how to use limit in sql code example

Example 1: sql limit results

-- MySql
SELECT * FROM emp ORDER BY sal DESC LIMIT 5;	
-- SQL Server 
SELECT TOP 5 * FROM emp ORDER BY sal DESC;	
-- Oracle < 11g 
SELECT * FROM ( SELECT * FROM emp ORDER BY sal DESC ) WHERE ROWNUM <= 5;
-- Oracle 12c +
SELECT * FROM emp ORDER BY sal DESC FETCH FIRST 5 ROWS ONLY;

Example 2: How to display top 50 rows?

In MySQL, top 50 rows are displayed by using this following query:
SELECT * FROM
LIMIT 0, 50;