sql_io.py: put_table(): ensure_cond(): When deleting rows rows that do not satisfy the condition, handle sql.DoesNotExistExceptions caused by columns in the condition that were not replaced with NULL. These occur when out_table is a function, and the columns of the table the condition relates to therefore can't be found using out_table.
sql_io.py: put_table(): ensure_cond(): When deleting rows rows that do not satisfy the condition, handle sql.DoesNotExistExceptions caused by columns in the condition that were not replaced with NULL. These occur when out_table is a function, and the columns of the table the condition relates to therefore can't be found using out_table.