SQL子查询错误

Question

select(select SUM(HOME_SCORE) total from MATCH )
        +
(select SUM(AWAY_SCORE) total from MATCH) 
as "GOALS SCORED"
From dual ;

这是为了返回HOME_SCORE和AWAY_SCORE的总和我得到以下错误

  

从命令行中的第242行开始出错 -   选择（从MATCH中选择SUM（HOME_SCORE）总计）   错误报告 -   未知命令

     

从命令行开始出错：243 -   +   错误报告 -   未知命令

     

查询运行：查询结果

Answer 1

如果您想要这样做，也许您缺少括号请将您的脚本重写为此select((select SUM(HOME_SCORE) total from MATCH ) + (select SUM(AWAY_SCORE) total from MATCH)) as "GOALS SCORED" From dual ;

或为简化此操作，您可以尝试此select(select SUM(HOME_SCORE) + SUM(AWAY_SCORE) total from MATCH ) as "GOALS SCORED" From dual ;