Returning a calculation of columns

Suppose there are two NUMBER columns in a table:
- time
- distance
What techniques are there to show a column representing velocity?:
time divided by distance
Ideas?

Velocity is in meters per sec (SI units) .. so a minor modification to the query -
select time, distance, distance / time as velocity from my_table
Shakti
http://www.impact-sol.com
Developers of Guggi Oracle - Tool for DBAs and Developers

Similar Messages

How to display a percentage sign in calculated member column?

Hello all,
in my report I have a calculated member column whose value is determined by follwing value formula:
if CurrentColumnIndex - 2 = 1 then
        If GridValueAt(CurrentRowIndex, CurrentColumnIndex-3, CurrentSummaryIndex) = 0 then
        0
        else
        (GridValueAt(CurrentRowIndex, CurrentColumnIndex-1, CurrentSummaryIndex)/
        GridValueAt(CurrentRowIndex, CurrentColumnIndex-3, CurrentSummaryIndex)) * 100
    else
        If GridValueAt(CurrentRowIndex, CurrentColumnIndex-5, CurrentSummaryIndex) = 0 then
        0
        else
        (GridValueAt(CurrentRowIndex, CurrentColumnIndex-1, CurrentSummaryIndex)/
        GridValueAt(CurrentRowIndex, CurrentColumnIndex-5, CurrentSummaryIndex))*100
Returned is a numeric value and it is being correctly displayed in calculated member column. As the value should represent percentage, I need to display a % sign after every value.
How would I achieve this? I have seen a thread here in the discussion where approach with a formula and DisplayString function is mentioned - but there are no details how this could be achieved....
The crosstab in question looks like this:
Calculated Member is based on "REV_TOTAL" group column.
I also attached the .rpt file (renamed to .txt for upload)
Many thanks in advance,
Marin

Hello Raghavendra,
thanks for the quick reply.
Unfortunately it is not as easy at it seems - calculated member column is not showing in report designer and I can not apply the suggested approach with formatting toolbar...
The column only shows here (right click on table -> "Advanced Calculations" -> "Calculated Member...") and there is no possibility to format it directly:
Any other suggestions?
Many thanks,
Marin

HOW DO I PUT FINANCIAL CALCULATIONS IN COLUMNS AT DEVELOPMENT STAGE?

Hi Colleagues,
I am trying to programme a financial database with Oracle Apex 11g 2.0. My focus is to put in formulas that would automatically calculate the returns of number of columns added, subtracted, divided or multiplied together in specified columns (e.g. Column A + Column B = Column C) apart from using SQL UPDATE statements. I used the UPDATE command:-
UPDATE EMPLOYEES calc
SET
GROSS_SALARY =(BASIC_SALARY + ALLOWANCES),
NET_SALARY =(GROSS_SALARY - DEDUCTIONS);
What appears is that each time I make new entries leaving the Gross Salary and Net Salary columns blank, I had to copy and paste the syntax into the SQL COMMAND window and run before the columns are updated
Now, assume a bank Teller at the counter is paying cheques and receiving deposits how can he always be copying, pasting and running sql updates on every customer's transaction? Is there any script that can be used at the development stage so that when the end-user makes initial entries the calculated columns display the results?
My second problem is that; how can I print from the Report or the Form page in the database?
Counting on your assistance
Godis-Tei

Godis-Tei wrote:
<snip>
As I said earlier on, I am very new in learning database development.
</snip>I stopped reading here. No offense meant, but if you are new in database development, you should ask rather than tell. It is very bad design to store anything that can be calculated - that is what a database view is for. Financial calculations are rarely if ever anything ad-hoc that need to be done on the fly - they are based on known columns and known formulas.
My second piece of advice is that you need to stop basing things on what MS Access does. MS Access is a toy aimed at non-developers to make it easy. Oracle has had the #1 relational database pretty much forever, so they don't really need to support anything like you're describing. I don't know what competitive market or world you're talking about, but Oracle is generally not compared to MS Access very often. That would be like comparing a Ferrari to a VW Jetta - they are both cars and have 4 wheels, but the comparisons stop right there.
Thirdly my last piece of advice would be to use OTN as a learning resource. Keep in mind that just because you did something one way in one software suite, it doesn't mean it is a best practice in another. Take locking for example - if you are coming from certain databases, an update to a row will block others from selecting that same data. Oracle works completely differently, so you need to learn how Oracle works, and stop expecting it to work the same as others.
Hope you take my advice!

Return data from all columns apart from a certain data type.

Bit stuck on something, hope somebody here can help:
I want to do a 'select * from ' a table, to return all columns except ones of a certain datatype. ie. I want to return data from all columns, excluding columns of datatype 'SDO_GEOMETRY'.
This gives me the list of columns:
SELECT COLUMN_NAME
FROM   USER_TAB_COLUMNS
WHERE TABLE_NAME = 'ORDER_ITEM'
AND   DATA_TYPE <> 'SDO_GEOMETRY'; But I can't seem to take it any further...
Now if I knew the columns beforehand, then of course I could just list them, excluding the geometry column, but this is to be used for a plug-in for MS Word, where a user can pick database columns to dynamically fill a report from - but I don't want the geometry columns as these can't be handled in this way.

Hi Reggie,
> connects to the database and presents a list of tables
My guess is that this macro is written so it selects from all_tab_cols.
Change that plugin and let it select from a view like the one above. That way, the users won't be able to see/pick anything that you are not able/willing to present for them.
Edit:
You could even tease your users, and let them see the columns, but not being able to pick them.
create or replace view available_tab_columns
as
   select decode(pickable.data_type, null, 0, 1) pickable
         ,atc.* -- narrow down yourself
     from all_tab_cols atc -- or maybe user_tab_cols
         ,(select 'CHAR' data_type from dual union all
           select 'DATE' from dual union all
        select 'NUMBER' from dual
           -- complete positive list, yourself
          ) pickable
    where atc.data_type = pickable.data_type(+);Regards
Peter
Message was edited by:
Peter Gjelstrup

How to clear alert when a null value is returned for a metric column?

Hey all,
Recently, I've encountered a problem about clearing alert when a null value is returned for a metric column. From Oracle official doc, it seems that NO_CLEAR_ON_NULL could be used for this propose. However, it doesn't.
Here is the line from doc, you can see when NO_CLEAR_ON_NULL is set as FALSE, the null value will clear alert, and the default value for NO_CLEAR_ON_NULL is FALSE.
NO_CLEAR_ON_NULL: This attribute is used to control severity clearing when a null value is returned for a metric column. It defaults to FALSE with the behavior that a null value ends up clearing previous alert severities. With a TRUE value for this attribute, null values will be skipped in severity evaluations without clearing the severity.
TRUE | FALSE (default)
STATELESS_ALERTS: This attribute if set to TRUE indicates to EM that alerts on this
column will not have corresponding clears. This allows the UI to decide whether to
allow users to manually clear alerts on this column.
TRUE | FALSE (default)Here is my code for the metric,
-- meta definition
<Metric NAME="Flushing_Table_Overtime" TYPE="TABLE" HELP="NO_HELP">
    <Display>
      <Label NLSID="mmd_ip">Flushing Table Overtime</Label>
    </Display>
    <TableDescriptor>
      <ColumnDescriptor NAME="State" TYPE="STRING" IS_KEY="FALSE">
        <Display>
          <Label NLSID="mmd_rc_State">State</Label>
        </Display>
      </ColumnDescriptor>
      <ColumnDescriptor NAME="Time_Seconds" TYPE="NUMBER" IS_KEY="FALSE">
        <Display>
          <Label NLSID="mmd_fto_Time_Seconds">Flush Table consume Seconds</Label>
        </Display>
      </ColumnDescriptor>
    </TableDescriptor>
    <ExecutionDescriptor>
      <GetTable NAME="MysqlProcessAggregate"/>
      <GetView NAME="v_flushing_tables" FROM_TABLE="MysqlProcessAggregate">
        <Column NAME="State" />
        <Column NAME="Time_Seconds" />
        <Filter COLUMN_NAME="State" OPERATOR="EQ">Flushing tables</Filter>
      </GetView>
    </ExecutionDescriptor>
</Metric>
-- coll definition
<CollectionItem NAME="Flushing_Table_Overtime">
    <Schedule>
      <IntervalSchedule INTERVAL="10" TIME_UNIT="Min" />
    </Schedule>
    <MetricColl NAME="Flushing_Table_Overtime">
      <Condition COLUMN_NAME="Time_Seconds"
                 CRITICAL="30" OPERATOR="GT"
                 MESSAGE="There is a Flushing Table command has exceeded %critical_threshold% seconds."
                 MESSAGE_NLSID="msg_Flushing_Table_Overtime" />
    </MetricColl>
</CollectionItem>If this feature can not be achieved by coding XML, then is there a way to clear alert with Oracle Package? I have confirm neither sysman.em_severity.delete_current_severity nor sysman.em_severity.clear_alerts could do it.
Would anyone give me a hint?
Thanks in advance!
Best wishes,
Satine

> I am executing in this manner
var RESULT BOOLEAN;
BUT I am unable to create variable with boolean data type.
WARNING. Do not confuse SQL*Plus with PL/SQL.
There is no variable command in PL/SQL. PL/SQL does support the boolean data type.
There is a variable command in SQL*Plus. It allows one to define bind variables. It is limited in the data types it supports. It does not support boolean as a bind variable type.
SQL*Plus is a CLI (Command Line Interface) client tool. It has a very limited vocabularly, allowing you to (primarily):
a) configure its local environment (e.g. size of the terminal ito number of characters per lines)
b) configure its bevahiour (e.g. spooling data to a file)
c) defining substitution and bind variables
And that's it. It is not PL/SQL. It is not SQL. It takes the PL/SQL and SQL you enter, and submit that to the Oracle server. (it does some basic parsing of the data to substitute variables and bind variables where applicable)
Do not confuse this CLI client tool with the server side PL/SQL or SQL languages.

Using CASE to return a set of columns

Good day all,
Many times I have used the CASE construct to return a value based on a set of conditions but now I have a need to return a set of columns based on a set of condition.
Look at this
A
=====
id
name
account
zip_code
status
B
=====
id
name
account
zip_code
C
=======
id
name
account
zip_code
D
======
id
name
account
zip_code
I want a query that would return
id - of A
name, - of A
beneficiary, - name column of either, A, B, C or D depending on the value of A's status (A, B, C, D)
account, - account column of either, A, B, C or D depending on the value of A's status (A, B, C, D)
zip_code - zip_code column of either, A, B, C or D depending on the value of A's status (A, B, C, D)
Can anyone help with construct that could achieve this with queries only. I don't feel like this warrants PLSQL.
regards

Hi,
Is this what youa re looking for?
As Frank has said not sure what is the relationship between your tables and what Output you expect.
Sample Data used.Avoid using reserved words for column like ID and NAME
create table a (id1 varchar2(10),name1 varchar2(10),account1 varchar2(10),zip_code varchar2(10),status varchar2(10))
create table b (id1 varchar2(10),name1 varchar2(10),account1 varchar2(10),zip_code varchar2(10))
create table c (id1 varchar2(10),name1 varchar2(10),account1 varchar2(10),zip_code varchar2(10))
create table d (id1 varchar2(50),name1 varchar2(50),account1 varchar2(50),zip_code varchar2(50))
insert into A values (0, 'michael', '000000', '213401', 'A');
insert into A values (1, 'johnson', '63423', '093401', 'B');
insert into A values (2, 'fred', '23221', '203901', 'D');
insert into B values (1, 'brother', '1129812', '093083');
insert into B values (2, 'stuggard', '0093732', '087366');
insert into B values (3, 'jekins', '9009387', '329838');
insert into C values (1, 'mary', '009300', '093083');
insert into C values (2, 'lori', '112212', '654032');
insert into C values (3, 'helen', '909083', '938292');
insert into D values (1, 'mother & father', '093291', '329232');
insert into D values (2, 'Uncles & Aunties', '098762', '742326');
insert into D values (3, 'Grannies', '237643', '864433');
Query
select
case when a.status='A' then
a.id1
when a.status='B' then
b.id1
when a.status='C' then
c.id1
when a.status='D' then
d.id1
end ID1,
case when a.status='A' then
a.name1
when a.status='B' then
b.name1
when a.status='C' then
c.name1
when a.status='D' then
d.name1
end ID1
,case when a.status='A' then
a.account1
when a.status='B' then
b.account1
when a.status='C' then
c.account1
when a.status='D' then
d.account1
end account1,
a.status status,
case when a.status='A' then
a.zip_code
when a.status='B' then
b.zip_code
when a.status='C' then
c.zip_code
when a.status='D' then
d.zip_code
end zip_code
from a ,b,c,d
where a.id1=b.id1 and b.id1=c.id1 and c.id1=d.id1Cheers!!!
Bhushan

ALV grid, prevent return to line 1 column 1 after using filter button

How can I prevent the ALV grid display from returning to line 1, column 1, after a user has modified the display using the filter or sort button ? I know this is possible using the is_stable field when control is passed to my ALV code, but when the automatic on-screen buttons are used I can't find a way of controlling how the screen is displayed.

Max,
Thanks, the AFTER_USER_COMMAND event allows me access after the filter or sort button has bee npressed, but I am unable to prevent the grid from reverting to column1 line1. By using the method GET_CURRENT_CELL I can find out the column, but it does not return me the row. I have tried putting this column id into SET_CURRENT_CELL_VIA_ID, as suggested by Naimesh above, and calling this from the AFTER_USER_COMMAND method, but it does not effect how the grid displays.
Any further advice would be very welcome.

Calculated Percentage Columns in Pivot Table loose formating in Excel

I have a simple report built using pivot table ( OBIEE 11.1.1.5.0)
1 Metric and 1 dimension using pivot table. and I duplicated the metric column and change it to % column.(Show data as % of column). SO far so good. Below is the snapshot
http://tinypic.com/r/2s14xa9/7
Now i download the report in excel and all the % values are messed up . Below is how it looks
http://tinypic.com/r/bede90/7
I tried messing with data formats etc..nothing works.. I cannot add a custom column format to the metric column since it will impact the derived % column.
Is this a bug ?Any pointers ..
Thanks

Hi,
Follow up this SR:
SR 3-5060435331: Calculated Percentage Columns in Pivot Table loose formating in Excel
Workaround: (not sure may be give a try)
also give a try like below one then try to download it may work.
In that % column -->add the below statement in the Custom CSS section of the column properties:
mso-number-format:"\@"
Refer snapshot here:
http://i53.tinypic.com/a09kqv.jpg
This will treat the data in the column as text while downloading to excel, hence retaining any leading or trailing spaces.
Thanks
Deva

Return to more than columns from LOV

I need return to more than columns from LOV. All columns belong to one form region
Please helpl me
Mary

Hi Mary,
Do you mean you need to return more than 3? If so then in the link area change the Target to URL and do something like the following:
f?p=&APP_ID.:7:&SESSION.::&DEBUG.::P7_UNIQUE_ROWID,P7_OET_TBL_NM:#UNIQUE_ROWID#,#OET_TBL_NM#Items on left separated by commas, values on right separated by commas and a colon (:) in the middle...make sure the items & values are placed in the same order.
Mike

How to return varied no.of columns from Stored Procedure?

Hi All,
I have situation where I need to return with columns which will keep changing. At any given point of time I will be returning 10 columns. But there are some conditions where I need to add multiples of 4 no.of columns.
Ex: Always 10 columns.
If condition1
return 10 + 4 columns
if condition2
return 10 + 4 + 4 columns
How can I handle this?
Can any one help me here.
Thanks
Vikram

Change the stored procedure to a single column set return type like returning nulls if column is not applicable.
Alternate, split the sp to single column set sp-s.
You can get the returned column set by SELECT TOP(0) * INTO spxColumns FROM OPENQUERY..... method:
http://sqlusa.com/bestpractices2005/selectfromsproc/
http://www.sqlusa.com/bestpractices/select-into/
Note, however, the OPENQUERY method is not completely clean.
Kalman Toth Database & OLAP Architect
Free T-SQL Scripts
New Book / Kindle: Exam 70-461 Bootcamp: Querying Microsoft SQL Server 2012

How to return a record's column head given a record of a table.

Hi:
Do you know how to return a record's column head given a record of a table.
For example, in a table with 3 columns "ID", "Education", "Age".
Give you the record "Bachelor", how can you use a SQL to return the correspondent column head "Education"?
Thanks for the big help.

Have a look at http://java.sun.com/j2se/1.4.2/docs/api/java/sql/ResultSetMetaData.html.
import java.sql.*;
import java.util.*;
ResultSet rs = stmt.executeQuery("SELECT * FROM testTable");
ResultSetMetaData rsmd = rs.getMetaData();
// loop through rsmd.getColumnCount() {
     String columnName = getColumnName(i);
     // run a query SELECT * FROM testTable WHERE columnName='Bachelor'
     // if rs !=null return columnName and break out of the loop
}

Alternate select lists on 2 columns and return more than 1 column

Hi,
I try to build 2 alternate select lists and each select list should return more than 1 column
2 Columns PART_ID and PART_SPECIFICATION
Now I build a select list on PART_ID like
select part_id d,part_id r from parts;
The result should be:
Column PART_ID has PART_ID and PART_SPECIFICATION must be text of PART_SPECIFICATION
The other select list based on PART_SPECIFICATION should be like
select part_specification d,part_id r from parts;
Now it should be displayed part_specification in PART_SPECIFICATION and part_id in PART_ID.
This is because one user knows the part_id and another knows only the specification
Please help me
Siegwin

Hi Siegwin,
Check your application Page 7(copy of page 500) using select list instead of plugin, it gives all values.
and works very well,
use ajax process to get Xml data into page items
following are changes
application process: getData
application item : TEMPORARY_APPLICATION_ITEM
create one function in page html header pull_multi_value()
and it call on page item p7_empno on html form element attribute as onchange="pull_multi_value(this.value)";
this may Helps you,
Pars.

How to write a Query a table and the return result is the column name

Hi All
Pls advise how to write a query whereas the return result is the
column name.
I know there is describe <table_name>;
Is there any other ways?
Pls advise
Tj
Edited by: user600866 on Oct 14, 2008 12:13 AM

Data Dictionary table user_tab_columns has all the column names. You can query that and get what ever you want.
To get the column list of a table just query
select *
from user_tab_columns
where table_name = <your_table>Edited by: Karthick_Arp on Oct 14, 2008 12:18 AM

SSIS OLE DB Source in Data Flow Task calling SP that returns variable number of column as output

We have one old Stored Proc that I need to reuse. But that stored proc returns different number of Columns as output depending on input Parameter. Say, if I pass 1 to 9 it will return 'ID', if i pass 10 to 33 it will return 'ID', 'Name', if I pass
34 to 51 it will return 'ID', 'Name', 'DefaultPosition'
In this way.
Now I wanted to use this in OLE DB Source in SSIS DFT.
During that time immediately it is picking all possible columns in Available External Columns. Even if I manually select/delete those, package is failing at Runtime, because in Runtime the parameter this will get, it should always return one & only one
column which is ID. [Because in this package I will only have to pass parameters like, 1 or 2 or 5 or 7 or 9.
Which in every case should return only ID from stored proc.
Any Idea how I can get this please?
Regards, Avik M.

Has any one tried something like it? Could you please provide me a sample if you have done it.
I tried these options but always got errors as
[usp_return [64]] Error: SSIS Error Code DTS_E_OLEDBERROR. An OLE DB error has occurred. Error code: 0x80040E55.An OLE DB record is available. Source:
"Microsoft SQL Server Native Client 10.0" Hresult: 0x80040E55 Description: "Column does not exist.".
[SSIS.Pipeline] Error: SSIS Error Code DTS_E_PRIMEOUTPUTFAILED. The PrimeOutput method on component "usp_return" (64) returned error code 0xC0202009. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning
of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing. There may be error messages posted before this with more information about the failure.
~ Thank you so much
Regards, Avik M.

Oracle XML functions return tags for null columns.

I am currently writing a SOAP Message base on a SQL statement formatted as XML. However, I am having problems with Oracle XML functions not returning tags for null columns as seen in my example below. Is the a way to get Oracle XML functions to return empty tags for null column?
CREATE TABLE FOREXAMPLE_TABLE (COLUMN_1 VARCHAR2 (4000),
COLUMN_2 VARCHAR2 (4000),
COLUMN_3 VARCHAR2 (4000));
INSERT INTO FOREXAMPLE_TABLE (COLUMN_2)
VALUES ('This column is not null');
COMMIT;
SELECT XMLELEMENT ( "soap:Envelope",
XMLATTRIBUTES ( 'http://schemas.xmlsoap.org/soap/envelope/' AS "xmlns:soap"),
XMLELEMENT ( "soap:Body",
XMLATTRIBUTES ( 'http://Custom_Column/types/' AS "xmlns:ns1"),
XMLELEMENT ( "ns1:New_Instance",
XMLELEMENT ( "ns1:Input_XMLDoc",
XMLFOREST(fe.COLUMN_1 as "Column_1",
fe.COLUMN_2 as "Column_2",
fe.COLUMN_3 as "Column_3"))))) as xml
FROM FOREXAMPLE_TABLE fe
The results returned from the select statement.
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body xmlns:ns1="http://Custom_Column/types/"><ns1:New_Instance>
<ns1:Input_XMLDoc><Column_2>This column is not null</Column_2>
</ns1:Input_XMLDoc></ns1:New_Instance></soap:Body></soap:Envelope>
The desired results for the select statement.
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body xmlns:ns1="http://Custom_Column/types/"><ns1:New_Instance>
<ns1:Input_XMLDoc><Column_1></Column_1>
<Column_2>This column is not null</Column_2><Column_3></Column_3>
</ns1:Input_XMLDoc></ns1:New_Instance></soap:Body></soap:Envelope>
jeeman

An alternative may be be to use xmlconcat instead of xmlforest:
Time Start: 30.06.2007 18:52:41
PL/SQL procedure successfully completed.
michaels> select xmlelement
          ("soap:Envelope",
           xmlattributes
                  ('http://schemas.xmlsoap.org/soap/envelope/' as "xmlns:soap"),
           xmlelement
                ("soap:Body",
                 xmlattributes ('http://Custom_Column/types/' as "xmlns:ns1"),
                 xmlelement ("ns1:New_Instance",
                             xmlelement ("ns1:Input_XMLDoc",
                                         xmlconcat (xmlelement("Column_1", fe.column_1),
                                                    xmlelement("Column_2", fe.column_2),
                                                    xmlelement("Column_3", fe.column_3)
          ).extract('.').getstringval() as xml
from (select null column_1, 'This column is not null' column_2,
               null column_3
          from dual) fe
XML
<soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/">
<soap:Body xmlns:ns1="http://Custom_Column/types/">
    <ns1:New_Instance>
      <ns1:Input_XMLDoc>
        <Column_1/>
        <Column_2>This column is not null</Column_2>
        <Column_3/>
      </ns1:Input_XMLDoc>
    </ns1:New_Instance>
</soap:Body>
</soap:Envelope>

Returning a calculation of columns

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