Question

I want to display two columns of different types or two column data of same type that will be displayed in one column.

The types are date + time, or varchar + varchar etc

I know how to concat strings (add a string to one column) but can’t seem to do it for two columns data.

Say I want to display two columns both varchar type, fname + lname = Ajay Punja

Or

Lname + DOB = Punja 01/01/2001

I tried using single and double pipes, plus signs etc but always returns 0.

Is it because I need to convert two different data types into one matching data type? But, both varchar types returns 0.

Answer 1

I think it will help you.

SELECT CONCAT(2, ' test') as result form table_name;

It is also possible to convert a number to a string explicitly using the CAST() function. Conversion occurs implicitly with the CONCAT() function because it expects string arguments. e.g.

SELECT 38.8, CAST(38.8 AS CHAR);