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