Scheduling of query pipeline execution

A computer-implemented method comprising:

• receiving a query execution plan associated with a plurality of query execution pipelines, estimated execution costs and estimated intermediate result cardinalities;
• determining one or more precedence relationships of the plurality of query execution pipelines;
• determining an execution order of the plurality of query execution pipelines based on the estimated execution costs, the estimated intermediate result cardinalities, and the one or more precedence relationships;
• and
• providing the execution order of the plurality of query execution pipelines and the query execution plan to a query execution engine.

A non-transitory medium storing processor-executable program code, the program code executable by a computing system to cause the computing system to:

• receive a query execution plan associated with a plurality of query execution pipelines, estimated execution costs and estimated intermediate result cardinalities;
• determine one or more precedence relationships of the plurality of query execution pipelines;
• determine an execution order of the plurality of query execution pipelines based on the estimated execution costs, the estimated intermediate result cardinalities, and the one or more precedence relationships;
• and
• provide the execution order of the plurality of query execution pipelines and the query execution plan to a query execution engine.