Excuse me how oracle in accordance with the contents of the specified column to match the content of-CodePudding

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Excuse me how oracle in accordance with the contents of the specified column to match the content of

Time：09-21

Such as colume1 column2
A, B
B C
C D
D NULL peers show could you tell me how to achieve the same content

CodePudding user response:

What you would like to achieve results? Describe the EXCEL way

CodePudding user response:

Full join?

CodePudding user response:

The same table should not work,,,