Like you mentioned that 1.2 will introduce sort columns feature to help users to more easily specify which columns need to build index. for example : "create table(c1...c7) tblproperties('sort_columns' = 'c7,c3')".
As you know , before 1.1 CarbonData by default builds MDK index as per the order of columns in creation table, the feature will be kept in future versions, so you can still use "create table (c1,c2,...c7")" to build index.
since we already have many rmdb sqls scripts,we don't want to change them too much when migrating to carbon.
suppose we already have sql script like:
"create table (c1,c2,...c7")",
If we want to change column order to shift most often used column ahead when query data,i think it's better change it this way like:
"create table(c1...c7) tblproperties('sort_columns' = 'c7,c3')"
because the former way just reordering columns without adding extra settings,which is more readable to thos who is familiar with rmdb but not with carbon.