在Oracle中执行动态SQL查询

Question

I have a SELECT query in which i will have aa Dynamic WHERE condition. The thing is when I try to concatenate the WHERE condition PARAMETER with the SQL Query its not allowing me to save the PROCEDURE .

eg:

CREATE PROCEDURE usp_MySearchQuery
(
  QTYPE IN INT,
  OUT_CUR OUT SYS_REFCURSOR
)
IS
DYN_QUERY VARCHAR2;
BEGIN
    IF QTYPE=1 THEN
       DYN_QUERY :=' BETWEEN 1 AND 2';
    ELSE
       DYN_QUERY :='=10';    
    END IF;

    OPEN OUT_CUR FOR
         SELECT * FROM MYTABLE WHERE TYPE=QTYPE AND ID || DYN_QUERY;
END;

This is how my procedure looks like. I tried EXECUTE IMMEDIETE but in its documentation itself, its written it wont work for multiple row query.

In MSSQL we have EXEC (not sure) command which can execute the text sent to the command. In the same way do we have any commands which can run the dynamic query in Oracle

---

UPDATE: Answer

---

I tried like this.

  OPEN OUT_CUR FOR
        ' SELECT * FROM MYTABLE WHERE TYPE=:QTYPE AND ID ' || DYN_QUERY
          USING QTYPE;

and it worked

Answer 1

The Dynamic String has to be enclosed within 'Single Quotes'

OPEN OUT_CUR FOR
     'SELECT * FROM MYTABLE WHERE ID '|| DYN_QUERY;

EXECUTE IMMEDIATE allows Multi row result, if you use BULK COLLECT

Example:

DECLARE
  TYPE myarray IS TABLE OF VARCHAR2(100);
  v_array myarray;
BEGIN
  EXECUTE IMMEDIATE 'select ''x'' from dual union all select ''y'' from dual'
    BULK COLLECT INTO v_array;

  --Or you could use the alternative quoting mechanism to avoid doubling quotation marks.
  --EXECUTE IMMEDIATE q'[select 'x' from dual union all select 'y' from dual]'
  --  BULK COLLECT INTO v_array;

  FOR i IN 1..v_array.count
  LOOP
    DBMS_OUTPUT.PUT_LINE(v_array(i));
  END LOOP;
END;

EXECUTE IMMEDIATE using bind variables ;

String := 'SELECT * FROM EMP WHERE name = :name AND age = :age AND :name <> ''Mahesh''';

EXECUTE IMMEDIATE String USING 'Mahi',21,'Mahi';
<OR>
EXECUTE IMMEDIATE String USING proc_variable1,proc_variable2,proc_variable1;