select logid,userid,logtime,url,description, (case operatetype when operatetype = 0 then 新增 when operatetype=1 then 修改 else 删除 end case) from log ???? 1. case select logid,userid,logtime,url,description,( case when operatetype = 0 th
select logid,userid,logtime,url,description, (case operatetype when operatetype = 0 then ’新增’ when operatetype=1 then ’修改’ else ’删除’ end case) from log ????
1. case
select logid,userid,logtime,url,description,(
case
when operatetype = 0
then ’新增’
when operatetype=1
then ’修改’
else ’删除’
end ) from log
2.decode的写法:
select logid,userid,logtime,url,description,
decode(operatetype,0,’新增’,1,’修改’,’删除’) operationname
from log
建议用decode的写法
，
