How to concat datatypes like integers(integer with integer) & varchar(varchar with varchar) in mysql?

Question

How can we concat

1. integers with integers
2. varchar with varchar
3. int with varchar

in MySQL ?

Answer 1

if the arguments include any binary strings, the result is a binary string. A numeric argument is converted to its equivalent binary string form; if you want to avoid that, you can use an explicit type cast, as in this example:

SELECT CONCAT(CAST(int_col AS CHAR), char_col);

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