COMBINE ROWS OF ONE TABLE

  • I have a table with obj_id (key) and MATRIX_CAT (LOC1 or LOC2) and MX_VALUE (location of asset). Curiously, one asset can have more than one location. How can I with TSQL, combine in one query the obj_id, both locations if they exist and the names? Thanks.

    OBJ_ID MATRIX_CAT MX_VALUE

    7782 LOC1 BOARDROOM

    7782 LOC2 WIL

    7783 LOC1 STEVE'S OFFICE

    I want:

    7782, LOC1, BOARDROOM, LOC2, WIL

    7783, LOC1, WIL, LOC2, ''

  • It ain't pretty, but it's a start. This will run faster than doing it with a cursor or a while loop.

    You'll probably need to create another cte with the distinct values of the location column and join it in

    to get your desired result of 7783,Loc1,Steve's Office,Loc2,''. If you need help with that, just holler.

    Have a good weekend.

    ---------------------------------------------------------------------------------------------------------------

    declare @tbl table (rownum int identity(1,1), objid int,matrix_cat varchar(10), mx_value varchar(20), work varchar(1000))

    declare @work varchar(1000)

    set @work = ''

    insert into @tbl

    select 7782,'LOC1','BOARDROOM',''

    union all

    select 7783,'LOC1','STEVE''S OFFICE',''

    union all

    select 7782,'LOC2','WIL',''

    order by 1,2

    ;with cteprevious as

    (select * from @tbl)

    update @tbl

    set @work = work = case

    when t.objid= isnull(c.objid,'') then @work+', '+t.matrix_cat+', '+t.mx_value

    else t.matrix_cat+', '+t.mx_value

    end

    from @tbl t

    left join ctePrevious c on c.rownum = t.rownum-1 and c.objid = t.objid

    select cast(objid as varchar(10))+', '+max(work) as result

    from @tbl

    group by objid

    __________________________________________________

    Against stupidity the gods themselves contend in vain. -- Friedrich Schiller
    Stop, children, what's that sound? Everybody look what's going down. -- Stephen Stills

  • He double posted.

    http://qa.sqlservercentral.com/Forums/Topic584195-338-1.aspx

    Seth Phelabaum


    Consistency is only a virtue if you're not a screwup. 😉

    Links: How to Post Sample Data[/url] :: Running Totals[/url] :: Tally Table[/url] :: Cross Tabs/Pivots[/url] :: String Concatenation[/url]

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