Which Is Faster?

Jul 20, 2005

I'm sonewhat new to MS SQL Server and I'm wondering about which of the
following two queries would be faster:

DECLARE @ResidencesBuilt int
DECLARE @BarracksBuilt int
DECLARE @AirBaysBuilt int
DECLARE @NuclearPlantsBuilt int
DECLARE @FusionPlantsBuilt int
DECLARE @StarMinesBuilt int
DECLARE @TrainingCampsBuilt int
DECLARE @FactoriesBuilt int
SELECT
@ResidencesBuilt = SUM(CASE WHEN BuildingType = 0 THEN Built END),
@BarracksBuilt = SUM(CASE WHEN BuildingType = 1 THEN Built END),
@AirBaysBuilt = SUM(CASE WHEN BuildingType = 2 THEN Built END),
@NuclearPlantsBuilt = SUM(CASE WHEN BuildingType = 3 THEN Built END),
@FusionPlantsBuilt = SUM(CASE WHEN BuildingType = 4 THEN Built END),
@StarMinesBuilt = SUM(CASE WHEN BuildingType = 5 THEN Built END),
@TrainingCampsBuilt = SUM(CASE WHEN BuildingType = 6 THEN Built END),
@FactoriesBuilt = SUM(CASE WHEN BuildingType = 7 THEN Built END)
FROM Buildings
GROUP BY kdID
HAVING kdID = 2902

Or:

DECLARE @ResidencesBuilt int
DECLARE @BarracksBuilt int
DECLARE @AirBaysBuilt int
DECLARE @NuclearPlantsBuilt int
DECLARE @FusionPlantsBuilt int
DECLARE @StarMinesBuilt int
DECLARE @TrainingCampsBuilt int
DECLARE @FactoriesBuilt int
SET @ResidencesBuilt = (SELECT Built FROM Buildings WHERE BuildingType = 0
AND kdID = 2902)
SET @BarracksBuilt = (SELECT Built FROM Buildings WHERE BuildingType = 1 AND
kdID = 2902)
SET @AirBaysBuilt = (SELECT Built FROM Buildings WHERE BuildingType = 2 AND
kdID = 2902)
SET @NuclearPlantsBuilt = (SELECT Built FROM Buildings WHERE BuildingType =
3 AND kdID = 2902)
SET @FusionPlantsBuilt = (SELECT Built FROM Buildings WHERE BuildingType = 4
AND kdID = 2902)
SET @StarMinesBuilt = (SELECT Built FROM Buildings WHERE BuildingType = 5
AND kdID = 2902)
SET @TrainingCampsBuilt = (SELECT Built FROM Buildings WHERE BuildingType =
6 AND kdID = 2902)
SET @FactoriesBuilt = (SELECT Built FROM Buildings WHERE BuildingType = 7
AND kdID = 2902)

The data source is:

kdID BuildingType Built
2902 6 0
2902 7 0
2902 4 0
2902 0 80
2902 2 0
2902 1 5
2902 3 40
2902 5 10

Or:

CREATE TABLE [dbo].[Buildings] (
[kdID] [int],
[BuildingType] [tinyint],
[Built] [int]
)

INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 0, 80)
INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 1, 5)
INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 2, 0)
INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 3, 40)
INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 4, 0)
INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 5, 10)
INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 6, 0)
INSERT INTO Buildings (kdID, BuildingType, Built) VALUES (2902, 7, 0)

Analyzer says the first would be faster, but it has a lot of SUM()'s and
whatnot so I'm not too sure about this. There are also about 1000 rows in
the actual Buildings table. This will be a part of a stored procedure.

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USE [TNS]

GO

/****** Object: StoredProcedure [dbo].[Unique_Login_IPs] Script Date: 05/07/2007 12:38:52 ******/

SET ANSI_NULLS ON

GO

SET QUOTED_IDENTIFIER ON

GO

-- =============================================

-- Author: <Author,,Name>

-- Create date: <Create Date,,>

-- Description: <Description,,>

-- =============================================

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(

@year1 int,

@year2 int

)

AS

BEGIN

SET NOCOUNT OFF;



-- Define the years for testing purposes

set @year1 = 2006

set @year2 = 2007



SELECT month,[2006] as y2006,[2007] as y2007

FROM

(

SELECT @year1 AS year, 1 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 1)) as tmpy1_1

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FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 2)) as tmpy1_2

UNION

SELECT @year1 AS year, 3 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 3)) as tmpy1_3

UNION

SELECT @year1 AS year, 4 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 4)) as tmpy1_4

UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 5)) as tmpy1_5

UNION

SELECT @year1 AS year, 6 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 6)) as tmpy1_6

UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 7)) as tmpy1_7

UNION

SELECT @year1 AS year, 8 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 8)) as tmpy1_8

UNION

SELECT @year1 AS year, 9 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 9)) as tmpy1_9

UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 10)) as tmpy1_10

UNION

SELECT @year1 AS year, 11 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 11)) as tmpy1_11

UNION

SELECT @year1 AS year, 12 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year1) AND (MONTH(logged) = 12)) as tmpy1_12

UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 1)) as tmpy1_1

UNION

SELECT @year2 AS year, 2 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 2)) as tmpy2_2

UNION

SELECT @year2 AS year, 3 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 3)) as tmpy2_3

UNION

SELECT @year2 AS year, 4 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 4)) as tmpy2_4

UNION

SELECT @year2 AS year, 5 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 5)) as tmpy2_5

UNION

SELECT @year2 AS year, 6 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 6)) as tmpy2_6

UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 7)) as tmpy2_7

UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 8)) as tmpy2_8

UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog

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UNION

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FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 10)) as tmpy2_10

UNION

SELECT @year2 AS year, 11 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 11)) as tmpy2_11

UNION

SELECT @year2 AS year, 12 AS month, COUNT(*) AS cnt

FROM (SELECT DISTINCT ipaddress

FROM servicelog AS servicelog_1

WHERE (method = 'LOGIN') AND (YEAR(logged) = @year2) AND (MONTH(logged) = 12)) as tmpy2_12

) piv

PIVOT

(

SUM(cnt)

FOR year IN

([2006],[2007])

) as child

END

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Code:


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