SQL结合CASE和AND

Question

如何将SQL CASE语句与多个AND组合，以便我可以检查多个条件，即 我想将region从233随机更改为244 shopid = 455：

select
    id,
    case region
       when 233 and shopid = 455 and FLOOR(RAND()*(3-1)+1) = 1 then 244
       when 233 and shopid = 455 and FLOOR(RAND()*(3-1)+1) = 2 then 233
       else region
    end
from 
    table1

我收到此错误：

  

操作数＆＃233; 233＆＃39;谓词的一部分＆233; AND shopid = 455＆＃39;应该返回类型＆＃39; BOOLEAN＆＃39;但返回类型＆＃39; INT＆＃39;。

FYI FLOOR(RAND()*(3-1)+1)将产生1或2

Answer 1

使用其他形式的case：

select
id,
case 
  when region = 233 and shopid = 455 and FLOOR(RAND()*(3-1)+1) = 1 then 244
  when region = 233 and shopid = 455 and FLOOR(RAND()*(3-1)+1) = 2 then 233
  else region
end
from table1