How to Convert a Column value to Rows which has ';' as delimitter.

Question

COLA COLB
1 London University; Harvard University(1947; Masters; Distinction); Stanford University(1948, Masters; Distinction); Cambridge University(1949; Graduation, First class)
Which needs to be transformed as
COLA COLB
1 London University
1 Harvard University(1947 Masters Distinction)
1 Stanford University(1948, Masters Distinction)
1 Cambridge University(1949 Graduation, First class)
Thanks in Advance.
Regards,
Balakrishna

Answer 1

maybe this example might help.
SQL> select trim(replace(decode(c.semicolon_pos,0,substr(c.str,decode(c.lg,0,1,c.lg)),substr(c.str,decode(c.lg,0,1,c.lg),(c.semicolon_pos - c.lg))),';',null)) single_string
  2    from (select b.rn, b.str, b.semicolon_cnt, b.semicolon_pos,
  3                 nvl(lag(b.semicolon_pos) over (order by b.rn, b.str),0) lg
  4            from (select rownum rn, a.str, a.semicolon_cnt,
  5                         instr(a.str,';',1,rownum) semicolon_pos
  6                    from (select vt.str,
  7                                 (length(vt.str) - length(replace(vt.str, ';'))) semicolon_cnt
  8                            from (select '1 London University; Harvard University(1947, Masters, Distinction); Stanford University(1948, Masters, Distinction); Cambridge University(1949, Graduation, First class)' str from dual) vt) a
  9                  connect by level <= a.semicolon_cnt+1) b) c;
SINGLE_STRING
1 London University
Harvard University(1947, Masters, Distinction)
Stanford University(1948, Masters, Distinction)
Cambridge University(1949, Graduation, First class)
SQL>