Selecting data from two different tables.

Do we need to use join two tables with primary/foreign key while trying to use select statement for getting data from those to table.? If no who can i go about do it.

872959 wrote:
If i am using From clause to get data from two different tables, is it necessary that both tables have column of identical data in them.In general, they ought to (or you need to join in a third table that tells you how to map rows from one table to rows of the other table).
It is not strictly necessary that there be any join condition between tables. If you don't provide a join condition, Oracle has to do a Cartesian product. That means that if there are n rows in one table and m rows in the other, the result set will have n * m rows. It is very rarely a good idea to write queries that do Cartesian products but it does occasionally happen.
Justin

Similar Messages

Adding two column data from two different tables.

Hi, I have two tables i want to add two column with same id and put it in third table
T1 is
id Value
1 50
2 100
3 500
4 75
T2 is
id Value
3 -20
4 80
5 -30
6 -10
I want the out put as
1 50
2 100
3 480
4 155
5 -30
6 -10
i have written
select a.id,a.value+b.value from t1 a,t2 b where a.id=b.id(+)
this is not giving me the id's from t2.

select id, sum(value) from
(Select id,value from t1
union
select id ,value from t2
)group by id;

Select data from two tables...!

HI Experts...!
i m a beginner user and i want to select data from two tables proj and prps.....using joins.....and internal tables i have written a code...
SELECT prps~pspnr
       prps~objnr
       prps~psphi
       proj~ernam
       proj~erdat
       proj~pspnr
INTO table itab   -
itab is internal table
FROM prps inner join proj
WHERE pspnr in p_no and prpspsphi = projpspnr.
but there is error in from clause ..please help me....
Advance thanx....

Hi,
check the sample code bellow above two reply will solve out your problem but one more extra line in your code pointed out bellow.
TABLES: prps, proj.
TYPES: BEGIN OF ty_test,
        pspnr LIKE prps-pspnr,
        objnr LIKE prps-objnr,
        psphi LIKE prps-psphi,
        ernam LIKE proj-ernam,
        erdat LIKE proj-erdat,
        END OF ty_test.
DATA: itab TYPE STANDARD TABLE OF ty_test WITH HEADER LINE.
SELECT-OPTIONS: p_no FOR prps-pspnr.
SELECT prps~pspnr
        prps~objnr
        prps~psphi
        proj~ernam
        proj~erdat
*        proj~pspnr " No need for this you have selected this in
*     the first line because it is commone so you only need to select from any one
        INTO TABLE itab
FROM prps INNER JOIN proj ON ( prps~pspnr = proj~pspnr )
WHERE prps~pspnr IN p_no.
Best Regards,
Faisal
Edited by: Rob Burbank on Dec 24, 2009 12:24 PM

Is it possible to show data from two different sql tables?

Is it possible to show data from two different sql tables? Either to show combined data by using a join on a foreign key or showing a typical master detail view?
I have one table With data about a house, and another table With URL's to images in the blob. Could these two be combined in the same Gallery?
Best regards Terje F - Norway

Hi Terje,
If you have a unique key, you could use one of the following functions for your scenarios:
If you only have one image per house, you can use LookUp:
http://siena.blob.core.windows.net/beta/ProjectSienaBetaFunctionReference.html#_Toc373745501
If you have multiple images per house, you can use Filter:
http://siena.blob.core.windows.net/beta/ProjectSienaBetaFunctionReference.html#_Toc373745487
Thanks
Robin

Selecting data from two tables

I am trying to select data from two tables. The only problem that I am running into, is that i am only seeing results from my 'uploads' table. there is also a record in documents where user = 1 that should show up. here is my sql:
$userIDNum = 1;
$sql="Select *
from uploads, documents
WHERE uploads.user = documents.user AND uploads.user = $userIDNum
ORDER BY uploads.title ASC, documents.title ASC";

You'll need to explain a little more about your data and what you are trying to accomplish. Your current sql will select all columns from both the uploads and documents tables but only rows where the user id in both tables match, AND the user id equals 1. Is that not what you are seeing? Where's the code that outputs the results?

APEX Application accessing data from two different databases

Hi All,
Currently as we all know that APEX Application resides in database and is connected to the schema of that database.
I want APEX Application to be running and accessing data from two different databases. Elaborating my question,
Currently, my APEX Production Application is connected with XXXX Schema of DB1 Database(Where APEX Resides). Now I want to add some pages into this APEX Application for REPORT Purpose, But I want to connect this REPORT APEX Pages to get data from Different Schema YYYY for Database DB2.
Is it possible to configure this scenario?
The reason for doing this is to avoid the REPORT related (adhoc queries) resource utilization effect on Production DB1 Database.
Thanks
Nil

1. If you do the joining of two or more tables in DB1 then all data is pulled over to DB1 and then the join is executed: so more data over the databaselink and more work for DB1. Better keep the joining stuff where the data resides and just pull exactly that data over that you need.
2. Don't know about your different block sizes. Seems a nice question for one of the other forums (DBA or SQL).
3. I mean create synonyms on DB1 for reports VIEWS in DB2.
Hope all is clear!

How to create a foreign key for the table from two different tables?

Hi All,
I have a three table like below. In the below table SAMPLE_CONS_CHECK and SAMPLE_CONS2_CHECK will be having the primary key for NAME column. The same SAMPLE_CONS3_CHECK table also having the primary key for NAME column and forieign key for SAMPLE_CONS_CHECK and SAMPLE_CONS2_CHECK tables. See the below code 2
code 1:
CREATE TABLE SAMPLE_CONS_CHECK
        (NAME VARCHAR2(10),
        SERIES VARCHAR2(5)
CREATE TABLE SAMPLE_CONS2_CHECK
        (NAME VARCHAR2(5),
         MODEL NUMBER
CREATE TABLE SAMPLE_CONS3_CHECK
        (NAME VARCHAR2(5),
         MODEL_NO NUMBER
        )code 2
alter table SAMPLE_CONS_CHECK
add constraint SAMPLE_CONS_CHECK_pk primary key (NAME)
alter table SAMPLE_CONS2_CHECK
add constraint SAMPLE_CONS2_CHECK_pk primary key (NAME)
alter table SAMPLE_CONS3_CHECK
add constraint SAMPLE_CONS3_CHECK_pk primary key (NAME)
ALTER TABLE SAMPLE_CONS3_CHECK ADD
CONSTRAINT SAMPLE_CONS3_CHECK_FK1 FOREIGN KEY
     NAME
) REFERENCES SAMPLE_CONS_CHECK
    NAME
) ON DELETE CASCADE;
ALTER TABLE SAMPLE_CONS3_CHECK ADD
CONSTRAINT SAMPLE_CONS3_CHECK_FK2 FOREIGN KEY
     NAME
) REFERENCES SAMPLE_CONS2_CHECK
    NAME
) ON DELETE CASCADE;From the above schenario i am able to insert the data to SAMPLE_CONS3_CHECK table. But the parent data is already available in the parent table. The problem is here two different constarints from two different tables. While inserting, it is checking from both the tables whether the parent is exist or not.
How can i solve this problem? Can anyone halp me about this?
Thanks
Edited by: orasuriya on Aug 8, 2009 2:02 AM

Actually the design is completely incorrect.
What you say is
I have
'foo', 'foo series'
'foo','foo model'
'foo',666
By virtue of table3 referring to both table1 and table2.
This means you actually need to have 1 (one) table:
'foo','foo series','foo model', 666
And the 'problem' disappears.
Sybrand Bakker
Senior Oracle DBA

OBIEE 11g - Combine data from two Oracle tables

Good day!
I tried to combine data from two Oracle tables as fact data, but it doesn't work.
My steps: I created SCOTT.EMP2 table from SCOTT.EMP table, update EMPNO and ENAME values of EMP2 table to distinguish data of my tables. Then I imported physical tables DEPT, EMP and EMP2 to BIEE 11g, created joins DEPT-EMP and DEPT-EMP2 in physical diagram. Then I dragged DEPT and EMP tables to BMM, and EMP2 table to EMP as second LTS. In Content tab for EMP and EMP2 I checked "This source should be combined with other sources at this level" checkboxes. Then I renamed logical tables EMP and DEPT to Employees and Departments and dragged them to Presentation area. In Answers I created Analysis with columns DNAME and ENAME.
The problem is that data on results tab is only from one physical table EMP or EMP2 (depending on the order of sources EMP and EMP2 of LT Employees) and not from both.
Can anybody help? Am I missed something?
Al.

Hi Al,
I think you have to define the content of the LTS.
http://download.oracle.com/docs/cd/E12096_01/books/admintool/admintool_BusModSetup16.html
You have to specify the content of the different fragments.
http://download.oracle.com/docs/cd/E12096_01/books/admintool/admintool_SetUpAggNav3.html#wp1005333
Maybe you have to add an additional column 'Source' ('EMP1', 'EMP2')
Good Luck,
Daan Bakboord
http://obibb.wordpress.com

Select data from all the table names in the view

Hi,
"I have some tables with names T_SRI_MMYYYY in my database.
I created a view ,Say "Summary_View" for all the table names
with "T_SRI_%".
Now i want to select data from all the tables in the view
Summary_View.
How can i do that ? Please throw some light on the same?
Thanks and Regards
Srinivas Chebolu

Srinivas,
There are a couple of things that I am unsure of here.
Firstly, does your view definition say something like ...
Select ...
From "T_SRI_%"
If so, it is not valid. Oracle won't allow this.
The second thing is that your naming convention for the
tables suggests to me that each table is the same except
that they store data for different time periods. This would be
a very bad design methodology. You should have a single
table with an extra column to state what period is referred to,
although you can partition it into segments for each period if
appropriate.
Apologies if i am misinterpreting your question, but perhaps
you could post your view definition and table definitions
here.

Sum two different columns from two different tables

Can you select and sum two different columns, from two different tables in the same sql statement?
i.e.
table1
Item----OnHand_Qty
A--------10
A--------15
B--------10
B--------10
C--------20
table2
Item----Trx_Qty
A--------2
A--------4
A--------6
B--------1
B--------1
C--------4
I'm looking for the following results from a query
Item----Sum(Onhand_Qty)---Sum(Trx_Qty)
A--------25

Like this?
SQL> create table table1 (item,onhand_qty)
2 as
3 select 'A', 10 from dual union all
4 select 'A', 15 from dual union all
5 select 'B', 10 from dual union all
6 select 'B', 10 from dual union all
7 select 'C', 20 from dual union all
8 select 'D', 30 from dual
9 /
Tabel is aangemaakt.
SQL> create table table2 (item, trx_qty)
2 as
3 select 'A', 2 from dual union all
4 select 'A', 4 from dual union all
5 select 'A', 6 from dual union all
6 select 'B', 1 from dual union all
7 select 'B', 1 from dual union all
8 select 'C', 4 from dual union all
9 select 'E', 3 from dual
10 /
Tabel is aangemaakt.
SQL> select nvl(t1.item,t2.item) item
2       , t1.sum_onhand_qty
3       , t2.sum_trx_qty
4    from ( select item, sum(onhand_qty) sum_onhand_qty
5             from table1
6            group by item
7         ) t1
8         full outer join
9         ( select item, sum(trx_qty) sum_trx_qty
10             from table2
11            group by item
12         ) t2
13         on (t1.item = t2.item)
14 /
I SUM_ONHAND_QTY SUM_TRX_QTY
A             25          12
B             20           2
C             20           4
E                          3
D             30
5 rijen zijn geselecteerd.Regards,
Rob.

Select Data from 2 intern tables

Hi Experts,
how I can select Data from 2 intern Tables into another intern table?
For Example:
My Result Table has the fields: mandt, user, ID, ID_Name.
My select table no. 1 has the fields mandt, XYZ (like A_Name), ID, ID_Name, ...
My select table no. 2 has the fields mandt, A_Name, User, ...
I want to search for all entries in select table no. 1 and 2. where are a_name have the same worth.
How I can select my Dates?
Regards,
Mike

hii
you can do it by using for all entries and with READ statement ..do like follow code
IF i_marc[] IS NOT INITIAL.
    SELECT matnr                       " Material Number
           werks                       " Plants
           lgort                       " Storage Location
      FROM mard
      INTO TABLE i_mard
       FOR ALL ENTRIES IN i_marc
     WHERE matnr EQ i_marc-matnr
       AND werks EQ i_marc-werks
       AND lgort IN s_lgort.
ENDIF.                               " IF i_mara[] IS NOT INITIAL
IF sy-subrc EQ 0.
    LOOP AT i_output INTO wa_output.
      READ TABLE i_mard INTO wa_mard WITH KEY matnr = wa_output-matnr.
      wa_output-lgort = wa_mard-lgort.
      MODIFY i_output FROM wa_output.
      CLEAR wa_output.
    ENDLOOP.                           " LOOP AT i_output
ENDIF.                               " IF sy-subrc EQ 0
regards
twinkal

Differentiating Master Data from two different source systems

Friends,
i have used standard InfoObjects that provide master data for two InfoCubes which take data from two different source systems. Now the some of the master data is identical in both the source systems (example: 10 stands for "Industrial" in one whereas 10 stands for "Agricultural" in the other). What do i do so that the system(BW) differentiates the two.
Thanks in advance for all the help.
Mike

I tried to include the 0SOURSYSTEM in the compounding of this InfoObject (for master data) but it gives me a list of other objects that use this InfoObject as a reference characteristic and also says that this InfoObject is used in a ODS and data needs to be emptied in the ODS before activating this InfoObject. Please let me know if there is any way out of it.
Thanks
Mike

SELECT data from two databases

I have two databases that I need to select data from in a
single SELECT. Using DWs Advanced window for creating the select I
don't see any way to select more than 1 Connection. Both databases
have unique user and passwords but reside on the same server. Any
idea how I can write a single SELECT to get data from both dbs. I
assumed it would be similar to selecting data from multiple tables
within the same db but the connection part is stumping me. Any
ideas would be greatly appreciated.

TouchstonePress wrote:
> Page 48, Developing a Web Database Application . . .
speaks about making a
> database with two related TABLES each with the same
PRIMARY KEY column with
> which to identify a customer using their unique number.
That's the basic technique for joining two tables in the same
database.
The original poster has tables in different databases that
have
different user accounts and passwords.
Although it's possible to join two databases, you cannot do
it unless
you have one user account with the same privileges on both
databases.
David Powers, Adobe Community Expert
Author, "The Essential Guide to Dreamweaver CS3" (friends of
ED)
Author, "PHP Solutions" (friends of ED)
http://foundationphp.com/

Working with data from two separate tables

In a report I'm building, I have two tables: "Registration" and "SpecialDates".
In the Registration table has client info specific to an account number. Each account number has a different billing cycle.. either Cycle 1, Cycle 2, or Cycle 3. This is listed for the account number as {Registration.Cyle}. In the SpecialDates table I have three different dates listed for each cycle. So this table looks something like this:
fldCycle          fldPastDueDate
1                     01/11/2010
2                     12/15/2009
3                     1/20/2010
The problem I'm having is I can't link {SpecialDates.fldCycle} to {Registration.Cycle}. I have to somehow make the date from the SpecialDates table show up on the report depending on the value of {Registration.Cycle}. Does anyone have any ideas on how to do this?
Edited by: MarcieHennessy on Jan 27, 2010 7:26 PM

Then I would create a custom table with the Add Command in Data Expert with the following query:
SELECT Field1, Field2, Field3, cast (fldCycle as char(10)) as fldCycle, Field4, Field5, etc
FROM SPECIALDATES
Where you list all the fields from the table you will need in the report, with the link field converted to a string. Then replace the SPECIALDATES table in your linking with the new custom table . Now when you link from REGISTRATION to the new custom table.
Fuskie
Who notes you can rename the custom table to a more recognizable name...

How to fill the data of two different tables into one?

Hi Experts,
I have two tables named CDHDR and CDSHW(structure). I have extracted the data from these two tables through two function modules named CHANGEDDOCUMENT_HEADER and CHANGEDOCUMENT_POSITION. Now I have the data in to different tables.
These two tables neither has relationship with each other through any field nor have any field which exist in both. Can anyone tell me in this case what should be the process to take the data of both the tables into one table. How can I match the record of one table to another?
thanks a ton in advance.
Edited by: Moni Bindal on Apr 28, 2008 4:16 PM
Edited by: Alvaro Tejada Galindo on Apr 28, 2008 1:42 PM

Hye Bindal,
without a relation, it is not possible to club the data of 2 internal tables. More over it depends on the requirement as to y u should club to non related quantities in an internal table.
if you wish to do so, one thing is it has internal table which includes the strucute of the 2.
data: begin of ty_out,
          first type first_structure,
          second type second_structure,
         end of ty_out.
data: itab type standard table of ty_out.
data: wa type ty_out.
loop into it1 into wa1.
move corresponding wa to wa1.
append wa to itab.
endloop.
loop into it2 into wa2.
move corresponding wa to wa2.
append wa to itab.
endloop.
now the internal table itab will have all the contents of it1 and it2.
<REMOVED BY MODERATOR>
Thanks,
Imran.
Edited by: Alvaro Tejada Galindo on Apr 28, 2008 1:43 PM

Selecting data from two different tables.

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