Playing With SQL Quries

Do you want to play with SQL queries, what a disgusting question, no this is not disgusting, yes you can play, even create games using various codes. Lets create a query to create a triangle. Below SQL query is prepare in Oracle SQL, it can clear your logical skills and usage of SQL function at right place and at right time.

SQL> select lpad(' ',8-level, ' ') ||rpad('*',level-2, '*')
  2  || rpad('*',level-1, '*')
  3   as  a
  4  from dual connect by level < 8
  5  order by level
  6  /

A
---------------

      *
     ***
    *****
   *******
  *********
 ***********

7 rows selected.