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niisar/Ch6_2.sql

Created May 20, 2014 15:57
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with (allows database to treate query as inline view/temporary table
Raw
Ch6_2.sql
WITH WT_AVG AS
(SELECT AVG(WEIGHT) AS AVG_WT FROM CHILDSTAT
)
SELECT a.FIRSTNAME,
a.GENDER,
a.HEIGHT,
a.WEIGHT
FROM CHILDSTAT a
WHERE a.GENDER = 'm'
AND a.HEIGHT > 50
AND a.WEIGHT <=
(SELECT AVG_WT FROM WT_AVG
)
UNION ALL
SELECT B.FIRSTNAME,
B.GENDER,
B.HEIGHT,
B.WEIGHT
FROM CHILDSTAT B
WHERE B.GENDER = 'f'
AND B.HEIGHT > 40
AND B.WEIGHT <=
(SELECT AVG_WT FROM WT_AVG
)
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