PLSQL中 INDEX BY TABLE 的小例子

开始

--INDEX BY Table
SET SERVEROUTPUT ON;

DECLARE
  TYPE enm_tab_type IS TABLE OF
       emp.ename%TYPE
       INDEX BY BINARY_INTEGER;
  
  enm_table enm_tab_type;
BEGIN
  enm_table(1):='ABCD';
  IF enm_table.EXISTS(1) THEN
     dbms_output.put_line( enm_table(1));
  ELSE
     dbms_output.put_line( 'not exists(1)');
  END IF;
END;
/

结束