Are Multiproviders union or Full outer Joins of their InfoProviders?
I was modeling an heterogeneous Multiprovider and thinking about the expected result set of my query. Looking at SAP note 379736, we can see that's really doing a full outer join sql operation, not an Union. Am I thinking right about that?
Regards,
André Rodrigues
Edited by: André Rodrigues on Aug 3, 2011 3:03 PM
Yes you're right, this is not really an union nor a full outer join but sometimes simplifying things can make them more understandable...
UNION=
Combines the results of two or more queries into a single result set that includes all the rows that belong to all queries in the union. The UNION operation is different from using joins that combine columns from two tables.
The following are basic rules for combining the result sets of two queries by using UNION:
The number and the order of the columns must be the same in all queries.
The data types must be compatible.
FULL OUTER JOIN=
Specifies that a row from either the left or right table that does not meet the join condition is included in the result set, and output columns that correspond to the other table are set to NULL. This is in addition to all rows typically returned by the INNER JOIN.
Quote from http://msdn.microsoft.com/en-us/library
Similar Messages
-
Repalcing UNIOn with full outer Join
I have a query wihch looks like ,
select colA,colB ,colC, coldD from A,B,C,D
where (some join conditions)
union
select colA,colB ,colC, NULL from A,B,C
where (some join conditions)
This query is posing us serious performance issues and we want to tune the query.
SO to remove the UNION operator we want to use FULL JOIN.
Can you please let us know how to frame the full outer join in the above query,so that the result set intact.
Thanks MuchHere goes my first query that uses UNION :
SELECT from_it.seq_routing,
from_it.milestone_routing_dt,
from_it.milestone_type_desc,
to_it.seq_routing,
to_it.milestone_routing_dt,
to_it.milestone_type_desc,
to_it.delay_flag,
to_it.acceptable_delay_flag,
TAB_A.calendar_minutes, TAB_A.business_minutes,
TAB_A.due_date, TAB_A.late_minutes,
TAB_A.delay_concat_comments,TAB_C.TAB_C_key,
TAB_C.pcd,TAB_C.ssn,
mmp.MEASURE_NAME,
api.METRICS_PARAMETER_KEY,
api.METRICS_PARAMETER_PRODUCT_KEY,
crt.JUSTIFICATION_CD,
crt.JUSTIFICATION_DESC,
crt.ROUTING_USER_SITE_DESC
FROM TAB_A, TAB_B from_it, TAB_B to_it,
TAB_C, TAB_E,TAB_D mmp,TAB_F api, TAB_G crt
WHERE from_it.TAB_B_key =
TAB_A.from_TAB_B_key
AND to_it.TAB_B_key =
TAB_A.to_TAB_B_key
ANDTAB_C.TAB_C_key = from_it.TAB_C_key
andTAB_C.TAB_C_key = to_it.TAB_C_key
and TAB_E.pck =crt.pck
and to_it.SEQ_ROUTING =crt.SEQ_ROUTING
and TAB_E.pcd =TAB_C.pcd
and TAB_E.ssn =TAB_C.ssn
andTAB_C.END_DT = TO_DATE('12/31/9999', 'MM/DD/YYYY')
and TAB_A.METRICS_MEASURE_KEY =mmp.METRICS_MEASURE_KEY
andapi.END_DT = TO_DATE('12/31/9999', 'MM/DD/YYYY')
andTAB_C.TAB_C_key =api.TAB_C_KEY
andapi.PARAMETER_TYPE = 'IN'
and TAB_A.end_dt = TO_DATE('12/31/9999', 'MM/DD/YYYY')
and CRT.end_dt = TO_DATE('12/31/9999', 'MM/DD/YYYY')
UNION
SELECT from_it.seq_routing,
from_it.milestone_routing_dt,
from_it.milestone_type_desc,
to_it.seq_routing,
to_it.milestone_routing_dt,
to_it.milestone_type_desc,
to_it.delay_flag,
to_it.acceptable_delay_flag,
TAB_A.calendar_minutes, TAB_A.business_minutes,
TAB_A.due_date, TAB_A.late_minutes,
TAB_A.delay_concat_comments,TAB_C.TAB_C_key,
TAB_C.pcd,TAB_C.ssn,
mmp.MEASURE_NAME,
api.METRICS_PARAMETER_KEY,
api.METRICS_PARAMETER_PRODUCT_KEY,
NULL, NULL, NULL
FROM TAB_A, TAB_B from_it, TAB_B to_it,
TAB_C, TAB_E,TAB_D mmp,TAB_F api
WHERE from_it.TAB_B_key =
TAB_A.from_TAB_B_key
AND to_it.TAB_B_key =
TAB_A.to_TAB_B_key
ANDTAB_C.TAB_C_key = from_it.TAB_C_key
andTAB_C.TAB_C_key = to_it.TAB_C_key
and TAB_E.pcd =TAB_C.pcd
and TAB_E.ssn =TAB_C.ssn
andTAB_C.END_DT = TO_DATE('12/31/9999', 'MM/DD/YYYY')
and TAB_A.METRICS_MEASURE_KEY =mmp.METRICS_MEASURE_KEY
andapi.END_DT = TO_DATE('12/31/9999', 'MM/DD/YYYY')
andTAB_C.TAB_C_key =api.TAB_C_KEY
andapi.PARAMETER_TYPE = 'IN'
and to_it.SEQ_ROUTING is null
and TAB_A.end_dt = TO_DATE('12/31/9999', 'MM/DD/YYYY')
And the one with OUTER JOIN used :
SELECT from_it.seq_routing,
from_it.milestone_routing_dt,
from_it.milestone_type_desc,
to_it.seq_routing,
to_it.milestone_routing_dt,
to_it.milestone_type_desc,
to_it.delay_flag,
to_it.acceptable_delay_flag,
TAB_A.calendar_minutes, TAB_A.business_minutes,
TAB_A.due_date, TAB_A.late_minutes,
TAB_A.delay_concat_comments,TAB_C.TAB_C_key,
TAB_C.pcd,TAB_C.ssn,
mmp.MEASURE_NAME,
api.METRICS_PARAMETER_KEY,
api.METRICS_PARAMETER_PRODUCT_KEY,
crt.JUSTIFICATION_CD,
crt.JUSTIFICATION_DESC,
crt.ROUTING_USER_SITE_DESC
FROM TAB_A JOIN
TAB_B from_it
on from_it.TAB_B_key =
TAB_A.from_TAB_B_key
and TAB_A.end_dt = TO_DATE('12/31/9999', 'MM/DD/YYYY')
JOIN
TAB_B to_it
ON to_it.TAB_B_key =
TAB_A.to_TAB_B_key
JOINTAB_C
ONTAB_C.TAB_C_key = from_it.TAB_C_key
ANDTAB_C.TAB_C_key = to_it.TAB_C_key
andTAB_C.END_DT = TO_DATE('12/31/9999', 'MM/DD/YYYY')
JOINTAB_D mmp
ON TAB_A.METRICS_MEASURE_KEY =mmp.METRICS_MEASURE_KEY
JOIN TAB_E
ON TAB_E.pcd =TAB_C.pcd
and TAB_E.ssn =TAB_C.ssn
-- and TAB_E.ssn = 'PFEARG'
JOINTAB_F api
ON TAB_C.TAB_C_key =api.TAB_C_KEY
andapi.PARAMETER_TYPE = 'IN'
andapi.END_DT = TO_DATE('12/31/9999', 'MM/DD/YYYY')
LEFT -
Diff "full outer join" va. "(+)" SELECT syntax ?
As far as I know there are two ways of defining an outer join:
Select ... from tab1 t1 full outer join tab2 t2 on t1.id =t2.id;
or:
Select ... from tab1 t1, tab2 t2 where t1.id = t2.id(+)
Are they absolutely equivialent?
Which are the most common one?
Which are used on other databases (DB2, MySQL) as well?
Can I put an additional WHERE clause at the end in the first statement:
Select ... from tab1 t1 full outer join tab2 t2 on t1.id =t2.id WHERE .....;Select ... from tab1 t1 full outer join tab2 t2 on t1.id =t2.id;This is FULL OUTER JOIN
Select ... from tab1 t1, tab2 t2 where t1.id = t2.id(+)This is LEFT OUTER JOIN.
They are entirely different.
FULL OUTER JOIN - Gets all the rows from tab1 and tab2
LEFT OUTER JOIN - Gets all the rows from tab1 and only the row that matches with join condition from tab2.
Here is a simple test.
create table tab1(id integer)
create table tab2(id integer)
begin
insert into tab1 values(1);
insert into tab1 values(2);
insert into tab1 values(3);
end;
begin
insert into tab2 values(3);
insert into tab2 values(4);
insert into tab2 values(5);
end;
Select t1.id, t2.id
from tab1 t1 full outer join tab2 t2
on t1.id =t2.id
Select t1.id, t2.id
from tab1 t1, tab2 t2
where t1.id = t2.id(+)
/Run it and see the result. -
What's faster - full outer join or sum a union
Hello,
what do you think it's the best way to bring two tables together? Full outer join (1) or sum over a union (2)?
1.
select a.id nvl(a.x,0) ,nvl(b.y,0) from
a full outer join b
where a.id=b.id
2.
select id, sun(x), sum(y) from
(select id, x,0 y from a
union all
select id, 0 x, y from b )
group by id;
The ids are primary keys and ca. 80% of ids in a are found in b and vice versa.
Both tables have about 20 mio datasets.
Thank for thinking about
StephanLike so many things in Oracle, the answer is it depends. Various factors such as resources available (memory, CPU, disk speed etc.), size of the tables, and the indexes available will all influence the performance of a given query.
Having said that, my guess would be that the UNION ALL query would be faster than the full outer join, since ther is less work involved. However, the optimized may be smart enough to re-write the full outer join as a union all.
Another approach which might be worth benchmarking is:
SELECT id, SUM(x), SUM(y)
FROM (SELECT id, SUM(x), 0 y
FROM a
GROUP BY id
UNION ALL
SELECT id, 0, SUM(y) y
FROM b
GROUP BY id)HTH
John -
How can I join/Full outer join two different columns instead of union all?
Hi,
I have a scenario as the following:
I am performing set operations using obiee 11g where I want to take values from two different criteria. Howwver, I dont want union to take place, instead i want join to take place to see all the columns in the output.
For that, I tried changing the sql in advanced tab and tried to put full outer join instead of union all but its not allowing me to change.
How can I achieve it? please help.
Thanks.Hi,
My problem is that I am unable to modify the sql in advanced tab. Probably due to some security reason,it's restricting me to change.
Can you suggest me a way to change it?
Thanks.. -
Union among multiple select queries with full outer join
Hello everyone,
I have 3 different select queries (used FULL Outer Join) which work fine. Now I want to add Union to the results among them and pick the selected columns from each query in the final result. while doing so, I am getting an error as "right parenthesis missing". I am quite sure, it is not the real cause. I guess might be issue with the query structure.
select j.pod, j.hostname, portal.hostname,saasc.hostname,a3s.hostname from -- * from
Select J.Pod,J.Hostname, P.Pod Portal_Pod,P.Hostname Portal_Hostname
From Total_Pod J
full outer join Portal_Tmp P On (J.Pod = P.Pod And J.Hostname = P.Hostname) as portal
Union
Select J.Pod,J.Hostname, s.Pod saasc_Pod,s.Hostname saasc_Hostname
From Total_Pod J
full outer join Saasc_Tmp S On (J.Pod = s.Pod And J.Hostname = s.Hostname) as saasc
Union
Select J.Pod,J.Hostname, a.Pod a3s_Pod,a.Hostname a3s_Hostname
From Total_Pod J
Full Outer Join A3s_Tmp A On (J.Pod = A.Pod And J.Hostname = A.Hostname) as a3s
)p.s: select * from (INNER QUERY); also does not work.
Any help appreciated.
Thanks in advance.With T as
(Select J.Pod,J.Hostname, P.Pod Portal_Pod,P.Hostname Portal_Hostname
From Total_Pod J
full outer join Portal_Tmp P On (J.Pod = P.Pod And J.Hostname = P.Hostname) ),
U as
(Select J.Pod,J.Hostname, s.Pod saasc_Pod,s.Hostname saasc_Hostname
From Total_Pod J
full outer join Saasc_Tmp S On (J.Pod = s.Pod And J.Hostname = s.Hostname) ),
V as
(Select J.Pod,J.Hostname, a.Pod a3s_Pod,a.Hostname a3s_Hostname
From Total_Pod J
Full Outer Join A3s_Tmp A On (J.Pod = A.Pod And J.Hostname = A.Hostname) )
Select T.Pod,T.Hostname,nvl(T.Portal_Hostname,'Not Available') portal,nvl(U.Saasc_Hostname,'Not Available') saasc,NVL(V.A3s_Hostname,'Not Available') a3s From T,U,V
Where T.Pod = U.Pod
And U.Pod = V.Pod
And T.Hostname = U.Hostname
And U.Hostname = V.Hostname -
Query with FULL OUTER JOIN , help pleaseeeeeeeeeeee...
Hi everyone,
I'm trying to write a query for a report in Oracle SQL, but i just can't figure out how to do it.
I'm using Oracle 10g release 1.0 database and i execute my queris in SQL* PLUS ( eventually i'm gonna use them in Oracle Report Builder ) .
here's what i have:
i have four tables that are used for our inventory application. lets call them INCOMMING , INCOMMING_ITEMS , OUTGOING , OUTGOING_ITEMS.
as you may have guessed , INCOMMING_ITEMS is the detail table for INCOMMING ( joined by IID column) and also OUTGOING_ITEMS is the detail table for OUTGOING ( joined by OID column ).
here is the structure of them :
INCOMMING
IID varchar2
CDATE date
INCOMMING_ITEM
IID varchar2
PART_NO number
QTY number
OUTGOING
OID varchar2
CDATE date
OUTGOING_ITEM
OID varchar2
PART_NO number
QTY number
now , the query i want, should return part_no , cdate , sum of OUTGOING qty , sum of INCOMMING qty .
the result of the query should be sth like this :
part_no cdate O_qty I_qty
100 01/05/06 10 0
100 01/05/07 20 60
200 01/06/02 0 50
300 01/06/02 30 40
this means that for some dates and for some parts, i may not have INCOMMING or OUTGOING data, but if at least one of the 2 last columns has a non-zero data, i should show the row ( like the first and third rows of my example result), and if both have data for the same PART_NO and the same CDATE, both should be showed in the same row. ( like the second row in my example result)
i tried so much and came up with several huge and also time consuming queries, but then i read abt FULL OUTER JOIN somewhere and tried using that. here is what i came up with :
SELECT
PART_NO , CDATE , sum(II.QTY) I_QTY , SUM (OI.QTY) O_QTY
FROM
(OUTGOING O INNER JOIN OUTGOING_ITEM OI USING ( OID ) )
FULL OUTER JOIN
(INCOMMING I INNER JOIN INCOMMING_ITEM II USING ( IID ) )
ON ( I.CDATE = O.CDATE AND II.PART_NO = OI.PART_NO)
WHERE
I.CDATE = :PARAMETER1
AND O.CDATE = :PARAMETER1
GROUP BY
PART_NO , CDATE
this query is short and fast , but the results r not what i expected. i mean, although i have used FULL OUTER JOIN in the query , but the results i get r sth like this :
part_no cdate O_qty I_qty
100 01/05/07 20 60
300 01/06/02 30 40
which means only the rows that has both values are returned.
any change i make to this query would make the SQL* PLUS hang , like when i use the cartesian product of two large tables, so i guess my changes wheren't in the right direction.
i think its possible to write this query using FULL OUTER JOIN syntax, but i just can't find it.
Can anybody pleaseeeeeeeeeeeee help me?
thanx in advance,
Maryam.Note: I wrote this on the fly -- hope there is no syntax errors, otherwise forgive me -- but you get the idea..
select
fromUnionAll.cdate, fromUnionAll.part_no,
sum(fromUnionAll.O_qty) O_qty,
sum(fromUnionAll.I_qty) I_qty
from
select
iinner.cdate, iinner.part_no, 0 O_qty, iinner.I_qty
from
select
i.cdate, ii.part_no,
/* added the case only for the extreme case when there is
no record anywhere for the given CDATE in INCOMMING_item */
sum( ( case when ii.qty is not null then ii.qty else 0 end) ) I_qty
from
incomming i,
incomming_item ii
where
i.iid = ii.iid (+)
group by i.cdate, ii.part_no
) iinner
union all
select
oinner.cdate, oinner.part_no, oinner.O_qty, 0 I_qty
from
select
o.cdate, oi.part_no,
/* added the case only for the extreme case when there is
no record anywhere for the given CDATE in OUTGOING_item */
sum( ( case when oi.qty is not null then oi.qty else 0 end) ) O_qty
from
outgoing o,
outgoing_item oi
where
o.oid = oi.oid (+)
group by o.cdate, oi.part_no
) oinner
) fromUnionAll
group by fromUnionAll.cdate, fromUnionAll.part_no;
--Samson -
Full outer join unexpected results
Warning, long message - I've searched the forums and found nothing similar. I've cut out as much as possible. We have been given the following schema to work with:
CREATE TABLE CALLS (
TRUNKIN VARCHAR2 (10),
TRUNKOUT VARCHAR2 (10),
DURATION FLOAT)
Here is some test data:
insert into calls values(null, 'a', 3);
insert into calls values(null, 'a', 2);
insert into calls values('a', null, 1);
insert into calls values(null, 'a', 0);
insert into calls values(null, 'a', 0);
insert into calls values(null, 'a', 7);
insert into calls values(null, null, 0);
This is horribly unnormalized, but basically this table represent phone calls. trunkin and trunkout represent the two ends, and duration is length of a call. While obviously every call has two ends, the nulls above represent ends we don't care about in this example.
The goal is to end up with data that looks like this. In English, we want the in and out summary statistics for each trunk to be summarized into a single row. (Sorry, these are supposed to be columns, but they got wrapped, so I reposted them as rows):
TRUNKIN a
IN_CALLS_ATTEMPTED 1
IN_CALLS_COMPLETED 1
IN_AVERAGE_DURATION 1
TRUNKOUT a
OUT_CALLS_ATTEMPTED 5
OUT_CALLS_COMPLETED 3
OUT_AVERAGE_DURATION 4
Indeed, with the data given above, these are the results returned with the query at the end of this message. However, when I changed the one non-null trunkin value to null, I got very strange results. First, I independently ran the two subqueries. The first of course returns no rows, the second returns 1 with the same out values above; this is exactly what I would expect. However, when I run the full query, I get **5** rows back, each with just the trunkout column set to "a" and **all** other columns set to null. This makes no sense to me. The 5 rows are obviously the 5 rows from the original data set where trunkout = "a", but I'm not full outer joining those; I'm full outer joining the result of the group by, which only has 1 row. But even given that I'm getting 5 rows back, shouldn't all five of those have the remaining out columns filled in with the values above?
Here is the query:
select
from
SELECT
trunkin as trunk,
COUNT(*) AS in_calls_attempted,
SUM
CASE
WHEN duration > 0 THEN 1
ELSE 0
END
) AS in_calls_completed,
SUM(duration)/
SUM
CASE
WHEN duration > 0 THEN 1
ELSE 0
END
) AS in_average_duration
FROM CALLS
WHERE trunkin IS NOT NULL
GROUP BY trunkin
) callsin
full outer join
SELECT
trunkout as trunk,
COUNT(*) AS out_calls_attempted,
SUM
CASE
WHEN duration > 0 THEN 1
ELSE 0
END
) AS out_calls_completed,
SUM(duration)/
SUM
CASE
WHEN duration > 0 THEN 1
ELSE 0
END
) AS out_average_duration
FROM CALLS
WHERE trunkout IS NOT NULL
GROUP BY trunkout
) callsout
on callsin.trunk = callsout.trunk;I am not entirely sure why you are getting the results you are, but I strongly suspect that it is a result of outer joining on null columns. I would write the query as follows to avoid the outer join problem. The CASE statements in the outer query around the average duration calulations avoid the divide by zero error that would occur when some trunk has only in or out calls.
SELECT trunk,SUM(in_calls_attempted) in_calls_attempted,
SUM(in_calls_completed) in_calls_completed,
CASE WHEN SUM(in_calls_completed) <> 0 THEN
SUM(in_duration)/SUM(in_calls_completed)
ELSE 0 END ave_in_duration,
SUM(out_calls_attempted) out_calls_attempted,
SUM(out_calls_completed) out_calls_completed,
CASE WHEN SUM(out_calls_completed) <> 0 THEN
SUM(out_duration)/SUM(out_calls_completed)
ELSE 0 END ave_out_duration
FROM (
SELECT trunkin trunk,COUNT(*) in_calls_attempted,
SUM(CASE WHEN duration > 0 THEN 1 ELSE 0 END) in_calls_completed,
SUM(duration) in_duration,0 out_calls_attempted,
0 out_calls_completed,0 out_duration
FROM calls
GROUP BY trunkin
UNION ALL
SELECT trunkout trunk,0 in_calls_attempted,0 in_calls_completed,
0 in_duration,COUNT(*) out_calls_attempted,
SUM(CASE WHEN duration > 0 THEN 1 ELSE 0 END) out_calls_completed,
SUM(duration) out_duration
FROM calls
GROUP BY trunkout)
GROUP BY trunkTTFN
John -
Help Required in full outer Join
I feel the below query can be changed to full outer join. But, I've not been able to do so.
I require your help in changing it to full outer join. My current query is
SELECT CLAIMNO,'1' INDX FROM D_CLAIM@CMS2PROD
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is null
MINUS
SELECT CLAIMNO,'1' FROM D_CLAIM
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is null
UNION
SELECT CLAIMNO,'2' FROM D_CLAIM
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is null
MINUS
SELECT CLAIMNO,'2' FROM D_CLAIM@cms2prod
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is nulldonisback wrote:
I feel the below query can be changed to full outer join. But, I've not been able to do so.
I require your help in changing it to full outer join. My current query is
SELECT CLAIMNO,'1' INDX FROM D_CLAIM@CMS2PROD
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is null
MINUS
SELECT CLAIMNO,'1' FROM D_CLAIM
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is null
UNION
SELECT CLAIMNO,'2' FROM D_CLAIM
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is null
MINUS
SELECT CLAIMNO,'2' FROM D_CLAIM@cms2prod
WHERE clntsys=76500 and facility=76501 and filecreatedt='18-feb-2011' and fileupdatedt is null
I do not think that query is doing what you think that it is doing - on first inspection, it was not doing what I thought either due to the order in which the UNION and MINUS operators are performed. If the FILECREATEDT column is defined as a DATE, your query is relying on an implicit date conversion - in such a case, you should replace:
filecreatedt='18-feb-2011'With:
filecreatedt=TO_DATE('18-feb-2011','DD-MON-YYYY')Now, building a simple model to explain what is happening, we create two tables with 10 rows each. The first table has C1 values that increase by 2, while the second has C1 values that increase by 3:
CREATE TABLE T1 AS
SELECT
ROWNUM*2 C1,
TRUNC(SYSDATE)+ROWNUM*2 C2
FROM
DUAL
CONNECT BY
LEVEL<=10;
CREATE TABLE T2 AS
SELECT
ROWNUM*3 C1,
TRUNC(SYSDATE)+ROWNUM*3 C2
FROM
DUAL
CONNECT BY
LEVEL<=10;It appears that the intended result of your query is to obtain a distinct list of those rows that are in each table that are not in both tables - the UNION ALL minus the intersection of the rows in two tables. However, that is not what you are achieving with that query. To demonstrate, the two halves of your query:
SELECT
C1,
C2
FROM
T1
MINUS
SELECT
C1,
C2
FROM
T2;
C1 C2
2 28-FEB-11
4 02-MAR-11
8 06-MAR-11
10 08-MAR-11
14 12-MAR-11
16 14-MAR-11
20 18-MAR-11
SELECT
C1,
C2
FROM
T2
MINUS
SELECT
C1,
C2
FROM
T1;
C1 C2
3 01-MAR-11
9 07-MAR-11
15 13-MAR-11
21 19-MAR-11
24 22-MAR-11
27 25-MAR-11
30 28-MAR-11As can be seen by the above, each half returned 7 rows - there are 7 rows in each table that is not in the other table. Common sense would state that if we UNION these two results (assuming no duplicate values in each table), we would see 14 rows:
SELECT
C1,
C2
FROM
T1
MINUS
SELECT
C1,
C2
FROM
T2
UNION
SELECT
C1,
C2
FROM
T2
MINUS
SELECT
C1,
C2
FROM
T1;
C1 C2
3 01-MAR-11
9 07-MAR-11
15 13-MAR-11
21 19-MAR-11
24 22-MAR-11
27 25-MAR-11
30 28-MAR-11Only 7 rows? Let's try again with the help of inline views to control the order in which the MINUS and UNION operators are processed:
SELECT
FROM
(SELECT
C1,
C2
FROM
T1
MINUS
SELECT
C1,
C2
FROM
T2)
UNION
SELECT
FROM
(SELECT
C1,
C2
FROM
T2
MINUS
SELECT
C1,
C2
FROM
T1);
C1 C2
2 28-FEB-11
3 01-MAR-11
4 02-MAR-11
8 06-MAR-11
9 07-MAR-11
10 08-MAR-11
14 12-MAR-11
15 13-MAR-11
16 14-MAR-11
20 18-MAR-11
21 19-MAR-11
24 22-MAR-11
27 25-MAR-11
30 28-MAR-11Note that the above returned 14 rows. We can do the same using just two outer joins:
SELECT
T1.C1,
T1.C2
FROM
T1,
T2
WHERE
T1.C1=T2.C1(+)
AND T2.C1 IS NULL
UNION
SELECT
T2.C1,
T2.C2
FROM
T1,
T2
WHERE
T2.C1=T1.C1(+)
AND T1.C1 IS NULL;
C1 C2
2 28-FEB-11
3 01-MAR-11
4 02-MAR-11
8 06-MAR-11
9 07-MAR-11
10 08-MAR-11
14 12-MAR-11
15 13-MAR-11
16 14-MAR-11
20 18-MAR-11
21 19-MAR-11
24 22-MAR-11
27 25-MAR-11
30 28-MAR-11Or we can do it with a full outer join and a MINUS operator:
SELECT
NVL(T1.C1,T2.C1) C1,
NVL2(T1.C1,T1.C2,T2.C2) C2
FROM
T1 FULL OUTER JOIN T2
ON T1.C1=T2.C1
MINUS
SELECT
T1.C1,
T1.C2
FROM
T1,
T2
WHERE
T1.C1=T2.C1;
C1 C2
2 28-FEB-11
3 01-MAR-11
4 02-MAR-11
8 06-MAR-11
9 07-MAR-11
10 08-MAR-11
14 12-MAR-11
15 13-MAR-11
16 14-MAR-11
20 18-MAR-11
21 19-MAR-11
24 22-MAR-11
27 25-MAR-11
30 28-MAR-11Or just with a full outer join with a WHERE clause:
SELECT
NVL(T1.C1,T2.C1) C1,
NVL2(T1.C1,T1.C2,T2.C2) C2
FROM
T1 FULL OUTER JOIN T2
ON T1.C1=T2.C1
WHERE
(T1.C1 IS NULL
OR T2.C1 IS NULL);
C1 C2
3 01-MAR-11
9 07-MAR-11
15 13-MAR-11
21 19-MAR-11
24 22-MAR-11
27 25-MAR-11
30 28-MAR-11
8 06-MAR-11
20 18-MAR-11
2 28-FEB-11
10 08-MAR-11
4 02-MAR-11
14 12-MAR-11
16 14-MAR-11With the above knowledge, you should be able to fix your SQL statement to produce the expected results.
Charles Hooper
Co-author of "Expert Oracle Practices: Oracle Database Administration from the Oak Table"
http://hoopercharles.wordpress.com/
IT Manager/Oracle DBA
K&M Machine-Fabricating, Inc. -
Granting SELECT to user on VIEW with FULL OUTER JOIN fails?
I have a quandary.
Using Oracle 9i, I have created a simple view. When I perform a count on it, rows are returned.
However, when I grant SELECT access to another user, they can't see the VIEW. The VIEW has a FULL OUTER JOIN operation in it.
When I do the same thing using a regular join, it works.
Any ideas why, please?
SQL> conn ifsinfo/******@DB
Connected.
SQL> ed
Wrote file afiedt.buf
1 create view mctest3 as
2 select
3 vc.idcus ,
4 ci.customer_id
5 from
6 ifsapp.vmo_company vc
7 full outer join
8 ifsapp.customer_info ci
9 on
10* vc.custno = ci.customer_id
SQL> /
View created.
SQL> select count(*) from mctest3;
COUNT(*)
73994
SQL> GRANT SELECT ON MCTEST3 TO IFSAPP WITH GRANT OPTION;
Grant succeeded.
SQL> CONN IFSAPP/******@DB
Connected.
SQL> select count(*) from IFSINFO.MCTEST3;
select count(*) from IFSINFO.MCTEST3
ERROR at line 1:
ORA-00942: table or view does not existbut with regular join:
SQL> conn ifsinfo/******@DB
Connected.
SQL> create view mctest4 as
2 select
3 vc.idcus ,
4 ci.customer_id
5 from
6 ifsapp.vmo_company vc, ifsapp.customer_info ci
7 where vc.custno = ci.customer_id;
View created.
SQL> select count(*) from mctest4;
COUNT(*)
44269
SQL> GRANT SELECT ON MCTEST4 TO IFSAPP WITH GRANT OPTION;
Grant succeeded.
SQL> conn ifsapp/******@DB
Connected.
SQL> select count(*) from IFSINFO.MCTEST4;
COUNT(*)
44269Hi,
>>SQL> conn ifsinfo/******@DB
Connected.
SQL> ed
Wrote file afiedt.buf
1 create view mctest3 as
2 select
3 vc.idcus ,
4 ci.customer_id
5 from
6 ifsapp.vmo_company vc
7 full outer join
8 ifsapp.customer_info ci
9 on
10* vc.custno = ci.customer_id
SQL> /
According to Note:244315.1, it is not possible to make a FULL OUTER JOIN on views owned by another user at the 9i version of Oracle. As above, do not use FULL OUTER JOIN on views owned by another user. Try to use outer join operator (+), and/or UNIONS instead.
Cheers -
Hi All,
I am new to crystal and my sql.
l have 2 command objects in that i have a common column pos_no.Now i need to apply Fullouterjoin between pos_no,but in crystal we don,t have that option.
So i saw some threads that we need to apply leftouterjoin union rightouterjoin to get FOJ in db level ,i tried ,but i don't have much knowledge in my sql.So can any one please apply FOJ between Pos_no of these two queries.
Please help me i strucked here
1st Query:
select
MIN(till_close.start_transaction_id) AS start_trans_id,
MAX(till_close.end_transaction_id) AS end_trans_id,
pos_config.pos_no,
pos_config.name AS pos_name,
SUM(transaction_tender.amount) AS EodDeposit
FROM
till_close
LEFT OUTER JOIN employee ON (till_close.employee_id = employee.employee_id)
INNER JOIN pos_config ON (till_close.pos_config_id = pos_config.pos_config_id)
INNER JOIN transaction_tender ON (till_close.end_transaction_id = transaction_tender.transaction_id)
INNER JOIN media_type ON (transaction_tender.media_type_id = media_type.media_type_id)
WHERE
DATE_FORMAT(till_close.transaction_date,'%d/%m/%Y') = DATE_FORMAT(STR_TO_DATE(?,'%d/%m/%Y'),'%d/%m/%Y')
AND transaction_tender.media_type_id NOT IN (10000)
GROUP BY
pos_config.pos_no
ORDER BY
pos_config.pos_no
2nd Query:
select
pos_config.pos_no,
pos_config.name AS pos_name,
SUM(CASE WHEN transaction.transaction_type_id=7 AND ((SELECT COUNT(transaction_id) FROM transaction_tender WHERE transaction_id = transaction.transaction_id AND media_type_id IN (SELECT media_type_id FROM media_type WHERE tender_type_id=12) AND amount < 0 )>0) THEN 0
WHEN transaction_tender.balance < 0
THEN transaction_tender.amount
ELSE (transaction_tender.amount - transaction_tender.balance)
END) AS net
FROM
TRANSACTION
INNER JOIN transaction_tender ON (transaction.transaction_id = transaction_tender.transaction_id)
INNER JOIN media_type ON (transaction_tender.media_type_id = media_type.media_type_id)
INNER JOIN pos_config ON (transaction.pos_config_id = pos_config.pos_config_id)
WHERE
transaction.transaction_date = DATE_FORMAT(STR_TO_DATE(?, '%d/%m/%Y'), '%Y-%m-%d')
AND transaction.transaction_type_id IN (1,5,7)
AND transaction.transaction_status_id = 3
AND transaction.is_training_mode = 0
GROUP BY
pos_config.pos_nohi Divya,
i would definitely take the advice from the folks here on a rewrite of your commands into one command.
since you've got 2 commands that are bringing back different results you may wish to consider bringing back the results from the 2nd command via a sub-query.
the general idea of the query is below, but you'll need to consult your online help for your database and or your dba for the correct syntax for your situation.
notes:
1) the subselect is in the bold font and is defined as a result set in the join...again, please consult your database help or the appropriated forum for your database as your syntax may vary
2) the fields in the subquery are then referenced in the select clause using the TT alias assigned to the result set in the join
3) the full outer join i guessed that you wanted on the two pos_no fields
4) if you do try to do this method and are looking on your database forum, do a search on "subquery multiple columns"
cheers,
jamie
select
MIN(till_close.start_transaction_id) AS start_trans_id,
MAX(till_close.end_transaction_id) AS end_trans_id,
pos_config.pos_no AS PC_pos_no,
pos_config.name AS pos_name AS PC_pos_name,
SUM(transaction_tender.amount) AS EodDeposit,
TT.pos_no AS TT_pos_no,
TT.pos_name AS TT_pos_name,
TT.net
FROM
till_close
LEFT OUTER JOIN employee ON (till_close.employee_id = employee.employee_id)
INNER JOIN pos_config ON (till_close.pos_config_id = pos_config.pos_config_id)
INNER JOIN transaction_tender ON (till_close.end_transaction_id = transaction_tender.transaction_id)
INNER JOIN media_type ON (transaction_tender.media_type_id = media_type.media_type_id)
FULL OUTER JOIN
(select
pos_config.pos_no,
pos_config.pos_name,
SUM(CASE WHEN transaction.transaction_type_id=7 AND ((SELECT COUNT(transaction_id) FROM transaction_tender WHERE transaction_id = transaction.transaction_id AND media_type_id IN (SELECT media_type_id FROM media_type WHERE tender_type_id=12) AND amount < 0 )>0) THEN 0
WHEN transaction_tender.balance < 0
THEN transaction_tender.amount
ELSE (transaction_tender.amount - transaction_tender.balance)
END) AS net
FROM
TRANSACTION
INNER JOIN transaction_tender ON (transaction.transaction_id = transaction_tender.transaction_id)
INNER JOIN media_type ON (transaction_tender.media_type_id = media_type.media_type_id)
INNER JOIN pos_config ON (transaction.pos_config_id = pos_config.pos_config_id)
WHERE
transaction.transaction_date = DATE_FORMAT(STR_TO_DATE(?, '%d/%m/%Y'), '%Y-%m-%d')
AND transaction.transaction_type_id IN (1,5,7)
AND transaction.transaction_status_id = 3
AND transaction.is_training_mode = 0
GROUP BY
pos_config.pos_no) AS TT
ON TT.pos_no = pos_config.pos_no
WHERE
DATE_FORMAT(till_close.transaction_date,'%d/%m/%Y') = DATE_FORMAT(STR_TO_DATE(?,'%d/%m/%Y'),'%d/%m/%Y')
AND transaction_tender.media_type_id NOT IN (10000)
GROUP BY
pos_config.pos_no
ORDER BY
pos_config.pos_no -
Full outer Join:ORA-01790
Hi All,
The issue may be silly, but we cant make it out:
DB : Oracle Database 10g Enterprise Edition Release 10.2.0.1.0 - ProdWe are running the below query with no issues:
select t1.text,t2.text text2,t1.line,decode(upper(t1.text),upper(t2.text),1,0) flg
from
(select text,row_number() over(order by line) line
from user_source
where name = 'COLL_MVIEW_REFRESH_PROC_LBK'
and replace(trim(text),chr(10)) is not null
) t1,
(select text ,row_number() over(order by line) line
from user_source
where name = 'COLL_MVIEW_REFRESH_PROC'
and trim(replace(text,chr(10))) is not null) t2
where t1.line = t2.lineBut when trying for an outer join it is giving error like
ORA-01790: expression must have same datatype as corresponding expressionOuter Join Query:
select t1.text,t2.text,t1.line,decode(upper(t1.text),upper(t2.text),1,0) flg
from
(select text,row_number() over(order by line) line
from user_source
where name = 'COLL_MVIEW_REFRESH_PROC_LBK'
and replace(trim(text),chr(10)) is not null
) t1 full outer join
(select text ,row_number() over(order by line) line
from user_source
where name = 'COLL_MVIEW_REFRESH_PROC'
and trim(replace(text,chr(10))) is not null) t2
on( t1.line = t2.line )Any idea what is wrong here?
Thanks,
JeneeshNot sure what is wrong with your version. It might have to do with row_number not working on an empty row (outer joined).
How about this alternative?
The approach is a bit different, but it uses only one access to the user_source view.
select s.lineNo, min(s.text1) text1, min(s.text2) text2, decode(upper(min(s.text1)), upper(min(s.text2)), 1, 0) flag
from
(select decode(u.name, 'COLL_MVIEW_REFRESH_PROC_LBK', u.text) text1
,decode(u.name, 'COLL_MVIEW_REFRESH_PROC'
, u.text) text2
,u.name,
row_number() over (partition by u.name order by u.line) lineNo
from user_source u
where u.name in ('COLL_MVIEW_REFRESH_PROC_LBK','COLL_MVIEW_REFRESH_PROC'
/* and u.TYPE = 'PROCEDURE' */
and replace(trim(u.text),chr(10)) is not null
) s
group by s.lineNo
order by s.lineNo;Edited by: Sven W. on Nov 18, 2008 5:24 PM -
Full outer join --- bug? Urgent
Hi,
I have a simple mapping using 2 source tables and doing an full outer join. While executing the mapping it is throwing me out with an error --
Starting Execution LOAD_SAP
Starting Task LOAD_SAP
ORA-01790: expression must have same datatype as corresponding expression
ORA-02063: preceding line from ODSD@LOC_TGT_LOC_ODSD
ORA-06512: at "DWH_USER.LOAD_SAP", line 12
ORA-06512: at "DWH_USER.LOAD_SAP", line 481
ORA-06512: at "DWH_USER.LOAD_SAP", line 795
ORA-06512: at "DWH_USER.LOAD_SAP", line 1973
ORA-06512: at line 1
Completing Task LOAD_SAP
Completing Execution LOAD_SAP
The SQL generated at line 12 is -
CURSOR "JOIN_c" IS
SELECT
/*+ DRIVING_SITE("CONNECTION_LOC_TGT_LOC_ODSD") */
"CONNECTION_LOC_TGT_LOC_ODSD"."END_USER_CUST_ID" "END_USER_CUST_ID",
"SERVICE_LOC_TGT_LOC_ODSD"."SERVICE_NAME" "SERVICE_NAME",
"CONNECTION_LOC_TGT_LOC_ODSD"."CE_CLLI" "CE_CLLI",
"CONNECTION_LOC_TGT_LOC_ODSD"."PE_CLLI" "PE_CLLI"
FROM "ODS"."CONNECTION"@"ODSD"@"LOC_TGT_LOC_ODSD" "CONNECTION_LOC_TGT_LOC_ODSD"
FULL OUTER JOIN "ODS"."SERVICE"@"ODSD"@"LOC_TGT_LOC_ODSD" "SERVICE_LOC_TGT_LOC_ODSD" ON ("CONNECTION_LOC_TGT_LOC_ODSD"."END_USER_CUST_ID" = "SERVICE_LOC_TGT_LOC_ODSD"."END_USER_CUST_ID") ;
If I replace the Full outer join with an equi join everything works fine. The SQL generated with an equi-join is ---
SELECT
/*+ DRIVING_SITE("CONNECTION_LOC_TGT_LOC_ODSD") */
"CONNECTION_LOC_TGT_LOC_ODSD"."END_USER_CUST_ID" "END_USER_CUST_ID",
"SERVICE_LOC_TGT_LOC_ODSD"."SERVICE_NAME" "SERVICE_NAME",
"CONNECTION_LOC_TGT_LOC_ODSD"."CE_CLLI" "CE_CLLI",
"CONNECTION_LOC_TGT_LOC_ODSD"."PE_CLLI" "PE_CLLI"
FROM "ODS"."CONNECTION"@"ODSD"@"LOC_TGT_LOC_ODSD" "CONNECTION_LOC_TGT_LOC_ODSD",
"ODS"."SERVICE"@"ODSD"@"LOC_TGT_LOC_ODSD" "SERVICE_LOC_TGT_LOC_ODSD" WHERE ( "CONNECTION_LOC_TGT_LOC_ODSD"."END_USER_CUST_ID" = "SERVICE_LOC_TGT_LOC_ODSD"."END_USER_CUST_ID" );
We are using Oracle 9.2.0.4 AND OWB Clinet 9.2.0.2.8 and runtime repository 9.2.0.2.0.
Any help on this appreciated?The discussion on this thread has moved to the later thread Problem with JOINs
Nikolai -
CREATE TABLE FEE_BANDS_AUD1
AUDIT_DATE TIMESTAMP (6) NOT NULL ENABLE,
AUDIT_ACTION VARCHAR2(30 BYTE) NOT NULL ENABLE,
AUDIT_USER VARCHAR2(8 BYTE) NOT NULL ENABLE,
FEE_BANDS_ID NUMBER NOT NULL ENABLE,
FEE_RULE VARCHAR2(10 BYTE) NOT NULL ENABLE,
FEE_BAND_LOWER_LIMIT NUMBER(19,0),
FEE_BAND_HIGHER_LIMIT NUMBER(19,0),
RATE_PERCENT NUMBER(11,4),
RATE_NUMBER NUMBER(21,2),
CAL_BASED_ON CHAR(1 BYTE) NOT NULL ENABLE,
REC_SEQ NUMBER(5,0) NOT NULL ENABLE)
FEE_BANDS_AUD
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 06:31:56.625000000 AM','CREATE','sdn',1,'NSK',0,9999999999999999999,11,0,'B',0);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 06:53:08.659000000 AM','UPDATE','sdn',1,'NSK',0,100,11,0,'B',1);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 06:53:08.659000000 AM','UPDATE','sdn',2,'NSK',101,9999999999999999999,1,0,'B',1);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 06:54:51.354000000 AM','UPDATE','sdn',1,'NSK',0,100,11,0,'B',2);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 06:54:51.354000000 AM','UPDATE','sdn',2,'NSK',101,9999999999999999999,33,0,'B',2);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:15:16.354000000 AM','UPDATE','sdn',1,'NSK',0,100,11,0,'B',3);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:15:16.354000000 AM','UPDATE','sdn',2,'NSK',101,200,33,0,'B',3);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:15:16.354000000 AM','UPDATE','sdn',3,'NSK',201,9999999999999999999,1,0,'B',3);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:15:53.341000000 AM','UPDATE','sdn',1,'NSK',0,100,11,0,'B',4);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:15:53.341000000 AM','UPDATE','sdn',2,'NSK',101,200,33,0,'B',4);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:15:53.341000000 AM','UPDATE','sdn',3,'NSK',201,9999999999999999999,2,0,'B',4);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:18:52.118000000 AM','UPDATE','sdn',1,'NSK',0,100,11,0,'B',5);
INSERT INTO FEE_BANDS_AUD1 VALUES('18-10-10 07:18:52.118000000 AM','UPDATE','sdn',2,'NSK',101,9999999999999999999,2,0,'B',5); I have a bandId, in which i will update a new band or delete a band. Each time when i insert,update or delete rec_seq is incremented to one to identify the old set of bands and new set of bands.
My problem here is when i deleted a band (which is last two insert statments from the above) those are not coming in the old values . It should come in the old value set and new value should come as null.
I am using full outer join because when i create a new record there wont be any old values in this case old values should come as null and also i delete any values there wont be any new value for that so new should come as null
This is the query im trying
select
O.REC_SEQ,O.audit_action,O.fee_bands_id, O.FEE_RULE,
O.FEE_BAND_LOWER_LIMIT, O.FEE_BAND_HIGHER_LIMIT,O.CAL_BASED_ON,
N.REC_SEQ,n.audit_action,n.fee_bands_id, N.FEE_RULE,
N.FEE_BAND_LOWER_LIMIT, N.FEE_BAND_HIGHER_LIMIT,N.CAL_BASED_ON
from fee_bands_aud1 O FULL OUTER JOIN fee_bands_aud1 N
on (N.fee_bands_id = O.fee_bands_id
and N.FEE_RULE = O.FEE_RULE
and O.REC_SEQ = N.REC_SEQ-1)
where N.FEE_RULE = 'NSK'
order by N.REC_SEQ, n.fee_bands_idwhat is the problem anybody please help i am very new to oracle.Yes, it's possible.
Search for "full outer join" in the online manuals
http://tahiti.oracle.com/pls/db92/db92.drilldown?levelnum=2&toplevel=a96540&method=FULL&chapters=0&book=&wildcards=1&preference=&expand_all=&verb=&word=full+outer+join+#a96540
In the SQL Reference you can find an example -
Using full outer join of subqueries named using with clause
Hi,
I am trying to create a view which is having 2 subqueries vol1 & vol2 with WITH clause. I am joining those 2 subqueries in the main query with FULL OUTER JOIN.
When i compile that view in a tool like pl/sql developer, It has been compiled successfully.
But when i call the view creation script from SQL command prompt, It is throwing error as
from vol1 FULL JOIN vol2 o ON (vol1.ct_reference = vol2.ct_reference and vol1.table_name = vol2.table_name
ERROR at line 29:
ORA-00942: table or view does not exist
Kindly advise whats going wrong.that's line 29. Maybe you get a better idea if you strip your operation of all the unneccessary elements until it works.
There are some known bugs with subquery factoring (aka with clause) and also with ANSI join syntax, but it is hard to tell what happens here based on your description. But one thing is strange - if it is not a result of formatting (not formatting): I would expect the asterisk beneath the unknown table and not beneath the key word FULL.
P.S.: my editor makes me think it's rather a proportional font thing. Have I already said that I don't like proportional font for SQL code examples?
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