the artistic simple way is to create an animation of the shattering column, if the column getting hit just oneshot the animation

the programmatically (simple) solution is to create a normal column model
and a bunch of gibbs of the column
when the column gets hit, destroy the original model, replace it with the gibs models and set each model to a physics entity, then apply some force.

there are also solutions that can create shattered meshes from an already existing model but they are complex and cost some bucks