Diamond Shaped Star Pattern by SQL

The challenge is to make a SQL query to draw a Star Pattern in Diamond Shape.
Drawing Star Pattern using SQL is not why Oracle is used but it is always good to try new thing when someone gives you a challenge.

I have written following SQL to draw Above Star Pattern.

SQL> set pages 100

SQL> SELECT LPAD (' ', 10 - LEVEL, ' ')
  2           || LPAD ('*', LEVEL, '*')
  3           || LPAD ('*', LEVEL - 1, '*')
  4         "Star Pattern in Diamond Shape"
  5  FROM DUAL
  6  CONNECT BY LEVEL <= 10
  7  UNION ALL
  8  SELECT LPAD (' ', LEVEL, ' ')
  9           || LPAD ('*', 10 - LEVEL, '*')
 10           || LPAD ('*', 9 - LEVEL, '*')
 11  FROM DUAL
 12  CONNECT BY LEVEL <= 9;
 
Star Pattern in Diamond Shape
------------------------------------------------------------
         *
        ***
       *****
      *******
     *********
    ***********
   *************
  ***************
 *****************
*******************
 *****************
  ***************
   *************
    ***********
     *********
      *******
       *****
        ***
         *

19 rows selected.

Please use comment box to share your SQL Queries which draws Following Star Pattern.


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