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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

    PlayerIdQuery1Query2Query3Query4Query5Query6Query7Query8Query9

    1AACBBBACD

    2BACACAABB

    3ABBBABBCA

    4CBACABACC

    5BCABCABAA

    6BABABCBAB

    7AACCBACBC

    Result should like below table

    QueryA%B%C%D%

    Query14343140

    Query25729140

    --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://www.sqlservercentral.com/articles/CROSS+APPLY+VALUES+UNPIVOT/91234/[/url]

    and http://www.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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