APPS-ORACLE.RU

PERCENTILE_DISC(expr) WITHIN GROUP
   (ORDER BY expr [ DESC | ASC ])
   [ OVER (query_partition_clause) ]

with t as
(select 1 id, 10 val  from dual
  union all
 select 2 id, 20 val  from dual
  union all
 select 3 id, 30 val  from dual
  union all
 select 4 id, 50 val  from dual
  union all
 select 5 id, 70 val  from dual
)
select  id,
        val,
        cume_dist() over (order by val) "Cume_Dist",
        percentile_disc(0.50) within group (order by val) over() "percentile_disc"
from t
order by val;

        ID        VAL  Cume_Dist percentile_disc
---------- ---------- ---------- ---------------
         1         10        0,2              30
         2         20        0,4              30
         3         30        0,6              30
         4         50        0,8              30
         5         70          1              30

CUME_DIST( ) OVER ( [ query_partition_clause ] order_by_clause )

with t as
(
 select 1 id, 'Сидоров' s from dual
  union all
 select 2, 'Cидoров' from dual
  union all
 select 3, 'Пирогов' from dual
)
select * from t t0
where soundex(t0.s) is not null;

        ID S
---------- -------
         2 Cидoров

with t as
(
 select 1 id, 'Сидоров' s from dual
  union all
 select 2, 'Cидoров' from dual
  union all
 select 3, 'Пирогов' from dual
)
select * from t t0, t t1
where UTL_MATCH.JARO_WINKLER_SIMILARITY(t0.s,t1.s)>=70
      and soundex(t0.s) is null
      and soundex(t1.s) is not null
      and t0.id<>t1.id;

        ID S               ID S
---------- ------- ---------- -------
         1 Сидоров          2 Cидoров
         3 Пирогов          2 Cидoров

with t as
(
 select 1 id, 'Сидоров' s from dual
  union all
 select 2, 'Cидoров' from dual
  union all
 select 3, 'Пирогов' from dual
)
select * from t t0, t t1
where translate(t1.s,'AaBbCcEegHKkMmOoPpTuXxy','АаВьСсЕедНКкМтОоРрТиХху')=t0.s
      and t0.id<>t1.id;

        ID S               ID S
---------- ------- ---------- -------
         1 Сидоров          2 Cидoров

with t as (
select to_date ('01.01.2009', 'dd.mm.yyyy') beg_date,
       to_date ('10.01.2009', 'dd.mm.yyyy') end_date
 from dual
union all
select to_date ('03.01.2009', 'dd.mm.yyyy') beg_date,
       to_date ('05.01.2009', 'dd.mm.yyyy') end_date
 from dual
union all
select to_date ('10.01.2009', 'dd.mm.yyyy') beg_date,
       to_date ('12.01.2009', 'dd.mm.yyyy') end_date
 from dual
union all
select to_date ('13.01.2009', 'dd.mm.yyyy') beg_date,
       to_date ('20.01.2009', 'dd.mm.yyyy') end_date
 from dual
union all
select to_date ('01.02.2009', 'dd.mm.yyyy') beg_date,
       to_date ('10.02.2009', 'dd.mm.yyyy') end_date
 from dual
)
--
select min (beg_date) as beg_date,
       max (end_date) as end_date
from (
      select beg_date,
             end_date,
             sum(strt_grp) over (order by beg_date, end_date ) grp_num
      from (
             select  beg_date,
                     end_date,
                     case when beg_date > 1 + max(end_date) over (order by beg_date, end_date rows between unbounded preceding and 1 preceding) then 1 end strt_grp
             from t
           )
     )
group by grp_num
order by beg_date;

BEG_DATE    END_DATE
----------- -----------
01-01-2009  20-01-2009
01-02-2009  10-02-2009

DBMS_LOCK.SLEEP(seconds  IN NUMBER);

with t as
(
  select 'a' a, 2 n from dual union all
  select 'b' a, 3 n from dual union all
  select 'c' a, 5 n from dual union all
  select 'd' a, 1 n from dual union all
  select 'e' a, 0 n from dual
)
select *
 from t,
      table(select collect(level) from dual connect by level<=t.n);

A          N COLUMN_VALUE
- ---------- ------------
a          2            1
a          2            2
b          3            1
b          3            2
b          3            3
c          5            1
c          5            2
c          5            3
c          5            4
c          5            5
d          1            1
e          0            1

12 rows selected

alter session enable  commit in procedure;
alter session disable commit in procedure;

-- создаем глобальный тип данных, локальный нельзя использовать
create or replace type xx_test_type is object ( id number, descr varchar2(20));
create or replace type xx_test_tab is table of xx_test_type;

declare
 vcollect xx_test_tab := xx_test_tab(); -- инициализация
begin
 -- заполняем данными
 vcollect.extend;
 vcollect(vcollect.count) := xx_test_type(1,'test1');

 vcollect.extend;
 vcollect(vcollect.count) := xx_test_type(2,'test2');
 -- запрос из коллекции
 for i in (select * from Table(vcollect) order by id )
 loop
   dbms_output.put_line(i.descr);
 end loop;
end;

with t as (
select 1 as id, 'a' gr from dual
union all
select 2 as id, 'a' gr from dual
union all
select 4 as id, 'b' gr from dual
)
select
 rtrim(to_char(sys_xmlagg(xmlelement(id,id ||',')).extract('/ROWSET/ID/text()').getclobval()),',') TEXT
from t
group by gr;

TEXT
-------
1,2
4