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Thread: Help with SQL Query

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  1. #1
    Join Date
    Nov 2008
    Posts
    1

    Question Help with SQL Query

    Hello all,

    lets say i have a table like this which has 3 columns and 3 rows;

    ----------------------------------------------+
    COLUMN_A.....|.....COLUMN_B.....|...COLUMN_C |
    ......X............|...........X........... |.........X.......|
    ......X............|...........-............|.........X.......|
    ......-............|...........-............|.........X.......|
    ----------------------------------------------+

    So, now i have an input like; (user submits a form)
    ----------------------------------------------+
    ......X............|...........X............|..... ....-.......|
    ----------------------------------------------+

    now; the first column of row#1 is X so it is same as the input. the 2nd column of row#1 is X so it is also same as the input. and obviously third column of row#1 is not "-" so it is different. So, this row's score is "2".

    with same point of view 2nd row's score is "1" (input is matching with COLUMN_A.)

    and finally third row is completely different from input. All columns are differs from input. so its score is "0".

    Finally the question is; how can i build this "scoresheet" with a fast sql query.

    Thanx in advance.

  2. #2
    Join Date
    Nov 2008
    Posts
    3

    Help with SQL Query

    select decode(a||b||c,'xxx','2','x-x','1','0') from ex

    assume ex is a table name

    a,b,c are columns in the table of varchar2 type

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