17 lines
561 B
JavaScript
17 lines
561 B
JavaScript
// Test that $ne constraints are accounted for in QueryPattern. SERVER-4665
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t = db.jstests_queryoptimizer6;
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t.drop();
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t.save({a: 1});
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// There is a bug in the 2.4.x indexing where the first query below returns 0 results with this
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// index, but 1 result without it.
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//
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// t.ensureIndex( {b:1}, {sparse:true} );
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// The sparse index will be used, and recorded for this query pattern.
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assert.eq(1, t.find({a: 1, b: {$ne: 1}}).itcount());
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// The query pattern should be different, and the sparse index should not be used.
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assert.eq(1, t.find({a: 1}).itcount());
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