Postgresql judge a column in the number of continuous phase equivalent-CodePudding

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Postgresql judge a column in the number of continuous phase equivalent

Time：09-30

Be out in a certain sort of yn continuous phase under the equivalent number of SQL or stored procedures to achieve

CodePudding user response:

The output is not very clear, if you stick figure, you finally get what specific content? (don't understand why didn't count 2 1, 8 behind when didn't count 1 0)

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