Problems in: FETCH FIRST n PERCENT ROWS ONLY
Wanting to count how many rows in emp table SQL> SELECT COUNT (*) FROM emp; COUNT(*) ---------- 100 Cool... now let me see how much is 5 percent of emp SQL> SELECT COUNT (*) FROM emp 2 FETCH FIRST 5 PERCENT ROWS ONLY; COUNT(*) ---------- 100 Mmmmm.... it can't be also 100 ... somthing is wierd .. Let's try other way SQL> SELECT COUNT (*) 2 FROM ( SELECT empno 3 FROM emp 4 FETCH FIRST 5 PERCENT ROWS ONLY); COUNT(*) ---------- 5 Cool, now it is working :) Now let's try in PL/SQL SQL> DECLARE 2 l_Percent_to_fetch PLS_INTEGER; 3 l_cnt PLS_INTEGER; 4 BEGIN 5 SELECT COUNT (*) 6 INTO l_cnt 7 FROM ( SELECT empno 8 FROM emp 9 FETCH FIRST l_Percent_to_fetch PERCENT ROWS ONLY); 10 END; 11 / DECLARE * ERROR at line 1: ORA-03113: end-of-file on communication channel