Software Applications Programming Errors and solutions.

To use  SQL TOP, RANK,  ROW_NUMBER ,DENSE_RANK Functions  you can see below image. Select top 5 records from table. In below query We used SQL TOP, RANK,  ROW_NUMBER ,DENSE_RANK .You can check this with your table.

SQL> SELECT DEPTNO,SUM(SAL)  2 FROM EMP  3 GROUP BY ROLLUP(DEPTNO)  4 /  DEPTNO SUM(SAL) ---------- ----------  10 8750  20 10875  30 9400  29025 SQL> ED Wrote file afiedt.buf  1 SELECT NVL(TO_CHAR(DEPTNO),'TOTAL'),SUM(SAL)  2 FROM EMP  3* GROUP BY ROLLUP(DEPTNO) SQL> / NVL(TO_CHAR(DEPTNO),'TOTAL') SUM(SAL) ---------------------------------------- ---------- 10 8750 20 10875 30 9400 TOTAL 29025 SQL> ED Wrote file afiedt.buf  1 SELECT NVL(TO_CHAR(DEPTNO),'TOTAL'),SUM(SAL)  2 FROM EMP  3* GROUP BY CUBE(DEPTNO) SQL> / NVL(TO_CHAR(DEPTNO),'TOTAL') SUM(SAL) ---------------------------------------- ---------- TOTAL 29025 10 8750 20 10875 30 9400 SQL> ED Wrote file afiedt.buf  1 SELECT NVL(TO_CHAR(DEPTNO),'TOTAL'),JOB,SUM(SAL)  2 FROM EMP  3* GROUP BY ROLLUP(DEPTNO,JOB) SQL> / NVL(TO_CHAR(DEPTNO),'TOTAL') JOB SUM(SAL) ---------------------------------------- --------- ---------- 10 CLERK 1300 10 MANAGER 2450 10 PR

This is stored procedure which show you rows return as per mention in stored procedure. CREATE PROCEDURE get_categories( IN p_action_flag VARCHAR(50), IN p_firstrow int, IN p_lastrow int) BEGIN IF p_action_flag = 'all' THEN SELECT top 50 u.*, d.name, d.image FROM user u, member gu, detail d WHERE u.user_id = gu.user_id AND u.user_id = d.user_id AND u.status = '1' AND gu.group_id IN (1, 7) GROUP BY u.user_id ORDER BY d.name LIMIT p_firstrow,p_lastrow; ELSEIF p_action_flag = 'Most Viewed' THEN SELECT top 50 u.*, d.name, d.image FROM user u, member gu, detail d WHERE u.user_id = gu.user_id AND u.user_id = d.user_id AND u.status = '1' AND gu.group_id IN (1, 7) GROUP BY u.user_id ORDER BY u.views DESC, d.name ASC LIMIT p_firstrow,p_lastrow ; END IF END