framework/db/Migration.php
public function dropColumn($table, $column)
    {
        $time = $this->beginCommand("drop column $column from table $table");
        $this->db->createCommand()->dropColumn($table, $column)->execute();
        $this->endCommand($time);
    }
public function dropColumn($table, $column)
    {
        $time = $this->beginCommand("drop column $column from table $table");
        $this->db->createCommand()->dropColumn($table, $column)->execute();
        $this->endCommand($time);
    }
Builds and executes a SQL statement for dropping a DB column.
@param string $table the table whose column is to be dropped. The name will be properly quoted by the method.
@param string $column the name of the column to be dropped. The name will be properly quoted by the method.