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How do you retrieve the last N records from a table?
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Answer Posted / eshwer
Nani is currect....
We can also write the following quere
observe the querey
SQL> select * from emp;
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO
---------- ---------- --------- ---------- --------- ---------- ---------- ----------
7369 SMITH CLERK 7902 17-DEC-80 800 20
7499 ALLEN SALESMAN 7698 20-FEB-81 1600 300 30
7521 WARD SALESMAN 7698 22-FEB-81 1250 500 30
7566 JONES MANAGER 7839 02-APR-81 2975 20
7654 MARTIN SALESMAN 7698 28-SEP-81 1250 1400 30
7698 BLAKE MANAGER 7839 01-MAY-81 2850 30
7782 CLARK MANAGER 7839 09-JUN-81 2450 10
7788 SCOTT ANALYST 7566 19-APR-87 3000 20
7839 KING PRESIDENT 17-NOV-81 5000 10
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30
7876 ADAMS CLERK 7788 23-MAY-87 1100 20
7900 JAMES CLERK 7698 03-DEC-81 950 30
7902 FORD ANALYST 7566 03-DEC-81 3000 20
7934 MILLER CLERK 7782 23-JAN-82 1300 10
14 rows selected.
SQL> SELECT * FROM(SELECT EMP.*,ROWNUM R FROM EMP) WHERE R>(SELECT COUNT(*) -&N FROM EMP);
Enter value for n: 5
old 1: SELECT * FROM(SELECT EMP.*,ROWNUM R FROM EMP) WHERE R>(SELECT COUNT(*) -&N FROM EMP)
new 1: SELECT * FROM(SELECT EMP.*,ROWNUM R FROM EMP) WHERE R>(SELECT COUNT(*) -5 FROM EMP)
EMPNO ENAME JOB MGR HIREDATE SAL COMM DEPTNO R
---------- ---------- --------- ---------- --------- ---------- ---------- ---------- ----------
7844 TURNER SALESMAN 7698 08-SEP-81 1500 0 30 10
7876 ADAMS CLERK 7788 23-MAY-87 1100 20 11
7900 JAMES CLERK 7698 03-DEC-81 950 30 12
7902 FORD ANALYST 7566 03-DEC-81 3000 20 13
7934 MILLER CLERK 7782 23-JAN-82 1300 10 14
SQL>
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