当我对数据执行此查询时，我正在搏斗以找到任何数据。数据结构如下：users:id_123:name:"namea"surname:"surnamea"id_124:name:"nameb"surname:"surnameb"-//FinduserbyidFIRDatabaseReference*ref=[[FIRDatabasedatabase]referenceWithPath:@"users"];FIRDatabaseQuery*qry=[refqueryEqualToValue:@"id_123"];[qryobserveEventType:FIRDataEventTypeChildAd