exists method

Future<bool> exists({
  1. required String schema,
  2. required String fields,
  3. required SqlWhereBuilder builder,
})

是否存在数据 schema 数据表结构 fields 数据表字段

Implementation

Future<bool> exists({required String schema, required String fields, required SqlWhereBuilder builder}) async {
  var _count = (await count(schema: schema, fields: fields, builder: builder)) ?? 0;
  return _count > 0 ? Future.value(true) : Future.value(false);
}