For example, in Google BigQuery, you can specify DAYOFWEEK to find out the day of the week. This is not available in Oracle or MySQL. Please note that component_part needs to align with the data type of expression. For example, if you try to extract the hour from a DATE expression,...
Extract can only get single fields. To extract the full date (year, month, day) or time (hour, minute, second) from a timestamp, cast can be used:1 CAST( AS [DATE|TIME]) This is particularly useful for the group by clause. In the where clause, it is often the wrong choice....
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如何使用BigQuery按月分组 、 我正在尝试使用TIMESTAMP列/字段来统计每月(数年)的公交出行次数(包括起点和目的地)。我可以按月(TIMESTAMP_TRUNC(start_date, MONTH))来做这件事,但我想按月做。任何帮助都是非常感谢的。谢谢 浏览3提问于2020-09-14得票数 3 回答已采纳 ...