Using sql type with cursor in plsql block

Question

I wanted to bulk collect columns in a table into a sqltype .I cannot use plsql type here since I am using it with table function in a merge statement.
Sample code is like this
create type t_type as object(empno number);
create type tab_type as table of t_type;
1 declare
2  t1 tab_type;
3 begin
4  select empno bulk collect into t1 from emp;
5 end;
/I get an error like
ERROR at line 4:
ORA-06550: line 4, column 8:
PL/SQL: ORA-00932: inconsistent datatypes: expected UDT got NUMBER
ORA-06550: line 4, column 1:
PL/SQL: SQL Statement ignored
Pls suggest some alternative

Answer 1

Hi,
You cannot bulk collect into a table of objects like this.
Are you going to use some DML operations on this SQL collections. If yes then you need SQL collections and objects. Otherwise simple PL/SQL objects and collections will do.
Anyway, to give an alternative.
This is one way of doing things;
create table emp(emp_no number(10),emp_name varchar2(100));
INSERT INTO EMP ( EMP_NO, EMP_NAME ) VALUES (
1, 'A');
INSERT INTO EMP ( EMP_NO, EMP_NAME ) VALUES (
2, 'B');
INSERT INTO EMP ( EMP_NO, EMP_NAME ) VALUES (
3, 'C');
commit;
create type t_type as object(empno number(10),empname varchar2(100));
create type n_type as table of number(10);
create type v_type as table of varchar2(100);
create type tab_type as table of t_type;
declare
t1 tab_type := tab_type();
t2 n_type := n_type();
t3 v_type := v_type();
begin
select emp_no,emp_name bulk collect into t2,t3 from emp;
t1.extend(t2.count);
for cnt in t2.first..t2.last
loop
t1(cnt):=t_type(t2(cnt),t3(cnt));
end loop;
for cnt in t1.first..t1.last
loop
dbms_output.put_line(t1(cnt).empno||'---'||t1(cnt).empname);
end loop;
end;
Now if you do not require the DML operations then you can do the following;
declare
type n_type is table of number(10);
type v_type is table of varchar2(100);
type rec_type is record(empno n_type,empname v_type);
t1 rec_type;
begin
select emp_no,emp_name bulk collect into t1.empno,t1.empname from emp;
for cnt in t1.empno.first..t1.empno.last
loop
dbms_output.put_line(t1.empno(cnt)||'---'||t1.empname(cnt));
end loop;
end;
regards,
Dipankar.