Can't use a built-in SQL function as a default value with SQL Server

I have a column 'created' and 'modified' which I would like to default to SQL Server's getutcdate() function. However, setting this as the default in Phinx results in a default value of a literal string 'getutcdate()', which causes SQL Errors when creating the row and 'created' or 'modified' are not specified.

The same occurs with a datatype of uuid which I set the default to newid() in SQL Server. Phinx converts this to a string 'newid()', resulting in SQL errors if the column isn't specified.

For example:

$table = $this->table('objects');
$table->addColumn('created', 'datetime', ['default' => 'getutcdate()', 'null' => false]);
$table->create()

Generates this SQL:

CREATE TABLE objects (
  id INT NOT NULL IDENTITY(1,1),
  created DATETIME NOT NULL DEFAULT 'getutcdate()',  # Notice the quotes
CONSTRAINT PK_objects  PRIMARY KEY ([id]));

When I need it to generate this SQL:

CREATE TABLE objects (
  id INT NOT NULL IDENTITY(1,1),
  created DATETIME NOT NULL DEFAULT (getutcdate()),  # No quotes!
CONSTRAINT PK_objects  PRIMARY KEY ([id]));

I haven't tried this with other SQL adapters, so I don't know if this applies to them as well.

Presently the work around is to manually define the default constraint via $this->execute().

The report does not name files or tests; start by reproducing the migration with the SQL Server adapter and trace how the column default is rendered. Done means function defaults such as getutcdate() and newid() are emitted without string quotes while ordinary defaults remain valid.