How is the time of comprocessor calculated?

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Original topic: comprocessor的时间是怎么统计

| username: gejibin

Why is the execution time of this SQL so long, with the coprocessor time being 488.8ms?
How is the coprocessor time calculated?

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| username: 人如其名 | Original post link

Could you please post the complete execution plan for us to take a look?