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我想从某个 ID 更新表 'tourneygamesISF' 字段 'op1score' 和 'op2score' 中的表 'tourneyteamsISF' 字段 'pointsfavor' 和 'pointscontra'。

例如：

Table name = tourneygamesISF 

op1(name of row) vs. op2    -  op1score = 25 - op2score =  20

我想更新这个：

op1: (from: tourneygamesISF) = ID in tourneyteamsISF

+ pointsfavor = 25 (to: tourneyteamsISF)
+ pointscontra  = 20 (to: tourneyteamsISF)

op2: (from: tourneygamesISF) = ID in tourneyteamsISF

+ pointsfavor = 20 (to: tourneyteamsISF)
+ pointscontra  = 25 (to: tourneyteamsISF)

到目前为止，我有以下内容

UPDATE tourneyteamsISF 
INNER JOIN tourneygamesISF g1 ON (tourneyteamsISF.ID = g1.op1)
INNER JOIN tourneygamesISF g2 ON (tourneyteamsISF.ID = g2.op2)
SET pointsfavor = pointsfavor 
  + IF(g1.op1score > g1.op2score, g1.op1score - g1.op2score, 0) 
  + IF(g2.op2score > g2.op1score, g2.op2score - g2.op1score, 0)
, pointscontra = pointscontra 
  + IF(g1.op1score < g1.op2score, g1.op2score - g1.op1score, 0) 
  + IF(g2.op2score < g2.op1score, g2.op1score - g2.op2score, 0)
WHERE ID = 1;

但它给出了错误：where子句中的列'ID'不明确

我的表是这样的：

TABLE tourneyteamsISF
  ID integer autoincrement primary key,
  name varchar,
  pointsfavor integer,
  pointscontra integer

TABLE tourneygamesISF
  ID integer autoincrement primary key,
  op1 integer,
  op2 integer,
  op1score integer, /*score for team1*/
  op2score integer /*score for team2*/

我知道它必须与命名桌队和游戏的 id 相关，但我感到困惑和困惑。我会感谢我能得到的所有帮助。

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2 回答 2

2

WHERE ID = 1;<-这是你的问题。在它之前添加表名，它将编译没有任何问题。

例如。 WHERE g1.ID = 1;

发生此错误是因为 SQL 无法从您的语句ID中的表中识别您要使用的列。SELECT

于 2011-06-28T13:44:58.693 回答
1

it has to be like this - WHERE g1.ID = 1

于 2011-06-28T16:40:43.583 回答