我的parse tableview搜索效率低下（swift / objectiveC）？

Question

所以我的解析服务器中有很多字段，我的iOS应用程序中有一个tableview。对于每个单元格，都有一堆数据，就像我之前说过的那样。但问题是我想让用户能够搜索该数据。我的问题是，如果我可以说50,000个pfobjects列表和我的解析服务器，并且用户正在搜索这么多字段，它是否会非常昂贵，或者搜索不是那么昂贵。请记住，搜索到的所有内容都是小写的，因此不会成为问题。这是我的代码。我有31个字段，我正在搜索文本。这样做不好吗？如果我有数十万用户，它会在我的服务器端增加大量账单吗？ Heres是我的代码。

var query : PFQuery<PFObject>!
             query.order(byDescending: "createdAt")
            let fiel1 = PFQuery(className: "Real Estate")
            field1.whereKey("field one", contains: search)
            let field2 = PFQuery(className: "Real Estate")
            field2.whereKey("field two", contains: search)
            let field3 = PFQuery(className: "Real Estate")
            field3.whereKey("field three", contains: search)
            let field4 = PFQuery(className: "Real Estate")
            field3.whereKey("field four", contains: search)
            let field5 = PFQuery(className: "Real Estate")
            field5.whereKey("field 5", contains: search)
            let field6 = PFQuery(className: "Real Estate")
            field6.whereKey("field 6", contains: search)
            let field7 = PFQuery(className: "Real Estate")
            field7.whereKey("field 7", contains: search)
            let field8 = PFQuery(className: "Real Estate")
            field8.whereKey("field 8", contains: search)
            let field9 = PFQuery(className: "Real Estate")
            field9.whereKey("field 9", contains: search)
            let field10 = PFQuery(className: "Real Estate")
            field10.whereKey("field 10", contains: search)
            let field11 = PFQuery(className: "Real Estate")
            field11.whereKey("field 11", contains: search)
            let field12 = PFQuery(className: "Real Estate")
            field12.whereKey("field 12", contains: search)
            let field13 = PFQuery(className: "Real Estate")
            field13.whereKey("field 13", contains: search)
            let field14 = PFQuery(className: "Real Estate")
            field14.whereKey("field 14", contains: search)
            let field15 = PFQuery(className: "Real Estate")
            field15.whereKey("field 15", contains: search)
            let field16 = PFQuery(className: "Real Estate")
            field16.whereKey("field 16", contains: search)
            let field17 = PFQuery(className: "Real Estate")
            field17.whereKey("field 17", contains: search)
            let field18 = PFQuery(className: "Real Estate")
            field18.whereKey("field 18", contains: search)
            let field19 = PFQuery(className: "Real Estate")
            field19.whereKey("field 19", contains: search)
            let field20 = PFQuery(className: "Real Estate")
            field20.whereKey("field 20", contains: search)
            let field21 = PFQuery(className: "Real Estate")
            field21.whereKey("field 21", contains: search)
            let field22 = PFQuery(className: "Real Estate")
            field22.whereKey("field 22", contains: search)
            let field23 = PFQuery(className: "Real Estate")
            field23.whereKey("field 23", contains: search)
            let field24 = PFQuery(className: "Real Estate")
            field24.whereKey("field 24", contains: search)
            let field25 = PFQuery(className: "Real Estate")
            field25.whereKey("field 25", contains: search)
            let field26 = PFQuery(className: "Real Estate")
            field26.whereKey("field 26", contains: search)
            let field27 = PFQuery(className: "Real Estate")
            field27.whereKey("field 27", contains: search)
            let field28 = PFQuery(className: "Real Estate")
            field28.whereKey("field 28", contains: search)
            let field29 = PFQuery(className: "Real Estate")
            field29.whereKey("field 29", contains: search)
            let field30 = PFQuery(className: "Real Estate")
            field30.whereKey("field 30", contains: search)
            let objectId = PFQuery(className: "Real Estate")
            objectId.whereKey("objectId", contains: search)
            query = PFQuery.orQuery(withSubqueries: [field1, field2, field3, field4, field5, field6, field7, field8, field9, field10, field11, field12, field13, field14, field15, field16, field17, field18, field19, field20, field21, field22, field23, field24, field25, field26, field27, field28, field29, field30, objectId])