The invention provides a database query method and equipment and a medium. The method comprises the steps of obtaining a data query statement input by a user; analyzing the data query statement into aplurality of operators through utilization of a syntactic analyzer; evaluating execution time and precision of each operator; configuring execution a computing resource and a computing parameter of each operator through combination of valid computing resources according to the execution time and precision of each operator; and querying corresponding data according to the execution computing resource and computing parameter of each operator. Through application of the method, resources can be saved, and a query result can be obtained in limited time.