Oracle SQL group data by value

Oracle SQL group data by value

By : user2949713
Date : November 17 2020, 04:28 AM
this one helps. Assuming I'm understanding your question correctly, you're looking for conditional aggregation, something you can do with max and case:
code :
select id, 
    max(case when attr_name = 'XPTA' then attr_id end) xpta,
    max(case when attr_name = 'XPTO' then attr_id end) xpto,
from table_a 
group by id, start_date

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Oracle group data

Oracle group data

By : user3579898
Date : March 29 2020, 07:55 AM
will help you I don't use ROLLUP often, but the difficulty seems to be that once the ROLLUP is applied, there is no connection between the summary rows and the detail rows, so you can't easily sort them as groups within the overall result set, which is what I think you want to do.
I think this will get what you want, but it could be inefficient on large data sets; it essentially calculates the subtotal values twice, once with rollup, and once with an analytic function.
code :
select * 
  from (select m.col1, 
               sum(m.col4) sum_c4
          from mytable m
        group by rollup(m.col1, (m.col2, m.col3))
order by case when col1 is null then 1 
              else 0 
         end asc,                                     -- put grand total line at end of entire set
         sum(sum_c4) over (partition by col1) desc,   -- sort subgroups by descending subtotal
         col1,                                        -- tiebreaker for subgroups with same total
         case when col2 is null then 1 
              else 0 
         end asc,                                     -- put subtotal line at end of each group
         sum_c4 desc                                  -- put detail lines in descending order
unable to group the data in ORACLE with GROUP BY clause

unable to group the data in ORACLE with GROUP BY clause

By : Igor Koch
Date : March 29 2020, 07:55 AM
I hope this helps you . While using the USING clause in a query, specifying table name is redundant. Only the column name is enough information for the database. For example - select office_id. Try this :
code :
select office_id,
from offices join  staffs using (office_id) join managers using (manager_id)
group by office_id;
Group a data in Unix shell or Group by in Oracle

Group a data in Unix shell or Group by in Oracle

By : Anna Hershenfeld
Date : March 29 2020, 07:55 AM
With these it helps You don't give a whole lot of information to go on.
In general, doing operations in the database will be faster than moving the data to another environment. There are several reasons for this:
Oracle : Error ORA-00937: not a single-group group function in Oracle Join Query

Oracle : Error ORA-00937: not a single-group group function in Oracle Join Query

By : user3754118
Date : March 29 2020, 07:55 AM
I wish this help you I suppose you have to add cy.continent to the select statement of your first try when you group by Cy.continent.
Try something like that (floor is for the "round it down to the nearest integer" - part):
code :
SELECT floor(AVG(City.population)),Country.continent FROM City JOIN Country ON City.CountryCode = Country.Code
GROUP BY Country.continent;
Group data in Oracle

Group data in Oracle

By : user1871084
Date : March 29 2020, 07:55 AM
it helps some times The requirement is really hard to understand. From how I see it:
Pick one record of tbl_pattern. Take all records of tbl_main. That's a CROSS JOIN. If a tbl_main record matches the tbl_pattern record and the tbl_pattern record matches a row in tbl_parent then status is 2. If a tbl_main record plus the tbl_pattern record's request_no matches a row in tbl_child then this row's status is to be shown.
code :
    when p.order_no = m.order_no 
    and p.code = m.code
    and p.disp_order = m.disp_order
    and p.lvl = m.lvl
    and p.description = m.description
    and (p.order_no, p.code, p.disp_order, p.lvl, p.description, p.request_no) in
      select order_no, code, disp_order, lvl, description, request_no
      from tbl_parent
    ) then 2
      select state
      from tbl_child c
      where c.order_no = m.order_no
        and c.code = m.code
        and c.disp_order = m.disp_order
        and c.lvl = m.lvl
        and c.description = m.description
        and c.request_no = p.request_no
  end as status
from tbl_pattern p
cross join tbl_main m
where p.order_no = 'RM001-01'
  and p.code = 1
  and p.disp_order = 0
  and ...;
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