mssql - while문을 이용한 구구단

-----------구구단 전체--------------
Declare 
@a		int, 
@b		int, 
@99dan	int

SET @b	= 2
SET @99dan = 2

Print '구구단 시작'

While @99dan < 10
Begin
	set @a = 1

	while @a < 10
	begin
		print str(@b) + ' x ' + str(@a) + ' = ' + str(@b*@a)
		set @a = @a + 1
	end

	print ''
	SET @99dan = @99dan + 1
	SET @b = @b + 1
End 

Print '구구단 끝'