diff options
Diffstat (limited to 'src/mongo/db/query/query_solution.cpp')
| -rw-r--r-- | src/mongo/db/query/query_solution.cpp | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/src/mongo/db/query/query_solution.cpp b/src/mongo/db/query/query_solution.cpp index 567cb958e0a..6ba95a37232 100644 --- a/src/mongo/db/query/query_solution.cpp +++ b/src/mongo/db/query/query_solution.cpp @@ -38,12 +38,15 @@ #include "mongo/db/query/collation/collation_index_key.h" #include "mongo/db/query/index_bounds_builder.h" #include "mongo/db/query/planner_analysis.h" +#include "mongo/db/query/planner_wildcard_helpers.h" #include "mongo/db/query/query_planner_common.h" namespace mongo { namespace { +namespace wcp = ::mongo::wildcard_planning; + // Create an ordred interval list which represents the bounds for all BSON elements of type String, // Object, or Array. OrderedIntervalList buildStringBoundsOil(const std::string& keyName) { @@ -536,6 +539,12 @@ void IndexScanNode::appendToString(mongoutils::str::stream* ss, int indent) cons } bool IndexScanNode::hasField(const string& field) const { + // A $** index whose bounds overlap the object type bracket cannot provide covering, since the + // index only contains the leaf nodes along each of the object's subpaths. + if (index.type == IndexType::INDEX_WILDCARD && wcp::isWildcardObjectSubpathScan(this)) { + return false; + } + // The index is multikey but does not have any path-level multikeyness information. Such indexes // can never provide covering. if (index.multikey && index.multikeyPaths.empty()) { |