android - Sqlite 查询使用满足多个条件的 where 条件

Question

请在这里找出问题所在

这里 _id 和 chek 是我的 db i 的列，用于编写查询以搜索具有 id =id 并检查 =number 的那些

 public Cursor query(int id){
    return myDataBase.query("question", null,"_id = "+id+ "AND " +  "chek ="+number,null, null, null, null); 


}

Answer 1

愿这对您有所帮助：

用这些行替换您的查询..

public Cursor query(int id){
return myDataBase.query("question", null,"_id = "+id+ " AND " +  "chek ="+number,null, null, null, null);

在 And : 中的双引号之间保留空格，" And "否则字符串将为
示例： _id=3And check =9

Answer 2

尝试

return myDataBase.query("question", null,"_id = "+id+ " AND " +  "chek ="+number,null, null, null, null); 

Answer 3

首先检查你的sql查询语法是否正确

您可以使用原始查询

 String SQL= "select * from question where _id = "+id+ " and chek ="+number+";
    Log.d("SQL::", SQL);
    Cursor cursor = db.rawQuery(SQL, null);

Answer 4

如果尚未解决，请用这些行替换您的查询。

public Cursor query(int id){
return myDataBase.query("question", null,"(_id = "+id+ " AND " +  "chek ="+number+")",null, null, null, null);