db.transaction((tx) => {
    tx.executeSql('SELECT * FROM pet', [], (tx, results) => {
        let myList = [];
        if (results.rows.length > 0) {
            for (var i = 0; i < results.rows.length; i++) {
                var pet = results.rows.item(i);
                myList.push(pet.owner);
            }
            this.setState({myList: myList});
        }
    });

    tx.executeSql('SELECT * FROM pet WHERE owner=?', ['petowner'], (tx, results) => {
        var len = results.rows.length;
        if (len > 0) {
            var row = results.rows.item(0);
            this.setState({petname: row.petname});
        }
    });
});


/* db.transaction((tx) => {
    tx.executeSql('INSERT INTO Users (name) VALUES (:name)', ['oguz']);
});*/


/*  'INSERT INTO table_user (user_name, user_contact, user_address) VALUES (?,?,?)',
      [user_name, user_contact, user_address],*/



/*       db.transaction((tx) => {
           tx.executeSql('INSERT INTO pet (owner, patname) VALUES (?,?)', ['kedicik', 'miyav']);

       });*/

       /*   db.transaction((tx) => {
            //  tx.executeSql('DROP TABLE IF EXISTS Users', []);
              tx.executeSql('CREATE TABLE IF NOT EXISTS Users(user_id INTEGER PRIMARY KEY NOT NULL, name VARCHAR(30))', []);
              tx.executeSql('INSERT INTO Users (name) VALUES (:name)', ['Oguz']);

              tx.executeSql('SELECT * FROM Users', [], (tx, results) => {

                  for (var i = 0; i < results.rows.length; i++) {
                      var row = results.rows.item(0);
                      this.setState({getvalue: row.name});
                      console.log('item:' , results.rows.item(i));
                  }
              });
          });*/