如果日期在将来，MySQL选择额外的列

Question

I need to check whether my date field is in the future using MySQL and if so, add an extra column. It's important that I do not want to make this part of my where clause as I want to return rows where the date field is not in the future.

For example:

select 
    dateIsInFuture = 'true' if date > now()

I know the above is not valid syntax but I need to know how to write that in a valid SQL statement.

Thanks

Answer 1

select *, case when date_col > now() 
               then 'true'
               else 'false'
          end as dateIsInFututre
from your_table

Answer 2

您可以使用if ，但是使用以下语法：

SELECT IF(date > now(), 'true', 'false') as FutureFlag FROM YOUR_TABLE