DATA DISTRIBUTION METHOD, DEVICE, AND SYSTEM

摘要

The present invention relates to the technical field of information. Disclosed are a data distribution method, device, and system, so as to save querying time, and improve the querying efficiency. The method comprises: before data querying, a control node setting a distribution table establishment instruction according to an establishment rule, the distribution table establishment instruction carrying an identifier (ID) of a logic data table and a distribution column ID of a selected distribution column, the selected distribution column being a distribution column in the logic data table, and the logic data table being a logic data table established in the control node; and the control node sending the distribution table establishment instruction to a data node, so that the data node establishes a distribution table of the logic data table according to the distribution table establishment instruction. The present invention is mainly applied in a data distribution process in a parallel database system.