Emulate set_column_null and set_column_default on ado/access
Emulate set_column_null and set_column_default on ado/access

Use the schema to get other data related to the column, and then
rename the column to a backup column, and rename the backup column
to the original name.

seeARMS/sequel,nicohvi/sequel,beni55/sequel,uhoh-itsmaciek/sequel,yazshel/sequel,uhoh-itsmaciek/sequel,t-morgan/sequel,chef/sequel,gferguson-gd/sequel,gferguson-gd/sequel,pfarrell/sequel,dennis-d/custom_sequel,beni55/sequel,t-morgan/sequel,freshpay/sequel,reubano/sequel,dennis-d/custom_sequel,offshore-safety/sequel,mpalmer/sequel,reubano/sequel,offshore-safety/sequel,seeARMS/sequel,nicohvi/sequel,pfarrell/sequel,nju520/sequel,davidbegin/sequel,davidbegin/sequel,Marketcircle/sequel,mpalmer/sequel,knut2/sequel,freshpay/sequel,knut2/sequel,nju520/sequel,offshore-safety/sequel,bigfix/sequel,yazshel/sequel