| 摘要 |
<p>EXTRACT OPERATOR In one embodiment, a method includes receiving a search query requesting first search results of a first object type. The search query includes an inner query requesting second search results of a second object type. The method includes accessing an inverted index of a data store corresponding to the second object type; retrieving the second search results requested by the inner query using the inverted index of the data store corresponding to the second object type; accessing a forward index of the data store corresponding to the second object type; retrieving the first search results requested by the search query using the second search results and the forward index of the data store corresponding to the second object type. 4W) Receive search query requesting first search results of first object type, search query comprising inner query requesting second search results of second object type 420 Access inverted index of data store corresponding to second object type 430 Retrieve second search results using inverted index of data store corresponding to second object type 440 Access fonvard index of data store corresponding to second object type 450 Retrieve first search results using second search results and forward index of data store corresponding to second object type</p> |
