> Adding NON NULL columns similarly requires the value to be populated for every row at the point in time when the DML command is run. Instead, the default func

> Adding NON NULL columns similarly requires the value to be populated for every row at the point in time when the DML command is run. Instead, the default function should be added to the metadata, and then the change should roll out incrementally over time. You mean just like mysql, oracle, sybase and mssql do ?