protected function parseKey($key, $options = [])
{
$key = trim($key);
if (strpos($key, '$.') && false === strpos($key, '(')) {
// JSON字段支持
list($field, $name) = explode('$.', $key);
$key = $field . '->>\'' . $name . '\'';
} elseif (strpos($key, '.')) {
list($table, $key) = explode('.', $key, 2);
if (isset($options['alias'][$table])) {
$table = $options['alias'][$table];
}
}
if (isset($table)) {
$key = $table . '.' . $key;
}
return $key;
}