Automatic content-based append detection

A system, comprising:

• one or more processors configured to:
• identify, based at least in part on contents of a first data set comprising a first plurality of columns and contents of a second data set comprising a second plurality of columns:
• a plurality of matching columns comprising:
• one or more columns among the first plurality of columns;
• and
• corresponding one or more matching columns among the second plurality of columns, wherein the one or more columns among the first plurality of columns and the corresponding one or more matching columns among the second plurality of columns have at least some matching content;
• and
• a plurality of non-matching columns comprising:
• one or more columns among the first plurality of columns that do not match with any columns among the second plurality of columns;
• and
• one or more columns among the second plurality of columns that do not match with any columns among the first plurality of columns;
• obtain a specification of:
• a first one or more non-matching columns to be appended to a second one or more non-matching columns, the first one or more non-matching columns and the second one or more non-matching columns being selected among the plurality of non-matching columns;
• a change to the plurality of matching columns;
• or
• both;
• and
• append at least a portion of the first data set and at least a portion of the second data set according to the plurality of matching columns and the specification;
• and
• one or more memories coupled to the one or more processors and configured to provide the one or more processors with instructions.