javascript - SQLite Nativescript中按列名读取查询结果

Question

我使用 nativescript-sqlite 插件已经有一段时间了。我正在从工作正常的表中选择数据。我想通过表的列名访问这些数据，这就是挑战开始的地方。

viewModel.selectAllRecords = function () {
    new sqlite("etudiz.db", function (err, db) {
        db.all("SELECT post_title,post_cat FROM posts ORDER BY id", [],  function (tableErr, rs) {                    
            var ObjLength = rs.length;
            var i = 0;
            for(i >= 0; i<ObjLength; i++) {
                console.log(rs[i]['post_title']) //This is undefined
                console.log(rs[i][0])//This is working well
            }
        });
    });
};

我更喜欢按列名读取数据，而不是 0,1,2...等。是否有解决方法或者 SQLite 就是这样设计的？

Answer 1

documentation说:

DB.resultType()

Parameters

• Pass in Sqlite.RESULTSASOBJECT or Sqlite.RESULTSASARRAY to change the result sets configuration This will set the database to return the results in which ever choice you make. (Default is RESULTSASARRAY)

Sqlite.RESULTSASARRAY - Returns results as Arrays (ex: select name, phone --- results [[name,phone]])
Sqlite.RESULTSASOBJECT - Returns results as Objects (ex: select name, phone --- results [{name: name, phone: phone}]