mysql - 在 WHERE 中使用多个值进行更新

Question

当数据库中的字段符合两个条件时，我需要更新该字段 下面是我的代码
这是一个对于 WHERE 条件中的一个值运行良好的查询

query2 = "UPDATE  Game_mygame 
          SET game_played = "+str(set_game_played)+" 
          WHERE home_teamID = "+str(i.home_teamID) 

但我需要匹配 WHERE 中的两个值，并且我正在尝试以下操作

query2 = "UPDATE  Game_mygame 
              SET game_played = "+str(set_game_played)+" 
              WHERE home_teamID = "+str(i.home_teamID)+ 
                    "AND away_teamID = "+str(i.away_teamID)  

但是这个给出了语法错误

请告诉我哪里做错了

Answer 1

我认为第一个 WHERE 条件和 AND 之间没有空格。因此，它将使您的查询类似于 WHERE home_teamID=xyzAND 而不是 WHERE home_teamID=xyz AND。因此，您需要在 AND 之前添加一个额外的空格(与您在 WHERE 之前添加的空格相同)

query2 = "UPDATE  Game_mygame 
              SET game_played = "+str(set_game_played)+
              " WHERE home_teamID = "+str(i.home_teamID)+ 
              "AND away_teamID = "+str(i.away_teamID)
           ---^^--- Space is missing here

所以试试这个:

query2 = "UPDATE  Game_mygame 
              SET game_played = "+str(set_game_played)+
              " WHERE home_teamID = "+str(i.home_teamID)+ 
              " AND away_teamID = "+str(i.away_teamID)