MySql get full name from last first mid name

Using CONCAT_WS to extract full name from first , middle and last name. 

It also handles the case that the mid_name can be empty or null or even have multiple spaces!


SELECT id, email,
    CASE WHEN mid_name IS NULL OR TRIM(mid_name) ='' THEN
        CONCAT_WS( " ", first_name, last_name )
    ELSE
        CONCAT_WS( " ", first_name, mid_name, last_name )
    END AS full_name
FROM USER;

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