HIVE試圖加入，並從另一個SELECT語句領域

Question

我想加盟無論在ID和playerID和一年yearID（以下模式）這些select語句中減去一個領域。此外減去別名HAB - EG

SELECT playerID, yearID, (E/ G) AS EG FROM fielding 
    WHERE yearID > 2005 AND yearID < 2009 AND G > 20; 


    SELECT id, year, (hits/ab) AS HAB FROM batting 
    WHERE year > 2005 AND year < 2009 AND ab > 40; 

JUST SCHEMA

CREATE EXTERNAL TABLE IF NOT EXISTS fielding 
(playerID STRING ,yearID INT ,teamID STRING ,lgID STRING , 
POS STRING ,G INT ,GS INT , InnOuts INT , PO INT,A INT, E INT, 
DP INT , PB INT , WP INT ,SB INT ,CS INT , ZR INT) ROW 
FORMAT DELIMITED FIELDS TERMINATED BY ',' LOCATION  '/home/hduser/hivetest/fielding'; 

JUST架構

CREATE EXTERNAL TABLE IF NOT EXISTS batting(id STRING, year INT, team STRING, 
league STRING, games INT, ab INT, runs INT, hits INT, doubles INT, triples 
INT, homeruns INT, rbi INT, sb INT, cs INT, walks INT, strikeouts INT, ibb 
INT, hbp INT, sh INT, sf INT, gidp INT) ROW FORMAT DELIMITED FIELDS 
TERMINATED BY ',' LOCATION '/home/hduser/hivetest/batting'; 

Answer 1

試試這個：

SELECT 
    a.playerID AS ID, 
    a.yearID AS yearID, 
    (b.HAB - a.EG) AS HAB-EG 
FROM 
    (SELECT 
     playerID, 
     yearID, 
     (E/G) AS EG 
    FROM fielding 
    WHERE (
      yearID > 2005 
      AND yearID < 2009 
      AND G > 20 
      ) 
    ) AS a 
JOIN 
    (SELECT 
     id, 
     year, 
     (hits/ab) AS HAB 
    FROM batting 
    WHERE( 
      year > 2005 
      AND year < 2009 
      AND ab > 40 
      ) 
    ) AS b ON a.playerID = b.id AND a.yearID = b.year;