SQL 如何将 select 中的时间戳转换为日期时间？

Question

I have table where there are columns username, visit and timestamp. I select user by name and visit. But the result of query must contain: username, visit, datetime.

How do I go from here:

select username, visit, timestamp
from Table
where username like "Jane" and visit like "cafe"

to the result with date?

Thanks a lot

Answer 1

You can convert the timestamp to a date using the DATE() function in SQL. The following query should give you the desired result:

select username, visit, DATE(timestamp) as datetime
from Table
where username like "Jane" and visit like "cafe"

This query selects the username, visit, and timestamp columns from the Table, and also includes an additional column, "datetime", which is the result of applying the DATE() function to the timestamp column. This function extracts the date part of the timestamp and formats it as a date.

If you want to format the datetime in a specific format you could use DATE_FORMAT() function like this:

select username, visit, DATE_FORMAT(timestamp, '%Y-%m-%d') as datetime
from Table
where username like "Jane" and visit like "cafe"

This will format the datetime to YYYY-MM-DD format.