code: public static AlterColumn alterColumn(Expression table, Name column, DbColumnType dbColumnType, DbColumnConstraint... constraints) {
          return alterColumn(
                  table,
                  dbColumn().name(column.getName()).type(dbColumnType).addConstraints(constraints).build());
      }
docs: Alter column operator.
  
  @param table        The table containing the column.
  @param column       The column of the table.
  @param dbColumnType The db column type.
  @param constraints  The constraints of the column.
  @return The alter column operator.