oracle查詢自定義字段只取到了第一個字符

select i.code,(case when i.code='50001' then '服務采集頻率' else '主機采集頻率' end)name,
        decode(i.start_time,'','-',null,'-',to_char(i.start_time,'yyyy-mm-dd hh24:mi:ss'))start_time,
        nvl(i.interval,'-')interval,
        nvl(i.overtime,'-')overtime,
        nvl(i.createby,'-')createby 
from moni_cfg_clt_interval i where i.code in(50001,50014)

這樣取的話，name只會取到第一個字符，“服”或“主”

原因是類型長度問題的，默認是java.lang.character

改正為：

select i.code,to_multi_byte((case when i.code='50001' then '服務采集頻率' else '主機采集頻率' end))name,"+
        decode(i.start_time,'','-',null,'-',to_char(i.start_time,'yyyy-mm-dd hh24:mi:ss'))start_time,
        nvl(i.interval,'-')interval,
        nvl(i.overtime,'-')overtime,
        nvl(i.createby,'-')createby 
from moni_cfg_clt_interval i where i.code in(50001,50014)