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Need to join row data into columns in Oracle


Need to join row data into columns in Oracle

By : user2175694
Date : October 14 2020, 08:10 PM
I wish this help you You can use LISTAGG:
code :
SELECT
MAX(ID),
LISTAGG(GRP, ',') WITHIN GROUP (ORDER BY SUBSTR(GRP, 1, 1)) AS GRP,
LISTAGG(VALUE, ',') WITHIN GROUP (ORDER BY SUBSTR(GRP, 1, 1)) AS PAIRS
FROM YourTable
GROUP BY SUBSTR(GRP, 1, 1);


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Oracle - SQL Join 3 columns

Oracle - SQL Join 3 columns


By : Kang
Date : March 29 2020, 07:55 AM
may help you . You need to join the Employee and Person tables once for each type: Employee, Supervisor, and Supervisor Boss. This can be done by aliasing the tables:
code :
SELECT
  EmpPerson.Name,
  SupPerson.Name,
  BossPerson.Name
FROM Task T
INNER JOIN Employee EmpEmp ON T.ID_Employee = EmpEmp.ID_Employee)
INNER JOIN Person EmpPerson ON EmpEmp.ID_Person = EmpPerson.ID_Person
INNER JOIN Employee SupEmp ON T.ID_Supervisor = SupEmp.ID_Employee
INNER JOIN Person SupPerson ON SupEmp.ID_Person = SupPerson.ID_Person
INNER JOIN Employee BossEmp ON T.ID_Supervisor_Boss = BossEmp.ID_Employee
INNER JOIN Person BossPerson ON BossEmp.ID_Person = BossPerson.ID_Person
Oracle SQL join having exclusive row matching with non-key columns

Oracle SQL join having exclusive row matching with non-key columns


By : Overloaded_Wolf
Date : March 29 2020, 07:55 AM
To fix the issue you can do I fail to se the logic behind the join condition, except that for each part create one random model+color combination.
We can do that by introducing an unique id for each part with everyone's favorite analytic function row_number and then use that in the join.
code :
with
models(part, model) as (
  select 1, 'XXX' from dual union all
  select 1, 'YYY' from dual union all
  select 2, 'ZZZ' from dual
),
models2(part, rn, model) as (
  select
   part
  ,row_number() over (partition by part order by part) as rn
  ,model
  from models
),
colors(part, color) as (
  select 1, 'RED'    from dual union all
  select 1, 'BLUE'   from dual union all
  select 1, 'YELLOW' from dual
),
colors2(part, rn, color) as (
  select
   part
  ,row_number() over (partition by part order by part) as rn
  ,color
  from colors
)
select
 models2.part
,models2.model
,colors2.color
from models2
inner join colors2 on colors2.part = models2.part
                  and colors2.rn = models2.rn
;
PART MODEL      COLOR
---- ---------- ----------
   1 XXX        RED
   1 YYY        YELLOW
How to join two tables from two columns in Oracle

How to join two tables from two columns in Oracle


By : ARTISTAT
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , I have two tables , With proper table aliases, it becomes much easier:
code :
select u.name, b.name as Birthplace, l.name as LivingIn
from User u
left join location b
    on u.birthplace= b.id
left join location l
    on u.living_in = l.id
Oracle join to either of multiple columns

Oracle join to either of multiple columns


By : Bigfish
Date : March 29 2020, 07:55 AM
I wish this help you What i would try is to unpivot the relation table.
After that join the info table on the values and count the number of times the val gets repeated.
code :
create table relation(num1 int,num2 int, num3 int);

insert into relation values(1,2,3);
insert into relation values(2,4,5);
insert into relation values(3,4,null);

create table info(num int, a_lot_of_other_info varchar2(100));
insert into info
   select 1,'asdff' from dual union all
   select 2,'werwr' from dual union all
   select 3,'erert' from dual union all
   select 4,'ghfgh' from dual union all
   select 5,'cvbcb' from dual 

 select a.num
        ,max(a_lot_of_other_info) as a_lot_of_other_info
        ,count(*) as num_of_times
   from info a
   join (select val
           from relation a
         unpivot(val for x in (num1,num2,num3))
         )b
      on a.num=b.val  
 group by a.num 
 order by 1
Joining tables (Oracle) without join columns

Joining tables (Oracle) without join columns


By : María José Garrido Z
Date : March 29 2020, 07:55 AM
it should still fix some issue You haven't given any schema descriptions, so I assumed the column names based on what column you expect in output. This should do:
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