PreparedStatement中in子句的處理

測試環境: Oracle 10g

1.原理

select * from table(split('a,b,c'))

結果：

a
b
c

2.結論

對於相似：

select * from xxx_table where xxx_column in ('xxa', 'xxb', 'xxc')

可動態傳入in子句參數

select * from xxx_table where xxx_column in (select * from table(split(?)))

PreparedStatement stmt = conn.prepareStatement(sql);
stmt.setObject(1, "xxa,xxb,xxc");

附split函數：

create or replace type split_tbl as table of varchar(32767);
/

create or replace function split
(
  p_list varchar2,
  p_del varchar2 := ','
) return split_tbl pipelined
is
  l_idx    pls_integer;
  l_list    varchar2(32767) := p_list;
  l_value    varchar2(32767);
begin
  loop
    l_idx := instr(l_list,p_del);
    if l_idx > 0 then
      pipe row(substr(l_list,1,l_idx-1));
      l_list := substr(l_list,l_idx+length(p_del));
    else
      pipe row(l_list);
      exit;
    end if;
  end loop;
  return;
end split;
/

原文：http://stackoverflow.com/questions/178479/preparedstatement-in-clause-alternatives