Can we use collection variable as a table in execute immediate? - oracle

Question

Declare
Type t_approved_node is record( node_rowid Hr
node_rowid%type, Node_+type hr.node_type%type);
Type t_val is table of t_approved_node Index by pls_integer;
V_node t_val;
V_tab varchar2(20);
V_col varchar2(400);
V_nrf_flg hr.hr_flag%type;
V_ubrf_flg hr.hr_flag%type := 3;
V_col_str varchar2(4000);
Begin
Begin
Select hr_flag into v_nrf_flg from hr;
End;
Begin
Select h.node_rowid, h.node_type bulk collect into v_node
from hr h, hr_attr_wfm haw
Where h.hr_relation_id = haw.uc_hr_relation_id
And h.node_type = 'UBR';
Begin
V_tab := 'UC_UBR';
Select listagg(column_name, ',' within group(order by
column_id)
Into v_col from user_tab_columns where table_name = v_tab;
End;
V_col_str := regex_replace( v_col, 'HR_FLAG', v_ubrf_flg);
Execute immediate ' insert into ' || v_tab || '( ' ||
V_col || ') ' || ' select '|| v_col_str || ' from ' ||
V_tab || 'R ' || q' [ where node_type = ' UBR' a
and hr_flag =:1 and exists( ] ' || ' select 1 ' || ' from table( ' ||
v_node || ')y' || q' [ where y.node_rowid = R.node_rowid ] )'
Using v_nrf_flag;
End;
End;
I was trying to execute above block getting below error.
Wrong number or types of arguments in call to ||
Final query should be like
insert into UC_UBR ( v_col)/*3 columns into v_col variable*/
select v_col_str /* 3 columns in v_col_str variable*/ from UC_UBR R where hr_flag =:1
and exists
(select 1 from table(v_node) /*collection variable*/ y
where y.node_rowid = r.node_rowod;
Can anyone help on this?

Answer 1

Your sample code is full of errors and does not make any sense at all. But if I focus on your question, then the answer is "yes". See this example:
CREATE OR REPLACE TYPE t_app AS OBJECT( nodeid NUMBER, Nodetype VARCHAR2(100));
CREATE OR REPLACE TYPE t_val IS TABLE OF t_app;
DECLARE
V_node t_val;
V_result t_val;
V_app t_app;
V_count NUMBER;
Sql_stmt VARCHAR2(100);
nodeid NUMBER;
Nodetype VARCHAR2(100);
BEGIN
SELECT t_app(nodeid, Nodetype) BULK COLLECT INTO V_node FROM HR;
Sql_stmt := 'SELECT count(*) FROM TABLE(:t)';
EXECUTE IMMEDIATE Sql_stmt INTO V_count USING V_node;
DBMS_OUTPUT.PUT_LINE ( 'V_count = ' || V_count );
Sql_stmt := 'SELECT nodeid, Nodetype FROM TABLE(:t) WHERE ROWNUM = 1';
EXECUTE IMMEDIATE Sql_stmt INTO nodeid, Nodetype USING V_node;
DBMS_OUTPUT.PUT_LINE ( 'nodeid = ' || nodeid );
DBMS_OUTPUT.PUT_LINE ( 'Nodetype = ' || Nodetype );
Sql_stmt := 'SELECT t_app(nodeid, Nodetype) FROM TABLE(:t) WHERE ROWNUM = 1';
EXECUTE IMMEDIATE Sql_stmt INTO V_app USING V_node;
DBMS_OUTPUT.PUT_LINE ( 'V_app = ' || XMLTYPE(V_app).getClobVal() );
Sql_stmt := 'SELECT t_app(nodeid, Nodetype) FROM TABLE(:t)';
EXECUTE IMMEDIATE Sql_stmt BULK COLLECT INTO V_result USING V_node;
END;

Answer 2

It would help if you posted real code you used, because this is full of syntax errors (missing sql_stmt local variable declaration, put.line (?)).
I have no idea what you plan to do with such a select statement as you can't execute it, it doesn't make any sense but - here you go; see line #20.
SQL> set serveroutput on
SQL>
SQL> DECLARE
2 TYPE t_app IS RECORD
3 (
4 nodeid NUMBER,
5 Nodetype VARCHAR2 (20)
6 );
7
8 TYPE t_val IS TABLE OF t_app
9 INDEX BY PLS_INTEGER;
10
11 V_node t_val;
12 V_tab VARCHAR2 (20);
13
14 sql_stmt VARCHAR2 (200);
15 BEGIN
16 SELECT empno, ename
17 BULK COLLECT INTO v_node
18 FROM emp;
19
20 Sql_stmt := 'select 1 from (' || v_node (1).nodeid || 'Y)';
21
22 DBMS_OUTPUT.put_line (sql_stmt);
23 END;
24 /
select 1 from (7369Y)
PL/SQL procedure successfully completed.
SQL>