I have been updating my MySQL tables with the following:
ALTER TABLE logs ADD COLUMN updateTimeStamp timestamp DEFAULT current_timestamp() ON UPDATE current_timestamp;
This stores the timestamp in the format of
2021-12-29 15:21:34
I tried originally to do the alter like so:
ALTER TABLE logs ADD COLUMN updateTimeStamp timestamp DEFAULT unix_timestamp() ON UPDATE unix_timestamp();
so that could store like 12121232, however that results in an error.
Is there anyway I can achieve the default and on update and store the timestamp in the format of 1212112, instead of the human readable datetime?
I know I can do SELECT unix_timestamt(columnname)
, but ideally I don't want to do that.
CodePudding user response:
If you want to automatically get an integer when you select the column, you need to make it an int
(or int unsigned
) type. You can set its default with default (unix_timestamp())
(the extra parentheses are needed when not using one of the historically allowed default values). And you will need to add a trigger to set it on update.
But I suggest you not do that; just use a timestamp type. You just make future trouble for yourself by not using the type designed to store timestamps.