ddl support comment

[cockroachPeng]

now,when generate ddl,con't support the commont.

i think the commont is very useful!

[cockroachPeng]

i use mysql

[l932]

the ERDColumn has no documentation property :(

[Martini024]

really wish can support comment feature, that way can easily write in one place, other db client can easily generate data dictionary

[Martini024]

ok, I checked and found someone has already added this feature, but not confirm and merge to master yet, then I made my own too, only takes several hours maybe

[tfnick]

i use mysql

yes, I think 'comment feature' is important too