select logid,userid,logtime,url,description, (case operatetype when operatetype = 0 then ’新增’ when operatetype=1 then ’修改’ else ’刪除’ 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 ’刪除’
end ) from log
2.decode的寫法:
select logid,userid,logtime,url,description,
decode(operatetype,0,’新增’,1,’修改’,’刪除’) operationname
from log
建議用decode的寫法
