DECLARE @Test TABLE (val int)

INSERT INTO @test VALUES (1)
INSERT INTO @test VALUES (2)
INSERT INTO @test VALUES (3)
INSERT INTO @test VALUES (4)
INSERT INTO @test VALUES (5)

SELECT 
  POWER(10., SUM(LOG10(val)))
 FROM @Test 

We walk in the dark places no others will enter
We stand on the bridge and no one may pass