MySQL Php adding <h2> to a text In the Database -

i'm trying copy 1 column column grab column name , put inside column descrption stay on top of description,so far working ,i can't figure out how put finished product h2 e.g

name = best banana description = yellow thing ever  end result name = best banana description = <h2>best banana</h2> yellow thing ever 

this code far

$sql = "update product_description set description = if(description null, name, concat(name, description));"; 

i tried :

$sql = "update product_description set description = if(description null, name, concat('<h2>name</h2>', description));"; 

but '<h2>name</h2>' displays word name in h2 , not table tips on how it?

try

$sql = "update product_description set description = if(description null, name, concat('<h2>', name, '</h2>', description));";