Question

用这个查询我选择一条记录，现在我想选择带有下一个ID的记录，所以我应该把这两个SELECT结合起来，我该怎么办？

String sql ="SELECT _id, date, score, score1 FROM Points 
WHERE score = '"+score_ricevuto+"' ORDER BY date DESC";

String sql ="SELECT _id, score, score2 FROM
 Points WHERE score = '"+score_ricevuto+"';

Answer 1

像这样：

SELECT _id, date, score, score1, score2 
  FROM Points 
 WHERE score = '"+score_ricevuto+"' 
 ORDER BY date DESC";

Answer 2

这是选择多个记录的更好方法。

SELECT _id, date, score, score1 FROM Points  WHERE score = '"+score_ricevuto+"' and _id IN (" + id + "," + (id+1) + " ORDER BY date DESC";

Android选择多条记录

2 个答案: