src/Db/Migration.php
public function dropColumn($table, $column)
    {
        $cmdPromise = $this->createCommand()->dropColumn($table, $column)->execute();
        return $this->execPromise($cmdPromise, "drop column $column from table $table");
    }
public function dropColumn($table, $column)
    {
        $cmdPromise = $this->createCommand()->dropColumn($table, $column)->execute();
        return $this->execPromise($cmdPromise, "drop column $column from table $table");
    }
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.
@return LazyPromiseInterface