mysql - Joining name in SQl -

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i new sql , tasked joining first name , last name of actors in mysql. 

select first_name ||''|| last_name name actor order actor_id;

i did not working. string of zeros. like

0 0 0 0 0 0 0 0 0

if me solve problem. wonderful.

try use concat function

select concat(first_name, last_name) name actor order actor_id;

further details here


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