In the database this was defined as a date field, so we had to validate and convert a month-year field to a day-month-year field.

在数据库中，它被定义为日期字段，所以我们必须进行确认并将一个月-年字段转换为一个日-月-年字段。

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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。

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The date format is Year, Month, Day, Hour, Minutes, and seconds — although the use of the seconds field is perhaps a bit much.

日期格式是年、月、日、小时、分钟和秒——但是秒字段的使用可能有点多余。

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