postgresql 与 OR 时的情况
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时间:2020-10-21 02:14:39 来源:igfitidea点击:
CASE WHEN with OR
提问by Helio Ferreira
there is a way to use OR with CASE WHEN, like this?
有一种方法可以像这样在 CASE WHEN 中使用 OR 吗?
SELECT
case 'brasil'
when 'chile' OR 'brasil' THEN
'ok'
when 'argentina' then
'ok2'
when 'venezuela' THEN
'ok3'
ELSE
'chaves'
end;
回答by zedfoxus
Yes, you are thinking about it correctly. You can use OR or IN with your select..case statement:
是的,你的想法是正确的。您可以在 select..case 语句中使用 OR 或 IN:
select
case
-- one way or writing OR
when country = 'brasil' or country = 'chile' then '....'
-- another way of writing OR
when country in ('china', 'japan') then '...'
else '..'
end
from tablename;
Example: http://sqlfiddle.com/#!15/c1cef/2