drop FUNCTION cgns_02.f_splitstr@CREATE FUNCTION cgns_02.f_splitstr( srcsql varchar(3999)  )  RETURNS varchar(3999) BEGIN ATOMIC/********************************************function name  : split string from one column *function create time : 2016-11-22*******************************************/return with n(str, ori, pos) as (values (to_char(srcsql)||',', 1,locate(',',to_char(srcsql)||','))union allselect  str,  pos+length(','), locate(',', str, pos+length(','))from nwhere locate(',', str,pos+length(','))>0) ,temp as(select distinct substr(str, ori, pos-ori) as result from n)select listagg(result,',') from temp;END