Homework task

-- Original query
SELECT COUNT(*)FROM players
WHERE (bats = "L" AND throws = "R") OR (bats = "R" AND throws = "L");

-- Query that returns a single person more than the original one
-- Student homework: to explore who that player is and why does it return exactly him
-- Students have to send the way they used to find the extra player
SELECT COUNT(*)FROM players
WHERE bats != throws
AND bats != "B" AND throws != "B" AND bats IS NOT NULL and throws IS NOT NULL;