添加特定的多行（SQL）

我是SQL新手，我想寫一個查詢來在表中添加多行。添加特定的多行（SQL）

例如：

表：

matchid|player1id|player2id|player1score|player2score 
101 |20  |10  |0   |100 
101 |20  |10  |0   |100 
101 |20  |10  |0   |100 
201 |20  |10  |645   |0 
201 |20  |10  |100   |700 
201 |20  |10  |0   |100

需要的輸出：

matchid|player1id|player2id|player1score|player2score 
101 |20  |10  |0   |300 
201 |20  |10  |745   |800

注：我必須這樣做，而不使用GROUP BY

來源

2015-12-03 Khubaib

'SELECT \t matchid， \t player1id， \t player2id， \t player1score = SUM（player1score）， \t player2score = SUM（player2score） FROM yourTable GROUP BY \t matchid，player1id，player2id' –

爲什麼你不想使用'GROUP BY'？ –

，因爲它的運營成本很高 – Khubaib

在不使用GROUP BY：

SELECT * 
FROM (
    SELECT DISTINCT matchid, player1id, player2id FROM tbl 
) AS t 
CROSS APPLY(
    SELECT 
     SUM(player1score), SUM(player2score) 
    FROM tbl 
    WHERE 
     matchid = t.matchid 
     AND player1id = t.player1id 
     AND player2id = t.player2id 
) AS x(player1score, player2score)

來源

2015-12-03 05:46:38

非常感謝@Felix。有效：） – Khubaib

SELECT 
    matchid, player1is, player2id, 
    SUM(player1score) as player1score, 
    SUM(player2score) as player2score 
FROM 
    tablename 
GROUP BY 
    matchid, player1id, player2id

來源

2015-12-03 05:28:16

@downvoter，爲什麼投下票？ –

感謝迴應kaushik。對不起，我忘了提及我不想使用group by子句。 – Khubaib

@wlcm好友..... –

select matchid,player1id,player2id,SUM(player1score) as 
player1score,SUM(player2score) as player2score 
FROM table1 
Group by player1id,player2id, matchid

來源

2015-12-03 05:35:43 tshoemake

感謝您的回覆tshoemake。對不起，我忘了提及我不想使用group by子句。 – Khubaib

這是否滿足要求？：

select 
    matchid, player1id, player2id, 
    (select sum(player1score from Table t2 where t2.matchid = t.matchid) as player1score, 
    (select sum(player2score from Table t2 where t2.matchid = t.matchid) as player2score 
from 
    (select distinct matchid, player1id, player2id from Table) t

來源

2015-12-03 05:45:35 shawnt00

添加特定的多行（SQL）

回答

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