perf-tuning: Add document for column prune (#3190)#3758
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@lawyerphx please accept the invitation then you can push to the cherry-pick pull requests. |
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cherry-pick #3190 to release-2.1
What is changed, added or deleted? (Required)
添加了关于列裁剪的中文文档
Which TiDB version(s) do your changes apply to? (Required)
What is the related PR or file link(s)?