Sqlite查询使用具有多个条件的条件来满足

Question

请找出这里有什么问题

这里_id和chek是我的db i的列，用于编写查询来搜索那些id = id和check = number

的列

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


}

Answer 1

这可以帮到你：

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

Answer 2

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 3

<强>尝试

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