How to merge two INDEX BY tables?

CGMS · Feb 23, 2010 1:35AM

Hi All,

Is there any way to merge the two INDEX BY tables?

i tried MULTISET UNION DISTINCT from the below link:
http://www.oracle.com/technology/oramag/oracle/03-sep/o53plsql.html

I got the PLS:00306: wrong number or types of arguments in call to 'MULTISET_UNION_DISTINCT' error.

Code:

declare

TYPE rec_nbrchk IS TABLE OF test.rec_nbr%TYPE
INDEX BY BINARY_INTEGER;

rec_nbr_chk rec_nbrchk;
mlcl_scope_chk rec_nbrchk;
all_chk rec_nbrchk;

begin

all_chk := (rec_nbr_chk )
MULTISET UNION DISTINCT
(scope_chk);
end;

Thanks in advance.

Suresh.

Karthick2003 · Feb 23, 2010 1:44AM

You cant use MULTISET with INDEX BY tables. You must do it with PL/SQL Nested Table Type.

declare
 TYPE rec_nbrchk IS TABLE OF emp.empno%TYPE;

 rec_nbr_chk rec_nbrchk;
 mlcl_scope_chk rec_nbrchk; 
 all_chk rec_nbrchk;
begin
 all_chk := (rec_nbr_chk ) MULTISET UNION DISTINCT (mlcl_scope_chk);
end;

This mentioned in the first line of the document. Please read the content of the below link.

http://download.oracle.com/docs/cd/B19306_01/server.102/b14200/operators006.htm

Twinkle · Feb 23, 2010 1:52AM

Hi,

Check the below link:

Under the header :Type Demos

http://www.psoug.org/reference/type.html

Something like this??

SQL> Declare
  2  TYPE type_rec_emp is table of emp.empno%type;
  3  rec_empno1 type_rec_emp;
  4  rec_empno2 type_rec_emp;
  5  rec_empno3 type_rec_emp;
  6  Begin
  7  rec_empno3 := 
  8   rec_empno1
  9   MULTISET UNION DISTINCT
 10   rec_empno2;
 11  End;
 12  /

PL/SQL procedure successfully completed.

Twinkle

damorgan · Feb 23, 2010 2:02AM

Please do not refer people to the old unsupprted psoug site.

Morgan's Library has been relocated to www.morganslibrary.org with the main library page as www.morganslibrary.org/library.html.

The specific page you refer to is:
http://www.morganslibrary.org/reference/type.html
and has been updated several times since the ancient one was written.

Thank you for updating all of your links to the new site too.

Twinkle: Please use the edit button to update your link to the correct one. Thank you.

CGMS · Feb 23, 2010 2:20AM

Thanks for all of your answers.

But i need to merge the two INDEX BY tables.

is there any any way to do merge between two INDEX BY tables?

Suresh.

Tubby · Feb 23, 2010 2:22AM

Loop through one and append it to the other is about your only option (that i'm aware of).

MichaelS · Feb 23, 2010 2:40AM

declare
   type rec_nbrchk is table of emp.empno%type
                         index by binary_integer;

   rec_nbr_chk      rec_nbrchk;
   mlcl_scope_chk   rec_nbrchk;
   all_chk          rec_nbrchk;
begin
   for i in 1 .. rec_nbr_chk.count
   loop
      all_chk (i) := rec_nbr_chk (i);
   end loop;

   for i in 1 .. mlcl_scope_chk.count
   loop
      all_chk (i + rec_nbr_chk.count) := mlcl_scope_chk (i);
   end loop;
end;

CGMS · Feb 23, 2010 3:38AM

Hi,

The last post is very useful for me.

I want distinct records from these two INDEX BY tables.
Please let me know if there are any way to distinct all_chk INDEX BY table.

Suresh.

CGMS · Feb 23, 2010 3:58AM

Hi all,

i came to conclusion to find the DISTINCT records by following approach:

declare
type rec_nbrchk is table of emp.empno%type
index by binary_integer;

rec_nbr_chk rec_nbrchk;
mlcl_scope_chk rec_nbrchk;
all_chk rec_nbrchk;
chk_flg BOOLEAN;
idx NUMBER;
begin
for i in 1 .. rec_nbr_chk.count
loop
all_chk (i) := rec_nbr_chk (i);
end loop;

for i in 1 .. mlcl_scope_chk.count
loop
chk_flg := true;
idx:= 1;
while idx <= all_chk.count
loop
if all_chk(idx) = mlcl_scope_chk(i) then
chk_flg := false;
exit;
end if;
end loop;
if chk_flg = true then
all_chk (i + rec_nbr_chk.count) := mlcl_scope_chk (i);
end if;
end loop;
end;

is there any other ways to retrieve distinct records from joining of two INDEX BY tables?

Suresh.

MichaelS · Feb 23, 2010 4:38AM

But i need to merge the two INDEX BY tables.

But you could probably use an intermediate associate array?

SQL> select empno
  from emp
 where empno > 7500
/
     EMPNO
----------
      7521
      7566
      7654
      7698
      7782
      7788
      7839
      7844
      7876
      7900
      7902
      7934

12 rows selected.

SQL> select empno
  from emp
 where empno < 7700
/
     EMPNO
----------
      7369
      7499
      7521
      7566
      7654
      7698

6 rows selected.

SQL> declare
   type rec_nbrchk is table of emp.empno%type index by binary_integer;

   type all_chk_tab_tmp is table of emp.empno%type;

   rec_nbr_chk      rec_nbrchk;
   mlcl_scope_chk   rec_nbrchk;
   all_chk          rec_nbrchk;
   all_chk_tmp      all_chk_tab_tmp := all_chk_tab_tmp ();
begin
 /*  Just for demonstration purpose: Fill the arrays with some values */
   select empno
     bulk collect into rec_nbr_chk
     from emp
    where empno > 7500;

   select empno
     bulk collect into mlcl_scope_chk
     from emp
    where empno < 7700;

   for i in 1 .. rec_nbr_chk.count + mlcl_scope_chk.count
   loop
      all_chk_tmp.extend;
      all_chk_tmp (i) :=
         case
            when i <= rec_nbr_chk.count  then rec_nbr_chk (i)
            else mlcl_scope_chk (i - rec_nbr_chk.count )
         end;
   end loop;

   all_chk_tmp := all_chk_tmp multiset union distinct all_chk_tmp;

   for i in 1 .. all_chk_tmp.count
   loop
      all_chk (i) := all_chk_tmp (i);
      dbms_output.put_line( to_char(i,'fm00') || ': ' || all_chk (i));
   end loop;
end;
/
01: 7521
02: 7566
03: 7654
04: 7698
05: 7782
06: 7788
07: 7839
08: 7844
09: 7876
10: 7900
11: 7902
12: 7934
13: 7369
14: 7499
PL/SQL procedure successfully completed.

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