Oracle判断一个字符串是否包含另一个字符串

create or replace function tagSplit(v_a varchar2, v_b varchar2)
  return number as
  counta number;
  countb number;
  countc number;
Begin




  counta := 0;
  countb := 0;
  countc := 0;




  select count(1)
    into counta
    from (SELECT REGEXP_SUBSTR(v_a, '[^,]+', 1, rownum) deptida
            FROM DUAL
          CONNECT BY ROWNUM <=
                     LENGTH(v_a) - LENGTH(REPLACE(v_a, ',', '')) + 1) aa,
         (SELECT REGEXP_SUBSTR(v_b, '[^,]+', 1, rownum) deptidb
            FROM DUAL
          CONNECT BY ROWNUM <=
                     LENGTH(v_b) - LENGTH(REPLACE(v_b, ',', '')) + 1) bb
   where aa.deptida = bb.deptidb;




  select count(1)
    into countb
    from (SELECT REGEXP_SUBSTR(v_b, '[^,]+', 1, rownum) deptidb
            FROM DUAL
          CONNECT BY ROWNUM <=
                     LENGTH(v_b) - LENGTH(REPLACE(v_b, ',', '')) + 1) bb;




  if counta = countb then
    countc := 1;
    return countc;
  end if;
  return countc;
end tagSplit;