addGroupBy method

void addGroupBy(
  1. dynamic columns
)

---------- GROUP ----------

Implementation

void addGroupBy(dynamic columns) {
  if (columns is String) {
    groupByColumns.add(columns);
  } else if (columns is Iterable<String>) {
    groupByColumns.addAll(columns);
  } else {
    throw Exception('groupBy expects String or List<String>');
  }
}