90 lines
3.5 KiB
JavaScript
90 lines
3.5 KiB
JavaScript
// Simple covered index query test with a unique sparse index
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// Include helpers for analyzing explain output.
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load("jstests/libs/analyze_plan.js");
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var coll = db.getCollection("covered_simple_3");
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coll.drop();
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for (i = 0; i < 10; i++) {
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coll.insert({foo: i});
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}
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for (i = 0; i < 5; i++) {
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coll.insert({bar: i});
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}
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coll.insert({foo: "string"});
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coll.insert({foo: {bar: 1}});
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coll.insert({foo: null});
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coll.ensureIndex({foo: 1}, {sparse: true, unique: true});
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// Test equality with int value
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var plan = coll.find({foo: 1}, {foo: 1, _id: 0}).hint({foo: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.1 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.1 - docs examined should be 0 for covered query");
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// Test equality with string value
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var plan = coll.find({foo: "string"}, {foo: 1, _id: 0}).hint({foo: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.2 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.2 - docs examined should be 0 for covered query");
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// Test equality with int value on a dotted field
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var plan = coll.find({foo: {bar: 1}}, {foo: 1, _id: 0}).hint({foo: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.3 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.3 - docs examined should be 0 for covered query");
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// Test no query
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var plan = coll.find({}, {foo: 1, _id: 0}).hint({foo: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.4 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.4 - docs examined should be 0 for covered query");
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// Test range query
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var plan =
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coll.find({foo: {$gt: 2, $lt: 6}}, {foo: 1, _id: 0}).hint({foo: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.5 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.5 - docs examined should be 0 for covered query");
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// Test in query
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var plan =
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coll.find({foo: {$in: [5, 8]}}, {foo: 1, _id: 0}).hint({foo: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.6 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.6 - docs examined should be 0 for covered query");
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// Test $exists true
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var plan =
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coll.find({foo: {$exists: true}}, {foo: 1, _id: 0}).hint({foo: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.7 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.7 - docs examined should be 0 for covered query");
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// Check that $nin can be covered.
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coll.dropIndexes();
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coll.ensureIndex({bar: 1});
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var plan =
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coll.find({bar: {$nin: [5, 8]}}, {bar: 1, _id: 0}).hint({bar: 1}).explain("executionStats");
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assert(isIndexOnly(plan.queryPlanner.winningPlan),
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"simple.3.8 - indexOnly should be true on covered query");
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assert.eq(0,
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plan.executionStats.totalDocsExamined,
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"simple.3.8 - docs examined should be 0 for covered query");
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print('all tests pass');
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