Suppose we have a set of data with 5000 records and we need to write a query that helps us every time we are required to fetch 50 Random rows from that table?
How will you do that?
  
Answer: SQL Server and Oracle Random functions.
 
Sql Server:
 
SELECT *  
FROM ID_CityMst  
ORDER BY RAND()  
LIMIT  5 
 
Oracle :
 
SELECT *
FROM
(
SELECT *
FROM id_citymst
ORDER BY
dbms_random.value
)
WHERE rownum <= 6