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 ;

这是要返回HOME_SCORE和AWAY_SCORE的总和，我得到以下错误

错误开始于第242行：命令-从MATCH中选择（选择SUM（HOME_SCORE）个总数）错误报告-未知命令

错误从第243行开始-命令中的错误-+错误报告-未知命令

查询运行方式：查询结果

Answer 1

如果您想这样做，可能缺少括号，请将脚本重写为select((select SUM(HOME_SCORE) total from MATCH ) + (select SUM(AWAY_SCORE) total from MATCH)) as "GOALS SCORED" From dual ;

或者，为简化起见，您可以尝试select(select SUM(HOME_SCORE) + SUM(AWAY_SCORE) total from MATCH ) as "GOALS SCORED" From dual ;