This tutorial also shows how to use scalar functions to calculate and extract date information, such as day of week and month name, from date columns.
本教程还展示如何使用标量函数从date列计算和提取信息,例如星期几和月份。
Date class whose member variables are: year, month, day, member functions are: output date function, set the date function, and interpretation of leap year and leap year date plus 1 function function.
详细说明:Date类,其成员变量有:年、月、日,成员函数有:输出日期函数、设置日期函数、判读平年与润年函数和日期加1函数。
Date class whose member variables are: year, month, day, member functions are: output date function, set the date function, and interpretation of leap year and leap year date plus 1 function function.
详细说明:Date类,其成员变量有:年、月、日,成员函数有:输出日期函数、设置日期函数、判读平年与润年函数和日期加1函数。
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