Outer Join on 10 tables

Hi:
I am attempting to create a view using an outer join on 10 different Oracle tables and I can't seem to get the syntax right because not all of the information that should appear in the VIEW is appearing. Below is the syntax for the VIEW:
CREATE VIEW dwgSearchEngineResults AS
   SELECT Drawing.dwgID, Drawing.PMDwgNum, Drawing.Type, Drawing.Title, Drawing.dwgSize,
          Drawing.projectNum, Panel_Number.panlnumID, Panel_Number.panlNumber, Discipline.disciplineID,
          Discipline.drawingType, Area.areaID, Area.areaNum, Asset_Number.assetnumID, Asset_Number.assetNumber,
          Vendor.vendorID, Vendor.Name
   FROM AJM.Drawing, AJM.Discipline, AJM.Panel_Number, AJM.Dwg_Panel_Number, AJM.Area,
        AJM.Dwg_Area, AJM.Asset_Number, AJM.Dwg_Asset_Number, AJM.Vendor, AJM.Vendor_Drawing
   WHERE Drawing.disciplineID = Discipline.disciplineID(+) AND Drawing.dwgID = Dwg_Panel_Number.dwgID(+)
         AND Dwg_Panel_Number.panlNumID = Panel_Number.panlNumID(+) AND Drawing.dwgID = Dwg_Area.dwgID(+)
         AND Dwg_Area.areaID = Area.areaID(+) AND Drawing.dwgID = Dwg_Asset_Number.dwgID(+)
         AND Dwg_Asset_Number.assetnumID = Asset_Number.assetnumID(+) AND Drawing.dwgID = Vendor_Drawing.dwgID(+)
         AND Vendor_Drawing.vendorID = Vendor.vendorID(+);I attempted to Bold the main tables for you, but the tags don't seem to be working. So the tables that you see in the FROM clause with the tags are the main tables and the rest are bridge tables that take away the many - to - many relationship between the main tables.
As I said earlier, the outer join isn't working right because for example, I know for sure that there area 3 Vendor names in the Vendor table. However, when I select the vendor name from the VIEW, none of the names appear. It should be noted that the none of the dwgID's are in the Vendor_Drawing table since none of the drawings are Vendor drawings. Is that why the 3 vendor names don't appear in the VIEW? Also, I know there are 2 area numbers in the Area table. Again, when I select the area number from the VIEW, I only get 1 area number that displays, and that's the one that the dwgID and the areaID match in the Dwg_Area table.
This is a search engine that I'm developing and I thought it would be easier to write a VIEW since the users can search for different parameters from either of these tables. I know this is pretty complex, but can someone please help me.

Oops, that was meant to be a cross-post notification...
Cross post:
http://forum.java.sun.com/thread.jsp?forum=48&thread=502319&start=0&range=15#2376543

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Left outer join using multiple table

Hi,
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Why don't you use the standard logical database PNPCE and then Provide statement?

Maximum number of tables that can be outer joined with one table in a query

Hi All,
Iam new to sql, so can you please let me know What is the maximum number of tables that can be outer joined with one table in a query?
Thanks,
Srini

srinu2 wrote:
Iam new to sql, so can you please let me know What is the maximum number of tables that can be outer joined with one table in a query?
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How to use outer join on 3 tables

how to use outer join on 3 tables
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lips-vbeln = vbrp-vgbel

refer following querry
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           a~ord42
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Oracle outer join on multiple tables throws error

Hi ,
We are using ansi joins with outer joins on multiple tables in oracle 9i.
Now these queries have to be used in Oracle8i.
Since Oracle8i does not support ansi sql we are replacing the ansi sql queries with the oracle joins.
On trying the same we found that the following query
select *from tab1 a, tab2 b, tab3 c where a.c1 = b.col1(+) and c.c2 = b.col2 (+)
throws the error
ORA-01417: a table may be outer joined to at most one other table.
Is there a way to simulate this query without using the outer joins on multiple tables?
thanks

Try writing the query in this form:
select * from
(select t1.col1, t1.col2
from schema.table1 t1, schema.table2 t2
where t1.col1 = t2.col1(+)) t4,
schema.table3 t3 where t4.col2 = t3.col2(+)
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Case statement resulting into Left outer join with other tables

Hi All ,
I am facing a stuation where a Case statement on one of the logical columns in Answers is resulting into a left outer join with a table in the query.
If we remove the case stmt, the table is not being acessed.
The case stmt is a simple one and no other logical column is being accessed in the case stmt.
Please advice .
Thanks.

Hi Sai,
No ..we dont have any left outer join ...its just that I am selecting measure from F1 which has a confimred dimension D1 with F2.Now when I dont have case stmt on measure from F1(Case stmt is something like : CASE WHEN "- P table"."P Column" = 'Y' THEN 'Right' ELSE 'Wrong' END), then it doesnt query F2.
However as soon as I introduce the case stmt ,the query creates a left outer join with F2.
Thanks.

Outer Join for 2 Tables?

Hi,
i have 3 Tables, one is the "main" table.
Table1
Col1
Col2
Col3
Table2
Col2
Col4
Col5
Table3
Col4
Col6
Now i want all hits from Table 1, all outer join hits from table 2 and the regarding rows from table 3.
The join from Table1 to Table2 is no problem, but how to add table3?
SELECT *
    FROM table1 AS t1
          LEFT OUTER JOIN table2 AS t2
                ON t2col2 = t1col2
   INTO CORRESPONDING FIELDS OF TABLE      result
    WHERE t1~col1 IN so_col1.

Hi,
a right table in an outer join cannot become a part of an inner join or an outer join. So you will have to use some other technique.
meaing table1 connects to table2 with an outer join resulting in all rows table1 and cooresponding if existing from table2, now table2 is the right table it cannot make a join with table3. inner or outer.
regards,
Khusro Habib

Left Outer Join on same table clarification

HI,
I have a table that gets populated from 3<sup>rd</sup> party system. We don’t have control over it. So, the table has master record (master) and children. Master type is 78 and children’s type is 64. So, it looks like this. In the 3<sup>rd</sup>
party system, if Master transaction gets cancelled, it is recorded as type 178. If child is cancelled, then it is 164. Once the child is cancelled and created again using one process then newly created transaction will have 65 as type. Same thing with Master
cancelled transaction also. It will be 79. So, to summarize:
Master:
Brand New Transaction type = 78
Cancelled Transaction type = 178
Cancelled with creation transaction type = 79
Child:
Brand New Transaction type = 64
Cancelled Transaction type = 164
Cancelled with creation transaction type = 65
I don’t have to bother about master records. I need to focus on only children for my query.
ID
TxnID
Master
Type
TDate
Location
193075
211554
211543
64
20140805
ABC
193076
211555
211543
64
20140805
NBC
193077
211556
211543
64
20140805
ABC
193080
211559
211558
64
20140805
ABC
193081
211562
211561
64
20140805
ABC
193082
211565
211564
64
20140805
CBC
193083
211565
211564
164
20140805
CBC
193084
211566
211564
65
20140805
AZC
--drop
table #Transactions
CREATE
TABLE #Transactions
ID
int,
TxnID
int,
mstTicket
int,
Typecode
int,
Tdate
datetime,
Location
varchar(10)
select
* from
#Transactions
Insert
into #Transactions
(ID,
TxnID,
mstTicket,Typecode,Tdate,Location)
Select 193075, 211554,211543,64,'2014-08-05','ABC'
UNION ALL
Select 193076, 211555,211543, 64,
'2014-08-05',
'NBC' UNION ALL
Select 193077, 211556, 211543, 64,
'2014-08-05',
'ABC' UNION
ALL
Select 193080, 211559, 211558, 64,
'2014-08-05',
'ABC' UNION
ALL
Select 193081, 211562, 211561, 64,
'2014-08-05',
'ABC' UNION
ALL
Select 193082, 211565, 211564, 64,
'2014-08-05',
'CBC' UNION
ALL
Select 193083, 211565, 211564, 164,
'2014-08-05',
'CBC' UNION
ALL
Select 193084, 211566, 211564, 65,
'2014-08-05',
'AZC'
select
T.TxnID,
T.TypeCode,
T.Location,
TL.TxnID
From
#Transactions T
Left Outer
JOIN #Transactions
TL ON
TL.TxnID
= T.TxnID
and TL.TypeCode
= 164
select
T.TxnID,
T.TypeCode,
T.Location,
TL.TxnID
From
#Transactions T
Left Outer
JOIN #Transactions
TL ON
TL.TxnID
= T.TxnID
and TL.TypeCode
= 164
Where
T.typecode
in (64, 65)
I need a clarification regarding left Outer Join.
In the first left outer join query both 64 and 164 both have TL.TxnID populated. Why is that?. What I understand from
left outer join is that ‘Returns all the rows’ from left table and only matching data from right table.
Here, matching row from right table is 211565 and 164 record (id 193083). So, only it should have TxnID populated. But row 211565 and 64 has TL.txnID getting populated (ID 193082).
Why is it? Am I not understanding left out join properly?
Thanks,

Thank you Shailesh. I understood what join does in left outer join. I was thinking
Left Outer JOIN #Transactions TL ON TL.TxnID = T.TxnID and TL.TypeCode = 164 is same as
Left Outer JOIN #Transactions TL ON TL.TxnID = T.TxnID and TL.TypeCode = T.TypeCode
and TL.TypeCode = 164
#Transactions
T
Left
Outer
JOIN
#Transactions
TL
ON
TL.TxnID
=
T.TxnID
and
TL.TypeCode
= 164
Where
T.typecode
in
(64,
65)

How to use outer join on 2 tables with Oracle 8i

Could anyone tell me the Oracle 8i syntax equivalent to :
select user.name, city.adress, contry.name
from user
left outer join city on (user.rCity = city.code)
left outer join country on (user.rCountry = country.code)
I tried following :
select user.name, city.adress, contry.name
from user, city, contry
where user.rCity (+) = city.code
and user.rCountry (+) = country.code
but displayed following error :
ORA-01417: a table may be outer joined to at most one other table
Thank you

Logically I would expect a user to have a city and a country, or not. In that case the outer join should be on the other tables. Making your query:
select user.name, city.adress, country.name
from user, city, country
where user.rCity = city.code (+)
and user.rCountry = country.code (+);

How to use outer join in Target table

hi all:
how to use outer joing and trunc in target table?

Good morning,
Can you be more specific?
What do you want to join, what needs to be truncated, what's the Loading Type of your target table-object, etc.
In general the following applies.
An outer join is specified on the JOIN operator, under Operator Properties you can specify the Join Condition, for example:
tab1.uk_col1 = tab2.uk_col1(+)
and
tab1.uk_col2 = tab2.uk_col2(+)Truncating a table in a mapping can only be done in combination with inserting the dataset, setting the loading type of a table to TRUNCATE/INSERT.
Apart from that there is a predefined OWB transformation called WB_TRUNCATE_TABLE, this can also be used to truncate a table.
Cheers, Patrick

Outer join with nested tables

I am dealing with a nested table (I simplified the case
for purpose of posting):
CREATE TABLE boris_main_tab (
IND_SSN          VARCHAR2(9) PRIMARY KEY,
children          B_CHILDREN_TBL,
) nested table children stored as....
where B_CHILDREN_TBL is defined like this:
create or replace type b_children_type as object (
     child_ssn               VARCHAR2(9),
     child_first_name          VARCHAR2(20),
     child_last_name          VARCHAR2(20),
     child_dob               date
create or replace type b_children_tbl as table of b_children_type;
if I want to display person's ssn along with his/her children information I do like this:
SELECT m.ind_ssn, c.child_ssn, c.child_first_name
FROM boris_main_tab m,
TABLE(m.children) c
This is a statement I can find everywhere. But there is a caveat here, they
forgot to mention. This is really an inner join, so I don't get childless
people. Can you, guys, help me with the outer join syntax?
I mean, of course, I found the obvious solution to make this inner join
into a view and then join it with the boris_main_tab again this time using the
regular outer join syntax. But it seems to me there has to be something simplier than that.
But I can't find it. It really hurting me, since I have a few nested table
columsn and people want to see the records where I need to mention a few of
them, sort of like
from boris_main_tab m, TABLE(m.children) c, TABLE(m.spouses) s
where c.child_last_name <> m.spouse.last_name
in cases like this the fact that EACH of these joins is inner join really
hurts the logic.
Respectfully,
Boris

Hi Borris,
Found the following in the Oracle Documentation under: Oracle8i Application Developer's Guide - Object-Relational Features Release 2 (8.1.6)
2 Managing Oracle Objects / Using Collections / Collection Unnesting
URL: http://www.znow.com/sales/oracle/appdev.816/a76976/adobjmng.htm#1002885
Oracle8i also supports the following syntax to produce outer-join results:
SELECT d.*, e.* FROM depts d, TABLE(d.emps)(+) e;
The (+) indicates that the dependent join between DEPTS and D.EMPS should be NULL-augmented. That is, there > will be rows of DEPTS in the output for which D.EMPS is NULL or empty, with NULL values for columns
corresponding to D.EMPS.

Outer join between logical tables

Hello,
This question is likely to be asked many times, but I failed to find the proper thread in the forum.
Assume there are 2 logical tables "Fact" and "Dim".
"Fact" has 1 LTS which consists of physical tables F, FX1, FX2 which are inner joined.
"Dim" has 1 LTS which consists of physical tables D, DX1, DX2 which are inner joined.
F and D tables are also joined together on physical layer.
I define left outer join between "Fact" and "Dim" on logical layer.
I create a request in Answers, querying columns from "Fact" and "Dim" which map to physical tables F and D only.
I expect OBIEE to build SQL query which uses F and D tables only, outer joined.
Instead of that all the physical tables used for logical tables "Fact" and "Dim" are joined together in a form like:
SELECT F.col, D.col
FROM (F inner join FX1 inner join FX2) left outer join (D inner join DX1 inner join DX2)
Is there any way to avoid this behavior or build data model in different way?
Thank you!

Hi Alex,
In BI Applications you never have a null in a facts foreign key to the dimension. Instead there is always a zero row wi record inserted with 'Unspecified' in all the columns. When the fact table is populated in the ETL, if the fact record doesn't have a corresponding dimension record the WID is poulated with zero.
This removes the problems with outer joins and helps considerably with performance.
This could be one practice you take from BI Apps and put into your own ETL's and data model.
Regards
Robin

Outer join on multiple tables

Hi All,
I need to create multiple outer join in Discoverer.
My requirements is like this
I have a report where in I show the sales of components. I have Year as page item in Discoverer cross tab.
I have 2 years in my year table, 1999 and 2000
in the components table I have 3 components, X, Y, Z
In the fact table, I have 5 records as below
YEAR     PRODUCT     AMOUNT
1999     X     100
1999     Y     200
1999     Z     300
2000     X     400
2000     Y     500
Now with this data, when I create a cross tab with year as page item, I get the following output on selecting 1999 as year in page item,
component     Amount SUM
X     $100
Y     $200
Z     $300
similarly when I get report for 2000 it will be as follows
component     Amount SUM
X     $400
Y     $500
Now I want some way to get a report as below for 2000 and similar cases
component     Amount SUM
X     400
Y     500
Z     0
Can some body help me??
Thanks,

Hi Mrutyunjay,
If you keep the query as described by Csaba but leave out time_period.year from the SELECT and GROUP BY list. In addition, replace the SUM(...) function with the following expression.
SUM (CASE WHEN <condition> THEN fact_tab.amount ELSE 0 END)
Where <condition> will be along the lines of 'time_period.year = 1999'.
This will give you the result you require.
Do be aware that this will force Oracle to do a full scan on the fact_tab table. This may render the solution unworkable.
Cheers,
denty.

Left Outer Joining multiple tables to one source table FAILS with VLD-1511

Hi all,
Is it me, or is OWB unable to handle left outer joining 1 source table to multiple other tables?
I want to load a fact table so I have 1 source table with measures. This table must be outer joined to some dimensions that have their FK in the fact table.
The SQL statement would look like this (and is perfectly valid):
select ...
from input, dim1, dim2
where input.c1 = dim1.c1(+)
and input.c2 = dim2.c2(+);
I put the where clause in the joiner operator and validate, but that gives me message VLD-1511: A table may be outer joined to at most one other table.
Even splitting this up into one outer join per joiner still gives this message.
A search and look around on the forum and on metalink shows there are related issues (like bug 3334035). Seemingly creating a view is the work-around to use.....? (ie downgrading owb to a simple gui tool) }-;
Have other people experienced this problem of not being able to outer join one input table to multiple other tables?
Thanks,
Ed

I have had some feedback from Oracle. It turns out this has to do with 2 issues. Below I have pasted the text that Support gave me:
<---------- START QUOTE ---------->
RESEARCH
=========
Bug 3437036 KEY LOOKUP DOES NOT DETECT ORA-1417 IN VALIDATE/GENERATE STEP
Unpublished Bug 4211684 FORWARD PORT OF BUG 3437036
shows:
Some more development has been completed when this bug is fixed in Paris.
The following are the details:
1. If the join condition contains a full outer join such as
tab1.c (+) = tab2.c (+) and tab2.c (+) = tab3.c
then the new validations implemented for this bug do not apply since
in OWB, full outer join triggers generation of joins in ANSI syntax.
ANSI syntax does not have the original problem the base bug of this
bug reported.
2. If the join condition does not contain any full outer join condition,
then the join is generated in Oracle join syntax, which is subject two
several restrictions. The fix to this bug check two of the restrictions.
3. The first restriction in Oracle syntax is that the outer join operator
"(+)" can only directly be attached to a column name. If you attach it
to an expression, such as the following:
(tab1.c + 1) (+) = tab2.c
Then there will be an ORA-936 error at the time of mapping deployment.
For this case, I have added a validation message VLD-1512 to error out
this situation.
4. The second restriction in Oracle syntax is that a table can only be
outer joined to exactly one other table.
For example, this is an invalid join in Oracle syntax:
tab1.c (+) = tab2.c and tab1.d (+) = tab3.d
because tab1 is left outer joined to tab2 and tab3.
But note that the following is still valid in Oracle syntax:
tab1.c (+) = tab2.c and tab1.d = tab3.d (+)
because tab1 is left outer joined to tab2 and right outer joined to tab3.
So this latter case does not violate the restriction that "same oj" to
more than 1 table is not allowed.
If same oj to more than 1 table is specified in a join condition,
VLD-1511 will be issued, and the map is made invalid.
<---------- END QUOTE ---------->
OWB does a partial validation, ie not all access paths are (can be) checked. A full check is only done by the database itself. So some scenarios (like checking whether multiple tables are outer joined the correct way) are not checked, and in this case are flagged with an error (even though it is actually a correct scenario).
Seemingly this was not flagged with an error in earlier versions of OWB, so beware, OWB behaviour may change when upgrading...
Alternative solutions are (1) using key lookups, (2) using a view with all outer joins in there, (3) using intermediate result tables between the joins.
Hope this info helps some people prevent spending too much time on a false error message,
Ed

Outer join two tables with two keys

Hi,
I have a question regard outer join,
I have table A (Aid, ADesc), Table B(Bid, Bdesc), and Table C (Aid, Bid, Cdesc)
There is data in Table A and B, but Table C is empty
I want to outer join C with A and B with below query
select ADesc,Bdesc, Cdest
from A, B, C
where A.Aid=C.Aid(+) and B.Bid(+)=C.Bid
and A.Aid='XXX' and B.Bid(+)='ZZZ'
The query result show only data in column Adesc , but column BDesc is empty even though there are some data in table B.
How should the query been modified to correctly show ADESC and Bdesc.
Thanks
Vincent

Guess the below should work:
Case when records are available in Table C:
with a as
(select 'XXX' aid, 'adesc' adesc from dual),
b as
(select 'ZZZ' bid, 'bdesc' bdesc from dual),
c as
(select 'XXX' aid, 'ZZZ' bid, 'cdest' cdest from dual where 1 = 1)
select ADesc,Bdesc, C1.Cdest
from
A LEFT OUTER JOIN C c1 ON (A.AID = C1.AID AND A.AID = 'XXX'),
B LEFT OUTER JOIN C C2 ON (B.BID = C2.BID AND B.BID = 'ZZZ');
Output:
"ADESC"     "BDESC"     "CDEST"
"adesc"     "bdesc"     "cdest"Case when table C is empty:
with a as
(select 'XXX' aid, 'adesc' adesc from dual),
b as
(select 'ZZZ' bid, 'bdesc' bdesc from dual),
c as
(select 'XXX' aid, 'ZZZ' bid, 'cdest' cdest from dual where 1 = 2)
select ADesc,Bdesc, C1.Cdest
from
A LEFT OUTER JOIN C c1 ON (A.AID = C1.AID AND A.AID = 'XXX'),
B LEFT OUTER JOIN C C2 ON (B.BID = C2.BID AND B.BID = 'ZZZ');
"ADESC"     "BDESC"     "CDEST"
"adesc"     "bdesc"     ""

Outer Join on 10 tables

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