获取上个月的第一天可以使用DATE_TRUNC函数。该函数可以将日期截断到指定的单位,例如年、月、日等。使用DATE_TRUNC('MONTH', CURRENT_DATE) - INTERVAL '1 MONTH'可以获取上个月的第一天。 获取上个月的最后一天可以使用DATE_TRUNC函数和DATEADD函数。首先,使用DATE_TRUNC('MONTH', CURRENT_DATE) - INTERVAL...
select distinct week, month, year from date where month='DEC' and year=2008 order by 1, 2, 3; week | month | year ---+---+--- 49 | DEC | 2008 50 | DEC | 2008 51 | DEC | 2008 52 | DEC | 2008 53 | DEC | 2008 (5 rows) このページは役に立ちましたか? はい いい...
This technique, which measures the extent to which visible light coming from an object is shifted towards the red end of the spectrum, has been the standard method for determining the distance to other galaxies for over a century. For the sake of their study, the Durham team relied on data...
End-to-end encryption:You can set up Amazon Redshift to use SSL to secure data in transit, and hardware-accelerated AES-256 encryption for data at rest. If you choose to enable encryption of data at rest, all data written to disk will be encrypted as well as any backups. Amazon Redsh...
Amazon Redshift deletes automated snapshots at the end of a snapshot's retention period, when you disable automated snapshots for the cluster, or when you delete the cluster. Amazon Redshift retains the latest automated snapshot until you disable automated snapshots or delete the cluster....
文章背景： 最近在学习Power BI进行报表的制作，其中有一项内容是日期表。日期表是使用时间智能函数的基础...
This edition of Week in Review marks the end of the month of May. In addition, we just finished all of the in-person AWS Summits in Asia-Pacific and Japan starting from AWS Summit Sydney and AWS Summit Tokyo in April to AWS Summit ASEAN, AWS Summit Seoul, and...
Each compute node is given a piece of the data. The leader node is in charge of aggregating the results in the end. Users can choose between two types of nodes in Redshift: Dense Storage nodes and Dense Compute nodes. Customers can choose them based on ...
End Of Frame帧渲染结束 When Redshift has finished rendering the frame, it saves the image and prints out how much time the frame took in total. The total time includes extraction, preparation, prepasses and final rendering times. 当Redshift渲染完一帧,会保存图片并且显示这一帧总渲染的时长。总...
End Of Frame帧渲染结束 When Redshift has finished rendering the frame, it saves the image and prints out how much time the frame took in total. The total time includes extraction, preparation, prepasses and final rendering times. 当Redshift渲染完一帧,会保存图片并且显示这一帧总渲染的时长。总...