| CPC G06F 16/2456 (2019.01) [G06F 16/2433 (2019.01); G06F 16/24526 (2019.01)] | 20 Claims | 

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               1. A graph data query method for use in a graph database, the method comprising: 
            receiving and parsing a graph query statement for the graph database, wherein the graph query statement comprises a first match pattern for first graph data, a second match pattern for second graph data, a join operation keyword indicating a join type, and a matching condition; 
                determining one or more first matching objects in the first graph data based on the first match pattern, determining one or more second matching objects in the second graph data based on the second match pattern, and determining one or more target matching objects that satisfy the matching condition from the first matching objects and the second matching objects; and 
                determining one or more target query objects corresponding to the graph query statement based on the join type and the target matching objects, thereby performing a graph data query in the graph database. 
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