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Im trying to figure out a way to fix a database schema issue.
In column 1 a y-m-d H:i:s date is stored (timestamp field)
col1 = 2009-11-12 00:00:00
In column 2 a time is stored (varchar)
col2 = 15:48
I’m thinking that storing it in one column would be more efficient than separately, so I’m trying to make column 3 a datetime field
col3 = 2009-11-12 15:48:00
Unless keeping it original is fine.
Yes, definitely use one field, you can get just the date or time from it later if you need. I believe you can run the following query to update col3 with the correct datetimes.
If you don’t have anything accessing these old fields (col1 and col2), you should get rid of them for clarity. If you do, it is going to be tricky decided whether or not to maintain two fields for the same data.