Nette\Database\Table\SqlBuilder::getColumnChainsRegxp PHP 메소드

    private function getColumnChainsRegxp()
    {
        return '~
			(?(DEFINE)
				(?P<word> [\\w_]*[a-z][\\w_]* )
				(?P<del> [.:] )
				(?P<node> (?&del)? (?&word) (\\((?&word)\\))? )
			)
			(?P<chain> (?!\\.) (?&node)*)  \\. (?P<column> (?&word) | \\*  )
		~xi';
    }