IS 683

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relational Algebra_ Solutions New Jersey Institute Of Technology IS 683

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1. Select yearid, lgid, teamid, playerid and the number of home runs (HR) from the BATTING table. Π yearid, lgid, teamid, playerid, HR (Batting) 2. Modify the query in #1 so it also shows the number of hits that were for “extra bases” and the batting average (H/AB). The Extra Bases column must be calculated by adding the following columns together (2B, 3B and HR). Rename the derived column Extra Base Hits. Π yearid, lgid, teamid, playerid, HR (ρBatting_Avg/(H/AB) (ρExtra_Bases/(2B...

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IS 683 • IS 683