How to create a view with a column of counts of the occurence of values

If my table is:
ID
1
2
3
3
5
5
5
I want to create a view with the following result:
ID   COUNT
1     1
2     1
3     2
5     3
How would I accomplish this?

Sorry, my mistake. I was thinking about counting distinct events.
I created a table with your example values:
You should do a projection with a calculated column = 1:
And then add this calculated column as an aggregated measure on the aggregation node:
Result:
Cheers,
Fernando

Similar Messages

How To Create Table View With Same Column name But Different Table?

Hi All,
I have the problem to create a tableview with same column name but in different table.
The Table that i have:-
Table - PAC051MPROFORMA
Column - mrn,visitid
Table - PAC051TPROFORMA
Column - mrn,visitid
Table - PAC052MTRANSBILL
Column - mrn,visitid
Then i want to create a table view to view that table. This is my SQL
CREATE VIEW pacviewproforma (mrn,visitid,mrn,visitid,mrn,visitid)
As Select PAC051MPROFORMA.mrn,PAC051MPROFORMA.visitid,PAC051TPROFORMA.mrn,PAC051TPROFORMA.visitid,PAC052MTRANSBILL.mrn,PAC052MTRANSBILL.visitid
where
*(a.PAC051MPROFORMA.mrn=PAC051TPROFORMA.mrn)*
and
*(a.PAC051TPROFORMA.mrn=PAC052TRANSBILL.mrn)*
That SQL Return this error = ORA-00957: duplicate column name
Then I modify that SQL to
CREATE VIEW pacviewproforma (mrn,visitid)
As Select PAC051MPROFORMA.mrn,PAC051MPROFORMA.visitid,PAC051TPROFORMA.mrn,PAC051TPROFORMA.visitid,PAC052MTRANSBILL.mrn,PAC052MTRANSBILL.visitid
where
*(a.PAC051MPROFORMA.mrn=PAC051TPROFORMA.mrn)*
and
*(a.PAC051TPROFORMA.mrn=PAC052TRANSBILL.mrn)*
This time this error return = ORA-01730: invalid number of column names specified
What should i do?
Thanks...

Hi,
SQL> CREATE VIEW pacviewproforma (mrn,visitid,mrn,visitid,mrn,visitid)
2 As Select
3 PAC051MPROFORMA.mrn,
4 PAC051MPROFORMA.visitid,
5 PAC051TPROFORMA.mrn,
6 PAC051TPROFORMA.visitid,
7 PAC052MTRANSBILL.mrn,
8 PAC052MTRANSBILL.visitid
9 from PAC051MPROFORMA,PAC051TPROFORMA,PAC052MTRANSBILL
10 where
11 (PAC051MPROFORMA.mrn=PAC051TPROFORMA.mrn)
12 and
13 (PAC051TPROFORMA.mrn=PAC052MTRANSBILL.mrn);
CREATE VIEW pacviewproforma (mrn,visitid,mrn,visitid,mrn,visitid)
ERROR at line 1:
ORA-00957: duplicate column namePlease give different names to each column.
Something like this..
SQL> CREATE OR REPLACE VIEW pacviewproforma (MPROFORMA_mrn,MPROFORMA_visitid,TPROFORMA_mrn,TPROFORMA
_visitid,MTRANSBILL_mrn,MTRANSBILL_visitid)
2 As Select
3 PAC051MPROFORMA.mrn,
4 PAC051MPROFORMA.visitid,
5 PAC051TPROFORMA.mrn,
6 PAC051TPROFORMA.visitid,
7 PAC052MTRANSBILL.mrn,
8 PAC052MTRANSBILL.visitid
9 from PAC051MPROFORMA,PAC051TPROFORMA,PAC052MTRANSBILL
10 where
11 (PAC051MPROFORMA.mrn=PAC051TPROFORMA.mrn)
12 and
13 (PAC051TPROFORMA.mrn=PAC052MTRANSBILL.mrn);
View created.
SQL> DESC pacviewproforma;
Name                                      Null?    Type
MPROFORMA_MRN                                      NUMBER
MPROFORMA_VISITID                                  NUMBER
TPROFORMA_MRN                                      NUMBER
TPROFORMA_VISITID                                  NUMBER
MTRANSBILL_MRN                                     NUMBER
MTRANSBILL_VISITID                                 NUMBER
ORA-01730: invalid number of column names specifiedThe list of column nmae you specified during the CREATE VIEW should match with the SELECT list of the view.
Twinkle

How to create a view with parameters; read the documentation but nothing!

Hello!
I'm new to the Oracle world but together with my coworkers we need to very quickly study Oracle to figure out whether we'll add Oracle to our list of supported databases or not.
Question: How do I create a view with parameters?
I've read the documentation but I could not find this! I found the sql syntax to create a view but no parameters whatsoever...
I have found on the web some very complicated way of doing this, but doesn't Oracle support Views with parameters?
The goal here is to return a recordset, don't forget, so,please don't speak about stored procedures unless you are going to tell me how to get a recordset out of a stored procedure! ;)
Thanks for all your help and attention!
Jorge C.

You can set up a parameterized view via context as follows:
1. Set up a procedure to set your context values:
create or replace procedure p_set_context (p_context IN VARCHAR2,p_param_name IN VARCHAR2,p_value IN VARCHAR2)
as
BEGIN
sys.dbms_session.set_context(p_context,p_param_name,p_value);
END;
2. Create your context using the procedure you just created
create or replace context my_ctx using p_set_context
3. This is the test table I'll use
create table my_table(col1 number)
and populate it:
begin
for v_index in 1..10
loop
insert into my_table values(v_index);
end loop;
end;
and the view that will be parameterised
create or replace view v_my_table as select col1 from my_table where col1 between sys_context('my_ctx','start_range') and sys_context('my_ctx','end_range')
4. Now set the parameters using the procedure above.
begin
p_set_context('my_ctx','start_range','1');
p_set_context('my_ctx','end_range','5');
end;
5. Selecting from my_table will give you 1 to 10 (no surprise there :-) )
selectng from v_my_table will give you 1 to 5
You can use the context to set formats etc using the same principle. A common gotcha to watch for is trying to set the context directly using DBMS_SESSION.SET_CONTEXT instead of creating a procedure. This belongs to SYS and SYS won't have the privileges to set your context so you get an insufficient privileges result leading to much headscratching and unnecessary grants (at least that's my understanding of it).
Sorry Jorge, as you're new to Oracle I should also have pointed out for completeness sake, that you can change the parameters at any time through recalling the p_set_context, for example, following on from above, after your "select * from v_my_table" and seeing 1 to 5, you could then do
begin
p_set_context('my_ctx','start_range','3');
end;
and when you requery 'Select * from v_my_table' you will now see rows 3 to 5.
Bit of a simplistic example, but you can see how easy it is. :-)
Message was edited by:
ian512

How to create table view with reference table

Hi experts,
How to create table view with reference table in SE11, plz gve me stp by stp procedure.
pints grnded for hlp.

Hi
Go to Tcode se11 choose view and enter the name and create a popup opens up choose database view option
enter the description
On the left hand side choose the table name.
Click on view fields tab and choose your table fields.Here you can choose which fields you want in your view.
Save and then activate.
Hope this helps.
Regards,
Harish

How to create a table with editable column values.

Hi everyone,
I think this is very simple but i'm not able to find how to do this. This is my requirement. I need to create a table with n columns and 1 row initially. user should be able to enter data into this table and click of a button should insert data into the data base table. Also there should be a button at the bottom of the table to add 1 row to the table.
I know how to do the insert to database, but can anyone please let me know how to create a table that allows user to enter data and how to create a add 1 row button?
Thanks in Advance!

Raghu,
Go through the ToolBox tutorial Create Page & Advanced table section of OAF Guide.
Step 1 - You require to create EO & a VO based on this EO. This EO will be of DataBase table where you want to insert the data.
Step 2 - Create a Advanced table region. (Refer this Adavanced table section for more on this)
Step 3 - Attach this VO in the BC4J component of Adavanced Table region.
Regards,
Gyan

How to create a view with Oracle apps Org initialization ?

Hi,
How to create a view which needs Oracle apps org initialization to provide the correct data .
The purpose of the view is to be accessed in Primavera DB via a DB link for reporting purpose.
So how should the org be initialized so that the view returns the correct data when accessed from the remote data base using the DB link?
EX: step1 run fnd_client_info.set_org_context for the org
step2 query the veiw returns correct data in Oracle.
How can this be achieved if the view needs to be accessed via DB link?
sample view sql :
select po_header_id
from po_distributions_all pod
where (apps.po_intg_document_funds_grp.get_active_encumbrance_func
('PO',
pod.po_distribution_id
) <> 0
Thanks in advance!
Darshini

Hi,
This is not possible in Oracle. What u can do is create the view without the where clasue and supply the where clause at runtime.
Hope this helps...
Regards,
Ganesh R

How to create a view with parameter?

who can tell me hwo to create a view with
parameters just like a cursor?

Hi,
This is not possible in Oracle. What u can do is create the view without the where clasue and supply the where clause at runtime.
Hope this helps...
Regards,
Ganesh R

HOW TO CREATE A TABLE WITH 800 COLUMNS?

I have to create a table with 800 columns.I know the create statement to create a table but it will take more time.
So tell me the other method.

If you really think that you have to store 800 values for a given entity, it would be a wise idea if you store you information in columnar fashion. Make a main table and a attribute table, keep the primary identifier in the main table and store other attributes in the attribute table where you can keep the primary key of the first table as foreign key (not necessary) to maintain the relationship.
eg.
emp_id
emp_name
dob
city
state
country
pincode
1
Mr X
01/01/1990
ABC
ZXC
MMM
12345
Can be stored as
Main Table
emp_id
emp_name
1
Mr X
Attribute Table
attr_id
emp_id
attr_nam
attr_value
1
1
dob
01/01/1990
2
1
city
ABC
3
1
state
ZXC
4
1
country
MMM
5
1
pincode
12345
Creating table with large number of columns is bad design as suggested by other Gurus.
Thanks

How to create a form with two column headings

I have a business request to create a data form to handle multi year data by month. This will require creating a form with two column headings - with the first row be Year and second row be month, and data entry will begin in the third row and down.
I can do multiple row headings in the layout design, but somehow can not get it to work for multiple column headings.
Thanks in advance

If you're in the "Layout" tab, simply pull the "Years" dimension and the "Period" dimension into the Column section. Planning can be a little picky about where you "drop" the dimension as you're dragging and dropping it. Drop it in the cell directly under the letter name of the column. Other than that, there's not much to it.
Hopefully this helped,
- Jake

How to create a view with columns from multiple rows

I have posted this in SQL/PSL forum, but I hope database experts in this group can give me ideas too, also the need is from BI reports.
I have a table, say, project_milestones, which has these columns in concern:
proj_id, milestone_name, actual_end_date
with data:
proj_id, milestone_name, actual_end_date
===== ================ ==============
1001, Key Element Approve, 2009-10-02
1001, Final Synopsis, 2009-10-07
1001, Final Protocol Approved, 2009-10-15
1001, FPFV, 2010-01-10
1001, LPFV, 2010-03-12
1002, Key Element Approve, 2008-12-02
1002, Final Synopsis, 2009-01-07
1002, Final Protocol Approved, 2009-01-12
1002, FPFV, 2009-03-30
1002, LPFV, 2009-10-04
There are about 10 milestones in each project.
I have to create a view to flat these data at project level, looks like this:
proj_id, key_element_date, final_synopsis_date, final_protocol_approved_date, FPFV_date, LPFV_date, key_element_to_final_synopsis_days, final_synopsis_final_protocol_days, ....
How can I do this?
Thanks,

user9175541 wrote:
I have posted this in SQL/PSL forum, but I hope database experts in this group can give me ideas too, also the need is from BI reports.
I have a table, say, project_milestones, which has these columns in concern:
proj_id, milestone_name, actual_end_date
with data:
proj_id, milestone_name, actual_end_date
===== ================ ==============
1001, Key Element Approve, 2009-10-02
1001, Final Synopsis, 2009-10-07
1001, Final Protocol Approved, 2009-10-15
1001, FPFV, 2010-01-10
1001, LPFV, 2010-03-12
1002, Key Element Approve, 2008-12-02
1002, Final Synopsis, 2009-01-07
1002, Final Protocol Approved, 2009-01-12
1002, FPFV, 2009-03-30
1002, LPFV, 2009-10-04
There are about 10 milestones in each project.
I have to create a view to flat these data at project level, looks like this:
proj_id, key_element_date, final_synopsis_date, final_protocol_approved_date, FPFV_date, LPFV_date, key_element_to_final_synopsis_days, final_synopsis_final_protocol_days, ....
How can I do this?
Thanks,Create a pivot table and put "milestone_name" in the Columns section under the Labels.
Put "actual_end_date" in the Measures section and change the Aggregation Rule to "Max."
The rest of the attributes keep in Rows section.

Create materialized view with specific column sizes

Hi all,
I'm trying to create a materialized view with a specific a column size. Something like
create materialized view test_mv
refresh force on demand
as
select id,
       cast(my_compound_field as nvarchar2(50))
from ( select id,
              field1 || field2 my_compound_field
       from   my_table);But Oracle seems to ignore the cast and takes the maximum size it finds for field1 || field2 in the select query. The resulting table has a column nvarchar2(44) instead of nvarchar2(50).
This can give a problem when the view is refreshed... there could be new data that exceeds the current size, i.e. where length(field1 || field2) > 44.
How can I override the column size of a field in a materialized view?
Edit: Some additional info to clarify my case:
field1 and field2 are defined as nvarchar2(25). field1 || field2 can theoretically have a length of 50, but there is currently no data in my table that results in that length, the max is 44. I am afraid that there will be data in the future that exceeds 44, resulting in an error when the MV is refreshed!
Edited by: Pleiadian on Jan 25, 2011 2:06 PM

Cannot reproduce what you are saying is happening.
SQL> create table t (a nvarchar2(50), b nvarchar2(50));
Table created.
SQL> create materialized view tmv as
2 select a, b, a || b c from t;
Materialized view created.
SQL> desc tmv
Name                                      Null?    Type
A                                                  NVARCHAR2(50)
B                                                  NVARCHAR2(50)
C                                                  NVARCHAR2(100)
SQL> drop materialized view tmv;
Materialized view dropped.
SQL> create materialized view tmv as
2 select a, b, substr(a || b, 1, 10) c from t;
Materialized view created.
SQL> desc tmv
Name                                      Null?    Type
A                                                  NVARCHAR2(50)
B                                                  NVARCHAR2(50)
C                                                  NVARCHAR2(10)
SQL> select * from v$version;
BANNER
Oracle Database 11g Enterprise Edition Release 11.1.0.7.0 - 64bit Production
PL/SQL Release 11.1.0.7.0 - Production
CORE    11.1.0.7.0      Production
TNS for Linux: Version 11.1.0.7.0 - Production
NLSRTL Version 11.1.0.7.0 - Production
SQL>Edited by: 3360 on Jan 25, 2011 8:10 AM
And with data
SQL> insert into t values ('3123423423143hhshgvcdcvw', 'ydgeew gdfwe   dfefde wfjjjjjjj');
1 row created.
SQL> commit;
Commit complete.
SQL> desc tmv
Name                                      Null?    Type
A                                                  NVARCHAR2(50)
B                                                  NVARCHAR2(50)
C                                                  NVARCHAR2(10)
SQL> select * from tmv;
A
B                                                  C
3123423423143hhshgvcdcvw
ydgeew gdfwe   dfefde wfjjjjjjj                      3123423423

How to create a report with dynamic columns

Hi all,
I am using Apex 4.0 with Oracle 10g
I am creating a report and I need to display columns dynamically based on the item values.
example:
I have a table employee with columns name, designation, sal
In the report page i have a select list with designations and when I select a designation from the select list,
I need to display the names of the employees horizontally,
like each name as a new column in the report with that particular designation. and same has to continue when I select different designations.
Can some one help me how we can do that.
I appreciate your answer
Thanks,
Rik

Essentially you want to write a pl/sql function which returns a varchar2 string. The contents of the string must be a valid sql statement.
Once you have done this, you need to add a report region as type sql report and you will have the option of writing it as a query or as a function returning query. Choose function returning query and enter in the function call.
Note your function must be valid, and must be executable by your apex parsing schema.
example:
create or replace
function test_report( p1_tablename in varchar2)
return varchar2
is
v_query varchar2(4000);
begin
v_query :=
'SELECT * from '||p_tablename;
return v_query;
end test_report;Edited by: Keith Jamieson on Aug 15, 2011 4:50 PM

How to create a view with "WITH CLAUSE"

Hi,
I have a query with "WITH" CLAUSE , I need to create a view on this query. But I am getting error like
ORA-32034 : Unsupported sue of WITH clause.
Please help me...!!
Please find below my query...!!
WITH RANGE
         AS (SELECT A.MASTERMACHINEID,
                    a.startdate,
                    a.enddate,
                    a.startdate - (1 / 3) + (lvl) * 1 / 3 SHIFT_ST_DT,
                    a.startdate + (lvl) * 1 / 3 AS SHIFT_END_DT,
                    a.quantity,
                    (LEAST ( enddate, TODATE) - GREATEST ( FROMDATE, startdate)) * 24 TOTAL_HRS,
                    (enddate - startdate) * 24 AVAIL,
                   todate,
                   fromdate
              FROM OMP A,
                   (SELECT LEVEL lvl
                      FROM (SELECT MAX (enddate - startdate) AS diff FROM OMPWORKORDER)
                    CONNECT BY LEVEL <= (diff) * 3),
                   MASTER B
             WHERE A.MASTERMACHINEID = B.MASTERMACHINEID
               AND lvl / 3 <=(enddate - startdate) + 1
            ORDER BY SHIFT_ST_DT)
   SELECT shift_date,
          shift_num,
          shift_hrs,
          DECODE (SIGN (SHUT_DWN_TIME), -1, 0, SHUT_DWN_TIME),
          8 - DECODE (SIGN (SHUT_DWN_TIME), -1, 0, SHUT_DWN_TIME) shift_avail_hrs,
          qty,
          total_qty
     FROM (SELECT TRUNC (SHIFT_ST_DT) shift_date,
                  ROW_NUMBER () OVER (PARTITION BY TRUNC (SHIFT_ST_DT) ORDER BY SHIFT_ST_DT) shift_num,
                  8 shift_hrs,
                  (LEAST ( SHIFT_END_DT, TODATE) - GREATEST ( FROMDATE, SHIFT_ST_DT)) * 24
                    SHUT_DWN_TIME,
                  quantity / (avail - TOTAL_HRS) qty,
                  round(((SHIFT_END_DT - SHIFT_ST_DT) * 24 - (LEAST (SHIFT_END_DT, TODATE) - GREATEST (FROMDATE, SHIFT_ST_DT)) * 24) * QuantiTY / (AVAIL - TOTAL_HRS),2)
                     TOTAL_QTY
             FROM RANGE A );Regards
KPR
Edited by: BluShadow on 17-Mar-2011 09:48
added {noformat}{noformat} tags for readability

Try creating view on following query, if it can help you:
SELECT shift_date,
    shift_num,
    shift_hrs,
    decode(SIGN(shut_dwn_time),     -1,     0,     shut_dwn_time),
    8 -decode(SIGN(shut_dwn_time),     -1,     0,     shut_dwn_time) shift_avail_hrs,
    qty,
    total_qty
FROM
        SELECT TRUNC(shift_st_dt) shift_date,
             row_number() over(PARTITION BY TRUNC(shift_st_dt)
         ORDER BY shift_st_dt) shift_num,
             8 shift_hrs,
            (least(shift_end_dt,      todate) -greatest(fromdate,      shift_st_dt)) *24 shut_dwn_time,
             quantity /(avail -total_hrs) qty,
             ROUND(((shift_end_dt -shift_st_dt) *24 -(least(shift_end_dt,      todate) -greatest(fromdate,      shift_st_dt)) *24) *quantity /(avail -total_hrs),      2) total_qty
         FROM
              SELECT a.mastermachineid,
                 a.startdate,
                 a.enddate,
                 a.startdate -(1 / 3) +(lvl) *1 / 3 shift_st_dt,
                 a.startdate +(lvl) *1 / 3 AS
             shift_end_dt,
                 a.quantity,
                (least(enddate,      todate) -greatest(fromdate,      startdate)) *24 total_hrs,
                (enddate -startdate) *24 avail,
                 todate,
                 fromdate
             FROM omp a,
                    (SELECT LEVEL lvl
                 FROM
                    (SELECT MAX(enddate -startdate) AS
                    diff
                     FROM ompworkorder)
                CONNECT BY LEVEL <=(diff) *3),
                 master b
             WHERE a.mastermachineid = b.mastermachineid
             AND lvl / 3 <=(enddate -startdate) + 1
             ORDER BY shift_st_dt
         ) a
;Regards,
Dipali.l

How to create materialized view with parameter and index ?

Hi all,
i am using oracle 11g.
i want to create parameter materialized view with two parameter (STORED_VALUE, LOV_NAME) with an index .
i have below view
CREATE OR REPLACE FORCE VIEW SR_MY_TEST(DISPLAYED_VALUE, STORED_VALUE, LOV_NAME) AS
SELECT DISPLAYED_VALUE , LOVVALUE.STORED_VALUE , lovname.lov_name
           FROM (SELECT T.LOV_VALUE_ID,
      T.LOV_ID,
      T.ORG_ENTITY_ID,
      T.STORED_VALUE,
      T.DISPLAYED_VALUE,
      T.ENTERPRISE_ID
     FROM MS_QS_LIST_OF_VALUES_T T) lovvalue, ms_qs_lov_names lovname
          WHERE lovvalue.lov_id = lovname.lov_id
            AND lovvalue.org_entity_id = 1
            and LOVVALUE.ENTERPRISE_ID = 100000
            AND LOVNAME.ENTERPRISE_ID = 100000;
i want to create index on   STORED_VALUE, LOV_NAME
Thanks
Damby

No.AFAIK, there's nothing called as "parameterized MV".
Materialized View store data like tables (and not like Views). So, does it make sense when you say - "table with parameters" ?
Could you please explain your business requirement?
What is the purpose behind those 2 parameters?

How to create analytic view with tables VBRK VBRP KONV ?

Hi Gurus,
What is the best way to combine in a analytic view tables VBRK VBRP and KONV for better optimization or
how to make the relationship tables VBRK VBRP KONV with better performance in Hana Studio ?
This analytic view should be used in a calculation view to the final calculations.
Thanks !

Hi Rogerio,
Greetings.
Basically , when you design your analytic views , while designing your data foundation , you can directly join the tables with the corresponding key attributes . Analytic views are capable of optimizing the join operation when we access the view.Logic of joining is purely depends on your business requirement
Sreehari.

How to create a view with a column of counts of the occurence of values

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