使用SQLite.
ltrim(ltrim(substr(tablename.time, 11),'0123456789'),'-') as main_time
我有上面的trim函数,从我的字符串中删除前11个字符.
2013-10-28 09:29:57.987 -- Original String.
09:29:57.987 -- New String.
但是我仍然希望从字符串末尾删除最后四个字符,将其转换为以下字符:
09:29:57