Android開發教程之--sql語句

一、建立/刪除表

String sql="Create table "+TABLE_NAME+"("+FIELD_ID+" integer primary key autoincrement,"  +FIELD_TITLE+" text );";
        db.execSQL(sql);

String sql=" DROP TABLE IF EXISTS "+TABLE_NAME;
        db.execSQL(sql);

 

 

二、查詢

從表中查詢資料（in）   SELECT * FROM meta where media_id in (1,2,9);

 

三、插入

SQLiteDatabase db=this.getWritableDatabase();
        ContentValues cv=new ContentValues();
        cv.put(FIELD_TITLE, Title);
        long row=db.insert(TABLE_NAME, null, cv);

四、更新

SQLiteDatabase db=this.getWritableDatabase();
        String where=FIELD_ID+"=?";
        String[] whereValue={Integer.toString(id)};
        ContentValues cv=new ContentValues();
        cv.put(FIELD_TITLE, Title);
        db.update(TABLE_NAME, cv, where, whereValue);

五、刪除

SQLiteDatabase db=this.getWritableDatabase();
        String where=FIELD_ID+"=?";
        String[] whereValue={Integer.toString(id)};
        db.delete(TABLE_NAME, where, whereValue);

 作者: dyllove98