SQL 子查询：select 所有值，但一种类型的值仅高于

Question

是否可以获取所有货币的所有价值，但只获取一种特定货币高于 10000 美元的价值？

select case
    when currency_id = '57' then 'EUR'
    when currency_id = '26' then 'USD'
    when currency_id = '51' then 'HKD' end as CCY,
    amount, ECPNBR, value_date
    from money_transfer
    where (select amount from money_transfer where currency_id ='26')>10000 order by amount desc;

出现错误“子查询 returns 超过 1 个值...”

Answer 1

也许你的查询如下

select 
 case
  when m.currency_id = '57' then 'EUR'
  when m.currency_id = '26' then 'USD'
  when m.currency_id = '51' then 'HKD'
  else '' 
 end,
 m.amount, m.ECPNBR, m.value_date
from money_transfer  where ( m.currency_id='26' and m.amount>10000) OR (m.currency_id<>'26')
order by m.amount desc;

SQL 子查询：select 所有值，但一种类型的值仅高于

SQL sub-query: select all values but for one type of values only higher than

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subquery

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