Calling a function which uses dynamic SQL from within an SQL statement. : dbms_sql « System Packages « Oracle PL / SQL






Calling a function which uses dynamic SQL from within an SQL statement.

  
SQL>
SQL> CREATE OR REPLACE FUNCTION DynamicSysdate
  2    RETURN DATE AS
  3
  4    v_SQLStatement VARCHAR2(100) := 'SELECT SYSDATE FROM dual';
  5    v_CursorID INTEGER;
  6    v_ReturnVal DATE;
  7    v_Dummy INTEGER;
  8  BEGIN
  9    v_CursorID := DBMS_SQL.OPEN_CURSOR;
 10    DBMS_SQL.PARSE(v_CursorID, v_SQLStatement, DBMS_SQL.NATIVE);
 11    DBMS_SQL.DEFINE_COLUMN(v_CursorID, 1, v_ReturnVal);
 12    v_Dummy := DBMS_SQL.EXECUTE_AND_FETCH(v_CursorID);
 13    DBMS_SQL.COLUMN_VALUE(v_CursorID, 1, v_ReturnVal);
 14    DBMS_SQL.CLOSE_CURSOR(v_CursorID);
 15    RETURN v_ReturnVal;
 16  EXCEPTION
 17    WHEN OTHERS THEN
 18      DBMS_SQL.CLOSE_CURSOR(v_CursorID);
 19      RAISE;
 20  END DynamicSysdate;
 21  /

Function created.

SQL> show errors
No errors.
SQL>
SQL> SELECT DynamicSysdate FROM dual;

DYNAMICSYSDATE
---------------------
Jun 19, 2008 20:39:02

1 row selected.

SQL>
SQL>

   
  








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