public function select(?string $expression = null, ...$args): self
	{
		$this->dirty();
		$this->select = $expression === null ? null : [$expression];
		$this->args['select'] = $args;
		return $this;
	}
public function select(?string $expression = null, ...$args): self
	{
		$this->dirty();
		$this->select = $expression === null ? null : [$expression];
		$this->args['select'] = $args;
		return $this;
	}
public function select ( ? string $ expression = null , ... $ args ) : self { $ this -> dirty ( ) ; $ this -> select = $ expression === null ? null : [ $ expression ] ; $ this -> args [ 'select' ] = $ args ; return $ this ; }
Sets expression as SELECT clause. Passing null sets clause to the default state.
Sets expression as SELECT clause . Passing null sets clause to the default state .