yii\db\ColumnSchemaBuilder::defaultExpression PHP 메소드

Specify the default SQL expression for the column.

부터: 2.0.7

public defaultExpression ( string $default )
$default	string	the default value expression.

    public function defaultExpression($default)
    {
        $this->default = new Expression($default);
        return $this;
    }

ColumnSchemaBuilder