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claimno  mark      checkdate
0001001  17,15,6  2009-9-10
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claimno  mark      checkdate
0001001    17      2009-9-10
0001001    15      2009-9-10
0001001    6        2009-9-10
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http://www.itpub.net/thread-1017026-1-1.html

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create or replace function str_cnt(aa varchar2,bb varchar2)
return number
is
num number(10):=0;
begin
for i in 1..length(aa) loop
if instr(aa,bb,1,i)>0 then
num:=num+1;
else
return num;
end if;
end loop;
return num;
end;
/

SQL>  select str_cnt('a,´óº£ºÍ´ó¸çbd','´ó') from dual;

STR_CNT('A,´óº£ºÍ´ó¸çBD','´ó')
------------------------------
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