mark the first value of a group
I get the following16:57:28 >r
1 with my_table as
2 (
3 select 'M082012' pera, to_number(10584338) snr, to_number(10) pnr, 'Beule' name, 'Anna' f_name from dual union all
4 select 'M092012' pera, to_number(15965177) snr, to_number(15) pnr, 'Tester' name, 'Toni' f_name from dual union all
5 select 'M082012' pera, to_number(14254501) snr, to_number(20) pnr, 'Wallen' name, 'Monika' f_name from dual union all
6 select 'M082012' pera, to_number(10584339) snr, to_number(10) pnr, 'Beule' name, 'Anna' f_name from dual union all
7 select 'M092012' pera, to_number(15965178) snr, to_number(10) pnr, 'Beule' name, 'Anna' f_name from dual union all
8 select 'M012013' pera, to_number(10674833) snr, to_number(15) pnr, 'Tester' name, 'Toni' f_name from dual union all
9 select 'M012013' pera, to_number(10674834) snr, to_number(15) pnr, 'Tester' name, 'Toni' f_name from dual union all
10 select 'M012013' pera, to_number(10539210) snr, to_number(30) pnr, 'Klose' name, 'Werner' f_name from dual union all
11 select 'M012013' pera, to_number(12345678) snr, to_number(50) pnr, 'Meier' name, 'Otto' f_name from dual union all
12 select 'M012013' pera, to_number(22345789) snr, to_number(50) pnr, 'Meier' name, 'Otto' f_name from dual union all
13 select 'M082012' pera, to_number(10584346) snr, to_number(77) pnr, 'Carl' name, 'Frank' f_name from dual union all
14 select 'M062012' pera, to_number(10550971) snr, to_number(77) pnr, 'Carl' name, 'Frank' f_name from dual union all
15 select 'M092012' pera, to_number(15965185) snr, to_number(77) pnr, 'Carl' name, 'Frank' f_name from dual union all
16 select 'M082012' pera, to_number(10584352) snr, to_number(50) pnr, 'Meier' name, 'Otto' f_name from dual union all
17 select 'M092012' pera, to_number(15965191) snr, to_number(80) pnr, 'Duster' name, 'Hucke' f_name from dual)
18 select case when pera = 'M012013' then '*' end mark,
19 pera, snr, pnr, name, f_name
20 from (
21 select pera, snr, pnr, name, f_name,
22 max(case when pera = 'M012013' then 'Y' end)
23 over(partition by upper(name||f_name)) m_flag,
24 count(*) over(partition by upper(name||f_name)) cnt
25 from my_table
26 )
27 where m_flag = 'Y'
28 and cnt > 1
29* order by 4,5,6, to_number(substr(pera,4,4)||substr(pera,2,2)) desc
MARK PERA SNR PNR NAME F_NAME
----- ------- ---------- ---------- ------ ------
* M012013 10674834 15 Tester Toni
* M012013 10674833 15 Tester Toni
M092012 15965177 15 Tester Toni
* M012013 22345789 50 Meier Otto
* M012013 12345678 50 Meier Otto
M082012 10584352 50 Meier Otto
I would like to mark only the first value in the group with an asterisk as follows.MARK PERA SNR PNR NAME F_NAME
----- ------- ---------- ---------- ------ ------
* M012013 10674834 15 Tester Toni
M012013 10674833 15 Tester Toni
M092012 15965177 15 Tester Toni
* M012013 22345789 50 Meier Otto
M012013 12345678 50 Meier Otto
M082012 10584352 50 Meier Otto
Perhaps this example might be useful for you. the code uses the same code that you published with additional analytical query to return the row grouping for the name, the NRP and columns pera. then use that line number to determine which will be placed at the first mark.
SQL> with my_table as
2 (
3 select 'M082012' pera, to_number(10584338) snr, to_number(10) pnr, 'Beule' name, 'Anna' f_name from dual union all
4 select 'M092012' pera, to_number(15965177) snr, to_number(15) pnr, 'Tester' name, 'Toni' f_name from dual union all
5 select 'M082012' pera, to_number(14254501) snr, to_number(20) pnr, 'Wallen' name, 'Monika' f_name from dual union all
6 select 'M082012' pera, to_number(10584339) snr, to_number(10) pnr, 'Beule' name, 'Anna' f_name from dual union all
7 select 'M092012' pera, to_number(15965178) snr, to_number(10) pnr, 'Beule' name, 'Anna' f_name from dual union all
8 select 'M012013' pera, to_number(10674833) snr, to_number(15) pnr, 'Tester' name, 'Toni' f_name from dual union all
9 select 'M012013' pera, to_number(10674834) snr, to_number(15) pnr, 'Tester' name, 'Toni' f_name from dual union all
10 select 'M012013' pera, to_number(10539210) snr, to_number(30) pnr, 'Klose' name, 'Werner' f_name from dual union all
11 select 'M012013' pera, to_number(12345678) snr, to_number(50) pnr, 'Meier' name, 'Otto' f_name from dual union all
12 select 'M012013' pera, to_number(22345789) snr, to_number(50) pnr, 'Meier' name, 'Otto' f_name from dual union all
13 select 'M082012' pera, to_number(10584346) snr, to_number(77) pnr, 'Carl' name, 'Frank' f_name from dual union all
14 select 'M062012' pera, to_number(10550971) snr, to_number(77) pnr, 'Carl' name, 'Frank' f_name from dual union all
15 select 'M092012' pera, to_number(15965185) snr, to_number(77) pnr, 'Carl' name, 'Frank' f_name from dual union all
16 select 'M082012' pera, to_number(10584352) snr, to_number(50) pnr, 'Meier' name, 'Otto' f_name from dual union all
17 select 'M092012' pera, to_number(15965191) snr, to_number(80) pnr, 'Duster' name, 'Hucke' f_name from dual)
18 select case when pera = 'M012013' and rn = 1 then '*' end mark,
19 pera,
20 snr,
21 pnr,
22 name,
23 f_name
24 from (select pera, snr, pnr, name, f_name,
25 row_number() over (partition by pera, pnr, name, f_name order by pera, pnr, name) rn
26 from (select pera, snr, pnr, name, f_name,
27 max(case when pera = 'M012013' then 'Y' end)
28 over(partition by upper(name||f_name)) m_flag,
29 count(*) over(partition by upper(name||f_name)) cnt
30 from my_table)
31 where m_flag = 'Y'
32 and cnt > 1
33 order by 4,5,6, to_number(substr(pera,4,4)||substr(pera,2,2)) desc)
34 order by 4,5,6, to_number(substr(pera,4,4)||substr(pera,2,2)) desc;
MARK PERA SNR PNR NAME F_NAME
---- ------- ---------- ---------- ------ ------
* M012013 10674834 15 Tester Toni
M012013 10674833 15 Tester Toni
M092012 15965177 15 Tester Toni
* M012013 22345789 50 Meier Otto
M012013 12345678 50 Meier Otto
M082012 10584352 50 Meier Otto
6 rows selected
SQL>
Tags: Database
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