[Kowboy]

Oh, the other thing i could do, since the column is on the corner is to put a beam across the corner and use a shoring jack on either side. Any benefit to this? The drawback that I can think of is that I would probably have to have the jacks a bit closer to the column. But maybe not

I've done this, it works, and is my favorite way.

 

[Kowboy]

What's the benefit? did you put anything under the posts as a footing?

I run a doubled 2x10 across the corner supported by a 4x4 on each end with a screw jack and plywood pad under each end. Level the plywood and plumb the 4x's. Unlike the other methods shown, this system is adjustable so you can raise your porch a tad, then set it right down on your columns. If the 2x10s are long enough, the 4xs are out of your work area.