MySql, combining date and time column into a time stamp

Question

I am guessing this is relatively simple to do, but I am unsure of the syntax. I have date and time columns that I want to combine to a timestamp column. how would I query th

Answer 1

Mysql does not seem to have a constructor for datetime such as datetime('2017-10-26', '09:28:00'). So you will have to treat the component part as string and use string concatenation function (Note mysql does not have the || operator for string concatenation). If you want the datetime type, you will have to cast it.

concat(datefield,' ',timefield) as date

select cast(concat('2017-10-26', ' ', '09:28:00') as datetime) as dt;