立即执行期间的报价问题

Question

获取立即执行的语法错误

select distinct hire_date BULK COLLECT into v_yr from employees;
 
 for i in 1..v_yr.count LOOP
 

   
 v_1:='select * from employees where EXTRACT(YEAR FROM TO_DATE(HIRE_DATE,'''
    ||DD-MM-RR
||'''
||'=:1';

     open c_emp for v_1 using v_yr(i);

Answer 1

也许是这个？

select distinct extract(year from hire_date)
  bulk collect into v_yr
  from employees;
 
for i in 1..v_yr.count loop

   for c_emp in (select *
                   from employees
                  where extract(year from hire_date) = v_yr(i)) loop
.
.
.
   end loop;

end for;