What is the structure of columnar storage? Is data stored in blocks by columns?

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This topic has been translated from a Chinese forum by GPT and might contain errors.

Original topic: 列存的结构是怎样的？是按列将数据存储到数据块吗？

| username: alfred

【TiDB Usage Environment】Production, Testing, Research
【TiDB Version】
【Encountered Problem】
【Reproduction Path】Operations performed that led to the problem
【Problem Phenomenon and Impact】

【Attachments】

Please provide the version information of each component, such as cdc/tikv, which can be obtained by executing cdc version/tikv-server --version.

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| username: yilong | Original post link

The link you provided leads to a Zhihu article. Please provide the specific text you need translated, and I will translate it for you.