有人可以帮助我: 我有5个表的DB:DB diagram stat_list表预先填充了5个值(Att,pass,TD,inter,pass)。我想在android中创建一个表,它将显示每个玩家的表Stat_list中所有值的总和。非常感谢!
答案 0 :(得分:0)
String sQry = "SELECT * FROM Stat_list;";
SQLiteDatabase db = null;
int count = -1;
Cursor cursor = null;
try {
db = SQLiteOpenHelper.getReadableDatabase();
cursor = db.rawQuery(sQry, null);
if (cursor.moveToFirst()) {
do {
int playerScore = Integer.parseInt(cursor.getString(1)) +
Integer.parseInt(cursor.getString(2)) +
Integer.parseInt(cursor.getString(3)) +
Integer.parseInt(cursor.getString(4))
ContentValues playerScores = new ContentValues();
playerScores.put(THE_NAME_OF_THE_SCORE_COLUMN, playerScore);
try{
db.update(NAME_OF_TABLE_WITH_SUMMED_PLAYER_SCORES,playerScores, "PlayerName = " cursor.getString(1), null);
}catch(SQLiteException e){}
}
while (cursor.moveToNext());
}
}
catch (SQLiteException e) {
Log.d("SQL Error", e.getMessage());
}
finally {
cursor.close();
db.close();
}
上面的代码片段从数据库中提取信息,汇总分数并将其插入另一个表中。您必须将int设置为特定值,例如正确的列和表名。