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log4j:WARN No appenders could be found for logger问题

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2023-08-21

返回日期或时间戳的星期几。 此函数是 extract(DAYOFWEEK FROM expr) 的同义函数。

语法 

参数 

返回 

示例 

> SELECT dayofweek('2009-07-30');
 5

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