Data processing method and apparatus, electronic device, and storage medium

An electronic device, comprising:

• one or more processors;
• and
• one or more storage devices, individually or collectively, having processor-executable instructions stored thereon, the processor-executable instructions, when executed by the one or more processors, enabling the one or more processors to, individually or collectively, implement actions including:
• in a process of writing target data in a memory into a disk,
• in response to a query instruction for the target data, separately querying data from at least one piece of first local data and at least one piece of second local data based on the query instruction, intermediate index layer information of the at least one piece of first local data, and intermediate index layer information of the at least one piece of second local data,
• wherein the first local data includes a first portion of the target data stored in the disk, the second local data includes a second portion of the target data stored in the memory, the target data is in a column-stored form, and each column group of the target data corresponds to a piece of second local data.