Question

In the following example I create a VARRAY with 3 items.

TEST@XE> select t1, t2.* from
  2  (select 'X' as t1 from dual UNION select 'Y' from dual) t1,
  3  table (sys.odcivarchar2list('a', 'b', 'c'))             t2;

T1  COLUMN_VALUE
--- --------------------
X   a
X   b
X   c
Y   a
Y   b
Y   c

I’d like to have the following output:

T1  INDEX COLUMN_VALUE
--- ----- --------------------
X   1     a
X   2     b
X   3     c
Y   1     a
Y   2     b
Y   3     c

Note that sys.odcivarchar2list is predefined as VARRAY(32767) OF VARCHAR2(4000);.

Answer 1

 select t1, row_number() over ( partition by t1 order by t1), t2.* from
 (select 'X' as t1 from dual UNION select 'Y' from dual) t1,
 table (sys.odcivarchar2list('a', 'b', 'c'))             t2;