Question

我收到错误子查询返回多个值这是我的查询

SELECT d.Description ,s.Version , d.UtiPrefix , d.UTI , d.PrimaryAC , s.ReportingObb , s.ReportingObb , d.LEI , d.LEI_Countp  , d.LEI  , s.ReportingDeleg ,d.Curr , c.Trade_Party_Domicile ,c.LEI_SGR 
       , Price =( select Price 
                  From Price 
                  inner join Derivatives 
                  on Derivatives.UTI = Price.UTI)
FROM Derivatives as d
INNER JOIN Settings as  s
ON d.LEI_SGR  = s.LEI_SGR
INNER JOIN Clients c
ON d.LEI_SGR = c.LEI_SGR

Answer 1

使用相关子查询

Price =( select Price From Price p WHERE d.UTI = p.UTI)

Answer 2

我怀疑这会返回多行

( select Price 
  From Price 
  inner join Derivatives 
  on Derivatives.UTI = Price.UTI )

为什么要将子查询与连接混合使用？

SELECT d.Description ,s.Version , d.UtiPrefix , d.UTI , d.PrimaryAC , s.ReportingObb 
     , s.ReportingObb , d.LEI , d.LEI_Countp  , d.LEI  , s.ReportingDeleg ,d.Curr 
     , c.Trade_Party_Domicile ,c.LEI_SGR 
     , p.Price
FROM Derivatives as d
INNER JOIN Settings as  s
   ON d.LEI_SGR  = s.LEI_SGR
INNER JOIN Clients c
   ON d.LEI_SGR = c.LEI_SGR
INNER JOIN Price p
   ON p.UTI = d.UTI

子查询返回多于1个值

2 个答案: