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how to calculate percentage on based on column values

  • December 7, 2015 at 2:52 am

    #399434

    Hi

    Please tell how to calculate percentage based on column values. Below is my table

    PlayerId Query1 Query2 Query3 Query4 Query5 Query6 Query7 Query8 Query9

    1 A A C B B B A C D

    2 B A C A C A A B B

    3 A B B B A B B C A

    4 C B A C A B A C C

    5 B C A B C A B A A

    6 B A B A B C B A B

    7 A A C C B A C B C

    Result should like below table

    Query A% B% C% D%

    Query1 43 43 14 0

    Query2 57 29 14 0

    --chalam

  • December 7, 2015 at 5:48 am

    #1844344

    -- Set up sample data

    WITH Sampledata AS (

    SELECT *

    FROM (VALUES

    (1, 'A', 'A', 'C', 'B', 'B', 'B', 'A', 'C', 'D'),

    (2, 'B', 'A', 'C', 'A', 'C', 'A', 'A', 'B', 'B'),

    (3, 'A', 'B', 'B', 'B', 'A', 'B', 'B', 'C', 'A'),

    (4, 'C', 'B', 'A', 'C', 'A', 'B', 'A', 'C', 'C'),

    (5, 'B', 'C', 'A', 'B', 'C', 'A', 'B', 'A', 'A'),

    (6, 'B', 'A', 'B', 'A', 'B', 'C', 'B', 'A', 'B'),

    (7, 'A', 'A', 'C', 'C', 'B', 'A', 'C', 'B', 'C')

    ) d (PlayerId, Query1, Query2, Query3, Query4, Query5, Query6, Query7, Query8, Query9)

    )

    SELECT *

    INTO #Sampledata

    FROM Sampledata;

    -- Solution

    SELECT

    x.[Query],

    [A] = CAST(ROUND(SUM(CASE WHEN x.value = 'A' THEN 100.0 ELSE 0 END)/SUM(1),0) AS INT),

    = CAST(ROUND(SUM(CASE WHEN x.value = 'B' THEN 100.0 ELSE 0 END)/SUM(1),0) AS INT),

    [C] = CAST(ROUND(SUM(CASE WHEN x.value = 'C' THEN 100.0 ELSE 0 END)/SUM(1),0) AS INT),

    [D] = CAST(ROUND(SUM(CASE WHEN x.value = 'D' THEN 100.0 ELSE 0 END)/SUM(1),0) AS INT)

    FROM #Sampledata

    CROSS APPLY (

    VALUES

    ('Query1', Query1),

    ('Query2', Query2),

    ('Query3', Query3),

    ('Query4', Query4),

    ('Query5', Query5),

    ('Query6', Query6),

    ('Query7', Query7),

    ('Query8', Query8),

    ('Query9', Query9)

    ) x ([Query], value)

    GROUP BY x.[Query]

    ORDER BY x.[Query]

    See http://qa.sqlservercentral.com/articles/CROSS+APPLY+VALUES+UNPIVOT/91234/[/url]

    and http://qa.sqlservercentral.com/articles/T-SQL/63681/

    [/url]

    “Write the query the simplest way. If through testing it becomes clear that the performance is inadequate, consider alternative query forms.” - Gail Shaw

    For fast, accurate and documented assistance in answering your questions, please read this article.
    Understanding and using APPLY, (I) and (II) Paul White
    Hidden RBAR: Triangular Joins / The "Numbers" or "Tally" Table: What it is and how it replaces a loop Jeff Moden

  • December 7, 2015 at 6:09 am

    #1844346

    Hi chrism,

    Thanks a lot.

    --chalam

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