How to execute table stored query using stored procedure - sql

Question

I have following table structure.
CREATE TABLE "DADMIN"."DATATEMPLATES"
(
"ID" VARCHAR2(100 BYTE),
"QUERY" CLOB,
"ACTIVESTATUS" VARCHAR2(2 BYTE),
)
I'm storing query data like this SELECT CD.CIF , CD.CREDIT_ACCOUNT FROM CUTOMERDATA CD WHERE ID = :PARA_ID
Currently I'm executing it through the C# raw sql execution
Instead of that, I need to execute the table query through the stored procedure. How can I execute table stored query using SP? and return its data using cursor output?
Update:
This is my sample SP,
PROCEDURE Get_customer_data (p_Query_id IN VARCHAR2,
p_cursor OUT OUTPUTCURSOR)
IS
BEGIN
DECLARE
l_query CLOB;
BEGIN
SELECT query
INTO l_query
FROM querytemplates
WHERE id = p_Query_id ;
OPEN p_cursor FOR l_query;
END;
END;
But this makes error
ORA-06512: at line 1
01008. 00000 - "not all variables bound"
And my other problem is, the table stored query also excepting parameter called PARA_ID how can I pass that.
sample table stored query as follows,
SELECT CD.CIF , CD.CREDIT_ACCOUNT FROM CUTOMERDATA CD WHERE ID = :PARA_ID

Answer 1

One option is to return refcursor. Here's an example.
Sample data (that stores queries):
SQL> SELECT * FROM datatemplates;
ID QUERY A
---------- ------------------------------------------------------------ -
1 select deptno, dname from dept A
2 select d.dname, e.ename, e.job, e.sal from emp e join dept d A
on d.deptno = e.deptno
SQL>
Procedure - based on passed ID parameter - selects appropriate query and opens a refcursor based on that select statement:
SQL> CREATE OR REPLACE FUNCTION f_test (par_id IN NUMBER)
2 RETURN SYS_REFCURSOR
3 IS
4 l_query CLOB;
5 l_rc SYS_REFCURSOR;
6 BEGIN
7 SELECT query
8 INTO l_query
9 FROM datatemplates
10 WHERE id = par_id;
11
12 OPEN l_rc FOR l_query;
13
14 RETURN l_rc;
15 END;
16 /
Function created.
Testing:
SQL> SELECT f_test (1) FROM DUAL;
F_TEST(1)
--------------------
CURSOR STATEMENT : 1
CURSOR STATEMENT : 1
DEPTNO DNAME
---------- --------------
10 ACCOUNTING
20 RESEARCH
30 SALES
40 OPERATIONS
Some more testing:
SQL> SELECT f_test (2) FROM DUAL;
F_TEST(2)
--------------------
CURSOR STATEMENT : 1
CURSOR STATEMENT : 1
DNAME ENAME JOB SAL
-------------- ---------- --------- ----------
ACCOUNTING CLARK MANAGER 2450
ACCOUNTING KING PRESIDENT 5000
ACCOUNTING MILLER CLERK 1300
RESEARCH JONES MANAGER 2975
RESEARCH FORD ANALYST 3000
RESEARCH ADAMS CLERK 1100
RESEARCH SMITH CLERK 800
RESEARCH SCOTT ANALYST 3000
SALES WARD SALESMAN 1250
SALES TURNER SALESMAN 1500
SALES ALLEN SALESMAN 1600
SALES JAMES CLERK 950
SALES BLAKE MANAGER 2850
SALES MARTIN SALESMAN 1250
14 rows selected.
SQL>