It works if you alias the id, then it's just a normal GROUP BY on the first column (1) to get the sums

SELECT
   CASE WHEN num <= @row_limit THEN queue_name ELSE 'others' END name,
   num, queue_name, jobs_pend, jobs_run
FROM
  (
  SELECT
    @row_num := @row_num + 1 as num,
    queue_name, jobs_pend, jobs_run
  FROM
    queues, (SELECT @row_num := 0, @row_limit:=5) r
  ) q

[download]

gives

name          num   queue_name    jobs_pend jobs_run
adice_long     1    adice_long       5        39
adice_ncsim    2    adice_ncsim      0         6
adice_short    3    adice_short    254       192
calibre        4    calibre          0         0
dsp_ncsim_gls  5    dsp_ncsim_gls    0         2
others         6    dsp_ncsim_hp     0         2
others         7    dsp_ncsim_lp     0         5
others         8    dsp_ncsim_mp     0         5
others         9    hcg_ncsim_comp   0         0
others         10   hcg_ncsim_hp     0         9
others         11   hcg_ncsim_lp     0         0
others         12   hcg_ncsim_mp     0         0
others         13   hcg_ncsim_short  0         0
others         14   ipdc_pte         0         0
others         15   ncsim_long      41        78
others         16   ncsim_lp         1         4
others         17   ncsim_short      0        84
others         18   normal         170        30
others         19   spectreRF        0         1
others         20   vcs              0         0

[download]
poj

In reply to Re^9: How to add columns with new row name using perl from mysql query? by poj
in thread How to add columns with new row name using perl from mysql query? by perlanswers

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