Concatenate multiple column into single in a resulted query

Question

I need a help in adding multiple column in single (DB2) after a resulted query

My resulted query looks like,

EMPI   HRS  MTS  SDS
-------------------
sam    12   10   10
tukai  10   05   02

Now, I want this output instead:

empid   Totaltimetaken
----------------------
sam     12:10:10
tukai   10:05:02

First query:

SELECT
    empid
    ,TOTALSECONDS/3600 AS HRS
    ,(MOD(TOTALSECONDS, 3600) /60) AS MTS
    ,(MOD(TOTALSECONDS, 60)) AS SDS
FROM 
    (SELECT
        SUM(duration) AS TOTALSECONDS
        ,empid
     FROM table
     GROUP BY empid)

From the above query result, I now want to add the columns: empid, hrs, mts, sds.

I used this query but not getting result. Any help...

SELECT 
    TMP1.emp
    ,('0'||(TOTALSECONDS.TMP1)/3600)||':'||
    ('0'||(MOD(TOTALSECONDS.TMP1),3600)/60) ':'||
    MOD(TOTALSECONDS.TMP1),60) AS TOTALTIMETAKEN
    ,TMP1.TOTALSECONDS
FROM
   (SELECT 
       EMPID emp,
       SUM(DURATION) AS TOTALSECONDS
    FROM table
    GROUP BY EMPID) TMP1

This is for IBM DB2.

Answer 1

You should be using TMP1 as a prefix-

SELECT TMP1.emp, TMP1.TOTALSECONDS,
           ('0' || (TMP1.TOTALSECONDS) / 3600) || ':' ||
           ('0' || (MOD(TMP1.TOTALSECONDS, 3600) / 60) ':' ||
           MOD(TMP1.TOTALSECONDS, 60) AS TOTALTIMETAKEN
FROM (SELECT EMPID emp, SUM(DURATION) AS TOTALSECONDS
      FROM table
      GROUP BY EMPID) TMP1

Answer 2

This should get you on the right track....

Select One, Two
from Table

will result in 2 columns that will look like

|One|   |Two|
  1       2

-

 Select Cast(One as varchar(30)) + '_' + Cast(Two as varchar(30)) as 'Concatenated'
 from Table   

result will look like

|Concatenated|
     1_2

*Note this is for SQL Server