.ok, 1);
assert.eq(res.results.length, 21);
assert.eq(res.results[0].foo, 0);
assert.eq(res.results[20].foo, 20);
// Sort with a limit.
// sort2 = {sort: {args: {node: ixscan1, pattern: {foo: 1}, limit: 2}}};
// res = db.runCommand({stageDebug: sort2});
// assert.eq(res.ok, 1);
// assert.eq(res.results.length, 2);
// assert.eq(res.results[0].foo, 0);
// assert.eq(res.results[1].foo, 1);
}
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