SQL Christmas Tree using SQL server Spatial data
SQL is an amazing tool, if we know to use it the right way. Using the concept of the SQL server spatial data and some mathematics, I have built this Christmas tree the SQL way!!. Attached is the image of the output. The code is as below. You too can run the code for yourself and generate the tree.
Note: After Executing the code, to see the image, Click on the “Spatial results” tab below in the results window, Uncheck the ‘Show Grid lines’ box in the right pane. You will be able to see the image.
Happy learning!!
Varun Shekhar
USE tempdb
GO
— Create a table
CREATE TABLE #xmasTREE (shape GEOMETRY )
–Creating the Christmas tree with stars
INSERT INTO #xmasTREE
VALUES
(‘POLYGON((4 0, 0 0, 4 2, 1 2, 4 4, 1 4, 4 6, 2 6, 5 10, 8 6, 6 6, 9 4, 6 4, 9 2, 6 2, 10 0, 4 0))’ ),
(‘POLYGON((3.5 0, 4 -1, 6 -1, 6.5 0, 3.5 0))’ ),
(‘POLYGON((5 9.5, 4.5 9.25, 4.6 9.9, 4.1 10.2, 4.8 10.2, 5 10.9, 5.2 10.2, 5.9 10.2, 5.4 9.9, 5.5 9.25, 5 9.5))’ ),
(‘POLYGON((2 5.5, 1.5 5.25, 1.6 5.9, 1.1 6.2, 1.8 6.2, 2 6.9, 2.2 6.2, 2.9 6.2, 2.4 5.9, 2.5 5.25, 2 5.5))’ ),
(‘POLYGON((8 5.5, 7.5 5.25, 7.6 5.9, 7.1 6.2, 7.8 6.2, 8 6.9, 8.2 6.2, 8.9 6.2, 8.4 5.9, 8.5 5.25, 8 5.5))’ ),
(‘POLYGON((1 3.5, 0.5 3.25, 0.6 3.9, 0.1 4.2, 0.8 4.2, 1 4.9, 1.2 4.2, 1.9 4.2, 1.4 3.9, 1.5 3.25, 1 3.5))’ ),
(‘POLYGON((9 3.5, 8.5 3.25, 8.6 3.9, 8.1 4.2, 8.8 4.2, 9 4.9, 9.2 4.2, 9.9 4.2, 9.4 3.9, 9.5 3.25, 9 3.5))’ ), (‘POLYGON((1 1.5, 0.5 1.25, 0.6 1.9, 0.1 2.2, 0.8 2.2, 1 2.9, 1.2 2.2, 1.9 2.2, 1.4 1.9, 1.5 1.25, 1 1.5))’ ), (‘POLYGON((9 1.5, 8.5 1.25, 8.6 1.9, 8.1 2.2, 8.8 2.2, 9 2.9, 9.2 2.2, 9.9 2.2, 9.4 1.9, 9.5 1.25, 9 1.5))’ ),
(‘POLYGON((0 -0.5, -0.5 -0.75, -0.4 -0.1, -0.9 0.2, -0.2 0.2, 0 0.9, 0.2 0.2, 0.9 0.2, 0.4 -0.1, 0.5 -0.75, 0 -0.5))’ ),
(‘POLYGON((10 -0.5, 9.5 -0.75, 9.6 -0.1, 9.1 0.2, 9.8 0.2, 10 0.9, 10.2 0.2, 10.9 0.2, 10.4 -0.1, 10.5 -0.75, 10 -0.5))’ ),
(‘POLYGON((5 -2, 4.5 -2, 4.5 -1, 5 -1, 5.5 -1, 5.5 -2, 5 -2))’)
–Create the “Merry Christmas” greetings
INSERT INTO #xmasTREE
VALUES (‘POLYGON((-2 11, -2 12, -1.75 12, -1.5 11.5, -1.25 12, -1 12, -1 11, -1.25 11, -1.25 11.7, -1.5 11.2, -1.75 11.7, -1.75 11, -2 11))’ ),–M
(‘POLYGON((-1 11, -1 12, 0 12, 0 11.8, -0.75 11.8, -0.75 11.6, -0.25 11.6, -0.25 11.4, -0.75 11.4, -0.75 11.2, 0 11.2, 0 11, -1 11))’ ),–E
(‘POLYGON((0 11, 0 12, 1 12, 1 11.5, 0.4 11.5, 1 11, 0.7 11, 0.2 11.4, 0.2 11, 0 11),(0.2 11.8, 0.8 11.8, 0.8 11.7, 0.2 11.7, 0.2 11.8))’ ),–R
(‘POLYGON((1 11, 1 12, 2 12, 2 11.5, 1.4 11.5, 2 11, 1.7 11, 1.2 11.4, 1.2 11, 1 11),(1.2 11.8, 1.8 11.8, 1.8 11.7, 1.2 11.7, 1.2 11.8))’ ),–R
(‘POLYGON((2 12, 2.2 12, 2.5 11.6, 2.8 12, 3 12, 2.6 11.5, 2.6 11, 2.4 11, 2.4 11.5, 2 12))’ ), –Y
(‘POLYGON((4 11, 4 12, 5 12, 5 11.8, 4.25 11.8, 4.25 11.2, 5 11.2, 5 11, 4 11))’ ),–C
(‘POLYGON((5 11, 5 12, 5.2 12, 5.2 11.6, 5.8 11.6, 5.8 12, 6 12, 6 11, 5.8 11, 5.8 11.4, 5.2 11.4, 5.2 11, 5 11))’ ),–H
(‘POLYGON((6 11, 6 12, 7 12, 7 11.5, 6.4 11.5, 7 11, 6.7 11, 6.2 11.4, 6.2 11, 6 11),(6.2 11.8, 6.8 11.8, 6.8 11.7, 6.2 11.7, 6.2 11.8))’ ),–R
(‘POLYGON((7.2 11, 7.2 11.2, 7.4 11.2, 7.4 11.8, 7.2 11.8, 7.2 12, 7.8 12, 7.8 11.8, 7.6 11.8, 7.6 11.2, 7.8 11.2, 7.8 11, 7.2 11))’ ),–I
(‘POLYGON((8 11, 8 11.2, 8.8 11.2, 8.8 11.4, 8 11.4, 8 12, 9 12, 9 11.8, 8.2 11.8, 8.2 11.6, 9 11.6, 9 11, 8 11))’ ),–S
(‘POLYGON((9 11.8, 9 12, 10 12, 10 11.8, 9.6 11.8, 9.6 11, 9.4 11, 9.4 11.8, 9 11.8))’ ),–T
(‘POLYGON((10 11, 10 12, 10.25 12, 10.5 11.5, 10.75 12, 11 12, 11 11, 10.75 11, 10.75 11.7, 10.5 11.2, 10.25 11.7, 10.25 11, 10 11))’ ),–M
(‘POLYGON((11 11, 11 12, 12 12, 12 11, 11.75 11, 11.75 11.3, 11.25 11.3, 11.25 11, 11 11),(11.25 11.5, 11.25 11.8, 11.75 11.8, 11.75 11.5, 11.25 11.5))’ ),–A
(‘POLYGON((12 11, 12 11.2, 12.8 11.2, 12.8 11.4, 12 11.4, 12 12, 13 12, 13 11.8, 12.2 11.8, 12.2 11.6, 13 11.6, 13 11, 12 11))’ )–S
–Decorate the tree with some round bell circles
DECLARE @counter INT = 0
,@x INT
,@y INT ;
WHILE ( @counter < 25 )
BEGIN
INSERT INTO #xmasTREE
VALUES (GEOMETRY::Point(RAND() * 5 + 2.5, RAND() * 8.5, 0).STBuffer(0.3) )
SET @counter+=1 ;
END
Select * from #xmasTREE
Drop table #xmasTREE