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达梦 数据库 以逗号分割的列如何按逗号拆分 实现列转行

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达梦 数据库 以逗号分割的列如何按逗号拆分 实现列转行

C1,C2,C3,C4

就像这样以逗号分割的列，如何按逗号进行拆分，转为和原行ID对应的多行。


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