Android SQLite不止一个WHERE

我一直在寻找它,但找不到所需的东西.我在android中有一个SQLite表,我想知道rawquery对于多个WHERE子句的影响.我的意思是,我想知道一个表的所有记录以及其中两个列的值为1的那些列的所有列.

我该怎么办？

我试过了：

String selectQuery = "SELECT  * FROM " + TABLE_NAME 
        + " WHERE " + KEY_ONE + " = " + String.valueOf(var1)
        + " AND WHERE " + KEY_TWO + " = " + String.valueOf(Var2);

SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, null);

但这不起作用..

感谢您的帮助：D

解决方法:

删除第二个WHERE：

+ " AND " + KEY_TWO + " = " + String.valueOf(Var2);

还要注意,字符串必须用撇号引起来：

String selectQuery = "SELECT  * FROM " + TABLE_NAME 
    + " WHERE " + KEY_ONE + " = '" + String.valueOf(var1)
    + "' AND " + KEY_TWO + " = '" + String.valueOf(Var2) + "'";

如果使用以下增强语法,那就更好了：

String selectQuery = "SELECT  * FROM " + TABLE_NAME 
    + " WHERE " + KEY_ONE + " = ? AND " + KEY_TWO + " = ?";

SQLiteDatabase db = this.getWritableDatabase();
Cursor cursor = db.rawQuery(selectQuery, new String[]{String.valueOf(var1), String.valueOf(var2)});

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