Add an new column to the ATOM table with same value for each row.
colname (str) – the new column name
coltype (str) – data type of the new column. Default to float.
value (int/float/str) – value for the new column. Default to 0.
Examples
>>> db.add_column('id', coltype='str', value='positive')
pdb2sql.add_column()
update
update_column