ProdigyOne2k
asked on
SQL Statement - comparing 2 results
Table 1 Table 2
AnimalID, COUNT(AnimalID) AnimalID, Count(AnimalID)
Cat 1 Cat 4
Dog 4 Dog 4
Hippo 5 Snake 3
Cow 1 Frog 4
Frog 2 Horse 5
Sheep 1
Pig 3
And I need the resultset to be Table 1 minus Table 2
Cat -3
Dog 0
Hippo 5
Cow 1
Frog -2
Snake -3
Horse -5
Sheep -1
Pig -3
So the first column is an AnimalID, the 2nd is the count of AnimalID. This information would be the result of Table 1 "SELECT AnimalID, COUNT(AnimalID)FROM Farms WHERE FarmID = 89" and Table 2 "SELECT AnimalID, COUNT(AnimalID)FROM Houses WHERE HouseID = 54"
Any ideas? I feel like the answer is easy and I should know how to do this but it's not coming to me, help!
AnimalID, COUNT(AnimalID) AnimalID, Count(AnimalID)
Cat 1 Cat 4
Dog 4 Dog 4
Hippo 5 Snake 3
Cow 1 Frog 4
Frog 2 Horse 5
Sheep 1
Pig 3
And I need the resultset to be Table 1 minus Table 2
Cat -3
Dog 0
Hippo 5
Cow 1
Frog -2
Snake -3
Horse -5
Sheep -1
Pig -3
So the first column is an AnimalID, the 2nd is the count of AnimalID. This information would be the result of Table 1 "SELECT AnimalID, COUNT(AnimalID)FROM Farms WHERE FarmID = 89" and Table 2 "SELECT AnimalID, COUNT(AnimalID)FROM Houses WHERE HouseID = 54"
Any ideas? I feel like the answer is easy and I should know how to do this but it's not coming to me, help!
ASKER CERTIFIED SOLUTION
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ProdigyOne2k - Did you try my solution? Just curious.
Actually, the FULL OUTER JOIN looks like the superior solution, as when I ran both and viewed the SET STATISTICS IO ON, the UNION ALL executed in 115ms, and the FULL OUTER JOIN executed in 4ms.
SET SHOWPLAN_XML OFF
GO
IF EXISTS (SELECT name FROM sys.tables WHERE name='animals1')
DROP TABLE animals1
GO
IF EXISTS (SELECT name FROM sys.tables WHERE name='animals2')
DROP TABLE animals2
GO
CREATE TABLE animals1 (AnimalID varchar(15))
CREATE TABLE animals2 (AnimalID varchar(15))
INSERT INTO animals1 (AnimalID)
VALUES
('Cat'),
('Dog'), ('Dog'), ('Dog'), ('Dog'),
('Hippo'), ('Hippo'), ('Hippo'), ('Hippo'), ('Hippo'),
('Cow'),
('Frog'), ('Frog')
INSERT INTO animals2 (AnimalID)
VALUES
('Cat'), ('Cat'), ('Cat'), ('Cat'),
('Dog'), ('Dog'), ('Dog'), ('Dog'),
('Snake'), ('Snake'), ('Snake'),
('Frog'), ('Frog'), ('Frog'), ('Frog'),
('Horse'), ('Horse'), ('Horse'), ('Horse'), ('Horse'),
('Sheep'),
('Pig'), ('Pig'), ('Pig')
SET STATISTICS TIME ON
SELECT 'UNION'
SELECT AnimalID, SUM(the_count) as total
FROM (
SELECT AnimalID, COUNT(AnimalID) as the_count
FROM animals1
GROUP BY AnimalID
UNION ALL
SELECT AnimalID, COUNT(AnimalID) * -1 as the_count
FROM animals2
GROUP BY AnimalID) t
GROUP BY AnimalID
SELECT 'FULL OUTER JOIN'
SELECT COALESCE(T1.AnimalId,T2.AnimalId) AS AnimalId,
COALESCE(T1.Cnt,0) - COALESCE(T2.Cnt,0) Results
FROM
(SELECT AnimalId, COUNT(AnimalId) Cnt FROM animals1 GROUP BY AnimalId) AS T1
FULL OUTER JOIN
(SELECT AnimalId, COUNT(AnimalId) Cnt FROM animals2 GROUP BY AnimalId) T2
ON T2.AnimalId = T1.AnimalId
GO
ASKER
Hey Jimhorn,,
I did not yet but i will check out your last post and let you know how it goes
Thanks!
I did not yet but i will check out your last post and let you know how it goes
Thanks!
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