Question

I have the following 6 integer db columns:

• Year
• Day
• Month
• Hour
• Minute
• Second

I need a query that takes these values for every row, combines them into a DATETIME and puts into another column.

Answer 1

It might not be the most efficient but you could do this:

UPDATE my_table
SET my_date = CONCAT(my_year, '-', my_month, '-', my_day, ' ',
    my_hour, ':', my_mins, ':', my_seconds)
WHERE ...