Query slow when exctract column from a left outer join
Hi,
in my 2008 i've a query like this:
select a1, a2,a3
from ....
LEFT OUTER JOIN (select a2,a3....
from my_tab_with_170Milionrecords
if I exclude a2,a3 from principal select the elapsed is about 1
If I include a2,a3 the elapsed is abount 40s
How can solve this?
Regards
I posted an example how re-write it
select a1, a2,a3
from ....
LEFT OUTER JOIN
my_tab_with_170Milionrecords ON ........
Instead of subquery LEFT JOIN user the standard LEFT JOIN..
Best Regards,Uri Dimant SQL Server MVP,
http://sqlblog.com/blogs/uri_dimant/
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Similar Messages
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Hi Experts,
I am facing a problem with left outer join query. Am using one standard table and ztable for this join. My problem is values are not extracted from the Ztable.
Query:
SELECT b~lifnr b~belnr b~gjahr b~xblnr b~shkzg b~blart b~zfbdt b~budat b~wrbtr
b~wskto b~zlspr s~EXTRACT_STATUS s~maturity_date FROM bsik AS b
LEFT OUTER JOIN zprm_rvne_sapdoc AS s
ON s~belnr EQ b~belnr
AND s~gjahr EQ b~gjahr
INTO CORRESPONDING FIELDS OF TABLE it_join
WHERE b~zlsch = p_zlsch
AND b~xblnr IN so_invno
ORDER BY b~lifnr b~xblnr.
I have all entries of BSIK table in Ztable with extract status as Y but this query is not fetching extract status and maturity date of ztable so it is blank in the internal table.
Need solution.
Regards
Sridevi SHi,
see the sample wiki for writing the Left outer join
http://wiki.sdn.sap.com/wiki/display/Snippets/EmployeeInfotype0000to9999ChangeHistory
Specifying Two or More Database Tables as a Left Outer Join
The left outer join, on the other hand, reads lines from the left-hand database table or join even if there is no corresponding line in the right-hand table.
SELECT...
FROM <tab> LEFT [OUTER] JOIN <dbtab> [AS <alias>] ON <cond>
<options>
<tab> and <dbtab> are subject to the same rules and conditions as in an inner join. The OUTER addition is optional. The tables are linked in the same way as the inner join with the one exception that all lines selected from <tab> are included in the final selection. If <dbtab> does not contain any lines that meet the condition <cond>, the system includes a single line in the selection whose columns from <dbtab> are filled with null values.
In the left outer join, more restrictions apply to the condition <cond> than in the inner join. In addition to the above restrictions:
EQ or = is the only permitted relational operator.
There must be at least one comparison between columns from <tab> and <dbtab>.
The WHERE clause may not contain any comparisons with columns from <dbtab>. All comparisons using columns from <dbtab> must appear in the condition <cond>.
If we have two tables named stud1,stud2 with the following data
Stud1: id Name stud2: id Name
1 xxx 1 aaa
2 yyy 2 bbb
3 zzz 4 ccc
4 www 6 ddd
When we use Left Outer Join we get the output as:
1 aaa
2 bbb
3 <Null>
4 ccc
When we use Right Outer Join we get the output as:
1 aaa
2 bbb
4 ccc
<Null> ddd
When we use Full Outer Join we get the output as:
1 aaa
2 bbb
3 <Null>
4 ccc
<Null> ddd
Prabhudas -
I have two tables and I want to return all data from the first table with a piece of information from the second based on an effective date being at least a certain value. The tables I am working with contain billions of rows so I need a solution that will also scale.
Sample tables:
create table pp ( x number, y number);
create table ec ( x number, y number, effdate date);
insert into pp values (1,2);
insert into pp values (2,3);
insert into pp values (1,3);
insert into ec values (1,2,sysdate);
insert into ec values (2,3,sysdate);
insert into ec values (1,3,sysdate+365);
commit;
select * from pp, ec where pp.x = ec.x(+) and pp.y=ec.y(+)
and (effdate = ( select max(effdate) from ec ecc where ecc.y=ec.y and ecc.x = ec.x and effdate < sysdate) or effdate is null);
The above query (and the one below) returns two rows. it does not return where the date does not meet the criteria.
select * from pp LEFT OUTER JOIN ec ON pp.x = ec.x and pp.y=ec.y
WHERE (effdate = ( select max(effdate) from ec ecc where ecc.y=ec.y and ecc.x = ec.x and effdate < sysdate) or effdate is null);
This returns the three rows BUT IS VERY SLOW when run against the billion+ row table (because we cannot correlate the subquery results.)
select * from pp LEFT OUTER JOIN (SELECT x, y, effdate
FROM ec WHERE effDate = (SELECT MAX(EFFdate) from ec ecc where ecc.y=ec.y and ecc.x = ec.x and effdate < sysdate)) c ON c.x = pp.x and c.y = pp.y;It would help quite a bit to know
1) your Oracle version
2) your indexes and data volumes (do BOTH tables have billions of rows?)
But here's something that may perform faster.
ME_XE? WITH Maximizied AS
2 (
3 SELECT
4 MAX(EffDate),
5 x,
6 y
7 FROM ec
8 WHERE EffDate < SYSDATE
9 GROUP BY x, y
10 )
11 SELECT *
12 FROM pp p, Maximizied m
13 WHERE p.x = m.x (+)
14 AND p.y = m.y (+);
X Y MAX(EFFDAT X Y
2 3 05-29-2008 2 3
1 2 05-29-2008 1 2
1 3
3 rows selected.
Elapsed: 00:00:00.03 -
LEFT OUTER JOIN not working as expected
I'm testing a query from the portal. I've got two inputs:
products
{"ProductKey":1,"ProductAlternateKey":"abc","Color":"Red"},
{"ProductKey":2,"ProductAlternateKey":"def","Color":"Blue"},
{"ProductKey":3,"ProductAlternateKey":"ghi","Color":"Blue"}
And temperatures:
{"DeviceId":1,"Temperature":99},
{"DeviceId":2,"Temperature":90},
{"DeviceId":2,"Temperature":99},
{"DeviceId":3,"Temperature":50},
{"DeviceId":4,"Temperature":32}
When I test a query with an (inner) join, I get two rows, one for Red and one for Blue as expected. However, when I change to a LEFT OUTER JOIN, I would expect to get three rows... one for Red, one for Blue, and one for NULL color. However, I only get one
row with a NULL color. Here's the query. Is this a bug or am I misunderstanding?
SELECT DateAdd(second,-5,System.TimeStamp) as WinStartTime
, system.TimeStamp as WinEndTime
, b.Color
, Avg(r.Temperature) as AvgTemperature
, Count(*) as EventCount
FROM temperatures r
LEFT OUTER JOIN products b ON r.DeviceId = b.ProductKey and DATEDIFF(hour,r,b) BETWEEN -6 AND 6
GROUP BY TumblingWindow(second, 5), b.Color
(Please excuse the contrived example, the lack of timestamps, and the 12 hour window... just testing.)
http://artisconsulting.com/Blogs/GregGallowayHi Greg,
Thank you for raising this issue.
We have deployed a fix today that corrects LEFT OUTER JOIN behavior on the in-browser query testing experience.
Can you please confirm that the above query and input sources work for you?
Thanks!
Ziv. -
Left outer join problem -- need feedback
using crystal 2008
haveing prolbems with a left outerjoin to get a blank field(null) to show up.
basically i have some po line have have long descriptions or text fields that i want to include with the report. Below is my sql statement. I have written a formula with a join between 2 fields to get the report to work- this does but- it leave the polines off that do not have a long description. I have tried left outer joins but seem to be having problems. The long description field where the data is actually at is under my po.line table, although serveral area have long description fields -
*one note i had to add a duplicate table to the field to get some items in my header to work properly - not sure if this is effecting the report or not.
OK- when I set up the link to a LO join enforce from = to
and dont add the ldtext.field to the report the left outjoin works(but no long description)and all my line items show up.
1. when I keep the same join and add either just the ld.text field to the report it comes back with a error saying invalid table
2. when i use my formula that joins the ld.text and po.line and place it in the report with the same left outerjoin i get the same failure.
3. when i dont reference the ldtext(field) at all in the report it works fine w/ the lo join
4. when i Dont use a left outer join and use my formula(see below)
if not isnull(({LONGDESCRIPTION.LDTEXT }))
then {POLINE.DESCRIPTION}+{LONGDESCRIPTION.LDTEXT}
else {POLINE.DESCRIPTION}
and link from poline.ld
to ld.ldtext - my formula works and populates the po.line and the ld.text together - except that any po.line with no description will not show up. Like its not there.
Not sure what to do?
here is my current sql statement with the longdescription field in the select statement
here is the error statement i am getting:
Failed to retrieve data from the database:
Details:42000[intersolv][odb sql base driver][sql base] 00906 itn invalid table name[database vendor code:906]
sql statement:
SELECT "PO"."PONUM", "PO"."STATUS", "PO"."VENDOR",
"COMPANIES"."NAME", "COMPANIES"."ADDRESS1",
"COMPANIES"."ADDRESS2", "COMPANIES"."ADDRESS3",
"COMPANIES"."ADDRESS4", "COMPANIES"."PHONE",
"COMPANIES"."FAX", "COMPANIES_1"."NAME",
"COMPANIES_1"."ADDRESS1", "COMPANIES_1"."ADDRESS2",
"COMPANIES_1"."ADDRESS3", "COMPANIES_1"."ADDRESS4",
"COMPANIES_1"."CONTACT", "COMPANIES_1"."PHONE",
"COMPANIES_1"."FAX", "PO"."PURCHASEAGENT",
"PO"."ORDERDATE",
"PO"."REQUIREDDATE", "PO"."PAYMENTTERMS",
"PO"."SHIPVIA", "PO"."FREIGHTTERMS", "PO"."FOB",
"POLINE"."DESCRIPTION", "POLINE"."ITEMNUM",
"POLINE"."ORDERQTY", "POLINE"."UNITCOST",
"POLINE"."LOADEDCOST", "POLINE"."POLINENUM",
"PO"."SHIPTOATTN", "LONGDESCRIPTION"."LDTEXT"
FROM ("MAXIMO"."PO" "PO" LEFT OUTER JOIN
"MAXIMO"."LONGDESCRIPTION" "LONGDESCRIPTION" ON "PO"."LDKEY"="LONGDESCRIPTION"."LDKEY"),
"MAXIMO"."POLINE" "POLINE",
"MAXIMO"."COMPANIES" "COMPANIES_1",
"MAXIMO"."COMPANIES" "COMPANIES"
WHERE ("PO"."PONUM"="POLINE"."PONUM") AND ("PO"."VENDOR"="COMPANIES_1"."COMPANY") AND ("PO"."SHIPTO"="COMPANIES"."COMPANY") AND "PO"."PONUM"='3386-053'If you took the time to read this thanks.... turns out... and I just want to pull my hair out over this. My connection had a old odbc driver so somehow it would not allow a left outer join....go figure - weeks of agony over that..... thanks ....have to say love this forum.
-
Left outer join Bug? Oracle 11 g.
Hi , I am facing a strange problem in oracle 11 g .
I have a select query like this
Query 1 :
Select A.name, B.name, C.name from A Left outer join B on A.id = B.id left outer join C on b.id = c.id and (Some complex condition) left outer join D on C.id = D.id;
A, B, C, D are tables.
(Assume that I have data which satisfies the above join conditions)
However I am not getting C.name in the result. Getting NULL in C.name.
Now if I add a where clause to the above query like the following Query 2 then I get C.name in the results
Consider that there is a field called field1 in table C and the value of field1 is ‘xyz’ for all the rows of table C .
Query 2 :
Select A.name, B.name, C.name from A Left outer join B on A.id = B.id left outer join C on b.id = c.id and (Some complex condition) left outer join D on C.id = D.id where c.field1 = ‘xyz’;
I find this strange , What role where clause is playing ? Why I get C.name only after adding where clause.
I also tried following setting with Query 1 however this also did not help me.
alter session set "_optimizer_join_elimination_enabled"=false;
Is oracle does some optimization if no where clause is specified ? Is this a bug?
Please help me out.
Thanks,
Sumit874384 wrote:
...Is this a bug? Maybe. Maybe not. Really difficult to say based on your description. However, if you suspect a bug, then raise a ticket to the support including much more information (e.g. version 11.x.x.x, define "some condition" and so on).
Nicolas. -
Hi Experts,
Can you please help me with the below query on LEFT OUTER JOIN. I just want to know whether the below 2 queries are the same.
1. select * from FROM hrm2_requests req LEFT OUTER JOIN hrm2_request_complaints hrm_comp LEFT OUTER JOIN hrm2_swap_complaint_detail comp_dtl LEFT OUTER JOIN hrm2_swap_complaint comp
ON comp_dtl.complaint_code = comp.complaint_code
ON hrm_comp.complaint_detail_code = comp_dtl.complaint_detail_code
ON req.work_order = hrm_comp.work_order
2. select * from hrm2_requests req LEFT OUTER JOIN hrm2_request_complaints hrm_comp
ON req.work_order = hrm_comp.work_order
LEFT OUTER JOIN hrm2_swap_complaint_detail comp_dtl
ON hrm_comp.complaint_detail_code = comp_dtl.complaint_detail_code
LEFT OUTER JOIN hrm2_swap_complaint comp
i.e. SELECT * FROM TABLE1 LEFT OUT JOIN TABLE2 LEFT OUTER JOIN TABLE3 ON CONDITION <<>>
is this equal to
SELECT * FROM TABLE1 LEFT OUTER JOIN TABLE2 ON CONDITION
LEFT OUTER JOIN TABLE3 ON CONDITION
because the cost of the 1st query is very high and i change the sql like 2nd, the cost reduced a lot.
Thanks,
Yuvaraaj.Each JOIN clause must contain an ON condition (except for CROSS JOIN but let's not go there) so your example isn't syntactically valid and I'm not sure what you are comparing to what. I would probably write it as:
select *
from from hrm2_requests req
left join hrm2_request_complaints hrm_comp
on hrm_comp.work_order = req.work_order
left join hrm2_swap_complaint_detail comp_dtl
on comp_dtl.complaint_detail_code = hrm_comp.complaint_detail_code
left join hrm2_swap_complaint comp
on comp.complaint_code = comp_dtl.complaint_codeThe order in which you arrange the join clauses will not affect performance. -
Help on "Left Outer Join" migration
Can somebody help me convert the following join to Oracle, thanks.
SELECT ...
FROM ats
LEFT OUTER JOIN vw_S sv ON ats.SID = sv.SID AND ats.R <> 'H'
LEFT OUTER JOIN vw_P ag ON ats.AID = ag.AID
The Workbench said "Manual conversion required"Hi Jimmy,
Oracle 9i now supports ISO/ANSI outer join syntax
So no changes are required.
T-SQL
SELECT ...
FROM ats
LEFT OUTER JOIN vw_S sv ON ats.SID = sv.SID AND ats.R <> 'H'
LEFT OUTER JOIN vw_P ag ON ats.AID = ag.AID
Oracle 9i (has ISO/ANSI Join Syntax)
SELECT ...
FROM ats
LEFT OUTER JOIN vw_S sv ON ats.SID = sv.SID AND ats.R <> 'H'
LEFT OUTER JOIN vw_P ag ON ats.AID = ag.AID
Oracle 8i
SELECT ...
FROM ats , vw_S sv , vw_P ag
WHERE ats.SID = sv.SID (+)
AND ats.R <> 'H'
AND ats.AID = ag.AID (+)
I have not tested the above but I believe they are equivalent.
I hope this helps
Dermot. -
Not using Index when SDO_RELATE in Spatial Query is used in LEFT OUTER JOIN
I want to know for every City (Point geometry) in which Municipality (Polygon geometry) it is.
Some cities will not be covered by any municipality (as there is no data for it), so its municipality name should be blank in the result
We have 4942 cities (point geometries)
and 500 municipalities (polygon geometry)
SELECT T1.NAME as City, T2.NAME as Municipality
FROM CITY T1
LEFT OUTER JOIN MUNICIPALITY T2 ON SDO_RELATE(T1.GEOM, T2.GEOM, 'MASK=ANYINTERACT') = 'TRUE'The explain plan for this query is:
SELECT STATEMENT
FILTER
Filter Predicates
MDSYS.SDO_RTREE_RELATE(T1.GEOM, T2.GEOM, 'mask=ANYINTERACT querytype=window ') = 'TRUE'
MERGE JOIN
TABLE ACCESS CITY FULL 11
BUFFER SORT 100605
TABLE ACCESS MUNICIPALITY FULL 20So the cost is in the BUFFER (whatever that is), it takes +2000 seconds to run this, it is not using the spatial index.
And we are not getting all rows, but only the ones interacting with a municipality, e.g. 2436 rows.
But I want all rows, including the ones not interacting with any Municipality.
When we want only those cities that actually are in a municipality, I use a different query and it will use the index.
SELECT T1.NAME as City, T2.NAME as Municipality
FROM CITY T1, MUNICIPALITY T2
WHERE SDO_RELATE(T1.GEOM, T2.GEOM, 'MASK=ANYINTERACT') = 'TRUE'I get (only) 2436 rows (as expected) in 5 seconds (it is fast) and the explain plan shows it is using the spatial index.
But in this case, I am not getting any cities not inside any municipality (of course)
SELECT STATEMENT
NESTED LOOPS
TABLE ACCESS MUNICIPALITY FULL 22
TABLE ACCESS CITY BY INDEX ROWID 22
DOMAIN INDEX CITY_SDX 0
Access Predicates
MDSYS.SDO_RTREE_RELATE(T1.GEOM, T2.GEOM, 'mask=ANYINTERACT querytype=window ') = 'TRUE'I always thought a LEFT OUTER JOIN would return all rows from the Table, whatever happens in the next,
but it seems the query has been rewritten so that it is now using a Filter Predicate in the end, which filters those geometries having no interaction.
As an example I also do thing alphanumerically, I do get 4942 rows, including the ones which have no Municipality name.
In this case the names must match, so its only for testing if the LEFT OUTER JOIN returns stuff correctly, which it does in this case.
SELECT T1.NAME as City, T2.NAME as Municipality
FROM CITY T1
LEFT OUTER JOIN MUNICIPALITY T2 ON T1.NAME = T2.NAMEIs this an Oracle Spatial bug, e.g. not return 4942 rows, but only 2436 rows on the first query?
Note all tests performed on Oracle 11g R2 (11.2.0.1.0)Patrick,
Even so, your geoms in the relate were the wrong way around.
Also, I don't recall you saying (or showing) that you wanted the municipality geometry returned. Still,
no matter, easy to do.
Here are some additional suggestions. I don't have your data so I have had to use some of my own.
set serveroutput on timing on autotrace on
SELECT T1.SPECIES as City,
(SELECT T2.ADMIN_NAME FROM AUSTRALIAN_STATES T2 WHERE SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE') as Municipality,
(SELECT T2.GEOM FROM AUSTRALIAN_STATES T2 WHERE SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE') as geom
FROM GUTDATA T1;
762 rows selected
Elapsed: 00:00:21.656
Plan hash value: 2160035213
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 762 | 49530 | 5 (0)| 00:00:01 |
| 1 | TABLE ACCESS BY INDEX ROWID| AUSTRALIAN_STATES | 1 | 115 | 0 (0)| 00:00:01 |
|* 2 | DOMAIN INDEX | AUSTRALIAN_STATES_GEOM_SPX | | | 0 (0)| 00:00:01 |
| 3 | TABLE ACCESS BY INDEX ROWID| AUSTRALIAN_STATES | 1 | 115 | 0 (0)| 00:00:01 |
|* 4 | DOMAIN INDEX | AUSTRALIAN_STATES_GEOM_SPX | | | 0 (0)| 00:00:01 |
| 5 | TABLE ACCESS FULL | GUTDATA | 762 | 49530 | 5 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - access("MDSYS"."SDO_ANYINTERACT"("T2"."GEOM","SDO_GEOM"."SDO_BUFFER"(:B1,10000,0.5,'UNIT=M'))='TRUE')
4 - access("MDSYS"."SDO_ANYINTERACT"("T2"."GEOM","SDO_GEOM"."SDO_BUFFER"(:B1,10000,0.5,'UNIT=M'))='TRUE')
Statistics
7 user calls
24576 physical read total bytes
0 physical write total bytes
0 spare statistic 3
0 commit cleanout failures: cannot pin
0 TBS Extension: bytes extended
0 total number of times SMON posted
0 SMON posted for undo segment recovery
0 SMON posted for dropping temp segment
0 segment prealloc tasksThe above can look messy as you add more (SELECT ...) attributes, but is is fast (though can't use in Materialized Views).
/* The set of all cities not in municipalities */
SELECT T1.SPECIES as City,
cast(null as varchar2(42)) as municipality,
cast(null as sdo_geometry) as geom
FROM GUTDATA T1
WHERE NOT EXISTS (SELECT 1
FROM AUSTRALIAN_STATES T2
WHERE SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE')
UNION ALL
/* The set of all cities in municipalities */
SELECT T1.SPECIES as City,
T2.ADMIN_NAME as Municipality,
T2.GEOM as geom
FROM GUTDATA T1
INNER JOIN
AUSTRALIAN_STATES T2 ON (SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE');
762 rows selected
Elapsed: 00:00:59.953
Plan hash value: 2854682795
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 99 | 13450 | 38 (87)| 00:00:01 |
| 1 | UNION-ALL | | | | | |
|* 2 | FILTER | | | | | |
| 3 | TABLE ACCESS FULL| GUTDATA | 762 | 49530 | 5 (0)| 00:00:01 |
|* 4 | DOMAIN INDEX | AUSTRALIAN_STATES_GEOM_SPX | | | 0 (0)| 00:00:01 |
| 5 | NESTED LOOPS | | 61 | 10980 | 33 (0)| 00:00:01 |
| 6 | TABLE ACCESS FULL| AUSTRALIAN_STATES | 8 | 920 | 3 (0)| 00:00:01 |
|* 7 | TABLE ACCESS FULL| GUTDATA | 8 | 520 | 4 (0)| 00:00:01 |
Predicate Information (identified by operation id):
2 - filter( NOT EXISTS (SELECT 0 FROM "AUSTRALIAN_STATES" "T2" WHERE "MDSYS"."SDO_ANYINTERACT"("T2"."GEOM","SDO_GEOM"."SDO_BUFFER"(:B1,10000,0.5,'UNIT=M'))='TRUE'))
4 - access("MDSYS"."SDO_ANYINTERACT"("T2"."GEOM","SDO_GEOM"."SDO_BUFFER"(:B1,10000,0.5,'UNIT=M'))='TRUE')
7 - filter("MDSYS"."SDO_ANYINTERACT"("T2"."GEOM","SDO_GEOM"."SDO_BUFFER"("T1"."GEOM",10000,0.5,'UNIT=M'))='TRUE')
Statistics
7 user calls
131072 physical read total bytes
0 physical write total bytes
0 spare statistic 3
0 commit cleanout failures: cannot pin
0 TBS Extension: bytes extended
0 total number of times SMON posted
0 SMON posted for undo segment recovery
0 SMON posted for dropping temp segment
0 segment prealloc tasksMuch slower but Materialized View friendly.
This one is a bit more "natural" but still slower than the first.
set serveroutput on timing on autotrace on
/* The set of all cities in municipalities */
WITH municipal_cities As (
SELECT T1.ID as City,
T2.ADMIN_NAME as Municipality,
T2.GEOM as geom
FROM GUTDATA T1
INNER JOIN
AUSTRALIAN_STATES T2 ON (SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE')
SELECT T1.ID as City,
T2.Municipality as Municipality,
T2.GEOM as geom
FROM GUTDATA T1
LEFT OUTER JOIN
municipal_cities T2
ON (T2.CITY = T1.ID);
762 rows selected
Elapsed: 00:00:50.228
Plan hash value: 745978991
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 762 | 44196 | 36 (3)| 00:00:01 |
|* 1 | HASH JOIN RIGHT OUTER| | 762 | 44196 | 36 (3)| 00:00:01 |
| 2 | VIEW | | 61 | 3294 | 33 (0)| 00:00:01 |
| 3 | NESTED LOOPS | | 61 | 10980 | 33 (0)| 00:00:01 |
| 4 | TABLE ACCESS FULL | AUSTRALIAN_STATES | 8 | 920 | 3 (0)| 00:00:01 |
|* 5 | TABLE ACCESS FULL | GUTDATA | 8 | 520 | 4 (0)| 00:00:01 |
| 6 | INDEX FAST FULL SCAN| GUTDATA_ID_PK | 762 | 3048 | 2 (0)| 00:00:01 |
Predicate Information (identified by operation id):
1 - access("T2"."CITY"(+)="T1"."ID")
5 - filter("MDSYS"."SDO_ANYINTERACT"("T2"."GEOM","SDO_GEOM"."SDO_BUFFER"("T1"."GEOM",10000,0.5,'UNIT=M'))='TRUE')
Statistics
7 user calls
49152 physical read total bytes
0 physical write total bytes
0 spare statistic 3
0 commit cleanout failures: cannot pin
0 TBS Extension: bytes extended
0 total number of times SMON posted
0 SMON posted for undo segment recovery
0 SMON posted for dropping temp segment
0 segment prealloc tasksFinally, the Pièce de résistance: trick the LEFT OUTER JOIN operator...
set serveroutput on timing on autotrace on
SELECT T1.SPECIES as City,
T2.ADMIN_NAME as Municipality,
T2.GEOM as geom
FROM GUTDATA T1
LEFT OUTER JOIN
AUSTRALIAN_STATES T2
ON (t2.admin_name = to_char(t1.ID) OR
SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE');
762 rows selected
Elapsed: 00:00:50.273
Plan hash value: 158854308
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time |
| 0 | SELECT STATEMENT | | 762 | 92964 | 2294 (1)| 00:00:28 |
| 1 | NESTED LOOPS OUTER | | 762 | 92964 | 2294 (1)| 00:00:28 |
| 2 | TABLE ACCESS FULL | GUTDATA | 762 | 49530 | 5 (0)| 00:00:01 |
| 3 | VIEW | | 1 | 57 | 3 (0)| 00:00:01 |
|* 4 | TABLE ACCESS FULL| AUSTRALIAN_STATES | 1 | 115 | 3 (0)| 00:00:01 |
Predicate Information (identified by operation id):
4 - filter("T2"."ADMIN_NAME"=TO_CHAR("T1"."ID") OR
"MDSYS"."SDO_ANYINTERACT"("T2"."GEOM","SDO_GEOM"."SDO_BUFFER"("T1"."GEOM",10000,0.5,'UNIT=M'))='TRUE')
Statistics
7 user calls
0 physical read total bytes
0 physical write total bytes
0 spare statistic 3
0 commit cleanout failures: cannot pin
0 TBS Extension: bytes extended
0 total number of times SMON posted
0 SMON posted for undo segment recovery
0 SMON posted for dropping temp segment
0 segment prealloc tasksTry these combinations to see what works for you.
Interestingly, for me, the following returns absolutely nothing.
SELECT T1.SPECIES as City,
T2.ADMIN_NAME as Municipality
FROM GUTDATA T1
LEFT OUTER JOIN
AUSTRALIAN_STATES T2
ON (SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE')
MINUS
SELECT T1.SPECIES as City,
T2.ADMIN_NAME as Municipality
FROM GUTDATA T1
LEFT OUTER JOIN
AUSTRALIAN_STATES T2
ON (t2.admin_name = to_char(t1.ID) OR
SDO_ANYINTERACT(T2.GEOM, SDO_GEOM.SDO_BUFFER(T1.GEOM,10000,0.5,'UNIT=M')) = 'TRUE');(I leave it to you to see if you can see why as the LEFT OUTER JOIN seems to be working correctly for me but I am not going to dedicate time to detailed checking of results.)
Note all tests performed on Oracle 11g R2 (11.2.0.1.0)
If you get the answer you want: mark the post as answered to assign points.
regards
Simon -
Query Of Queries : Error When Trying To Fake Left Outer Join
Hi there
I am trying to replicate a left outer join, combining two query of queries using a method I located here
However, I keep getting an error message..
Here is the code I am using....
<cfquery dbtype="query" name="qry">
SELECT *
FROM returnQry, returnQry2
WHERE returnQry.mediumImage = returnQry2.mediumImage
ORDER BY returnQry.name
</cfquery>
<cfquery name="returnQry3" dbtype="#application.mx#">
SELECT *
FROM trackmeanings AS t
</cfquery>
<cfquery dbtype="query" name="endQry">
SELECT name,nameRcd,mediumImage, COUNT(sMessage) AS comments
FROM qry, returnQry3
WHERE qry.name = returnQry3.sNameTrack
UNION
SELECT name,nameRcd,mediumImage, COUNT(sMessage) AS comments
FROM qry, returnQry3
WHERE #qry.name# NOT IN (#QuotedValueList(returnQry3.sNameTrack)#)
GROUP BY name,nameRcd,mediumImage
</cfquery>
When I try to use the query output in a page, i get the error message "Incorrect conditional expression, Expected one of [like|null|between|in|comparison] condition"
Would anyone have any ideas?
Many thanksActually , spoke a little too soon, my query now seems to be outputting duplicates when the value is found on both sides of the union, my group by clause doesnt seem to be eliminating them like it usually does.
My SELECT code now reads
<cfquery dbtype="query" name="endQry">
SELECT name,nameRcd,mediumImage, COUNT(sMessage) AS comments
FROM qry, returnQry3
WHERE qry.name = returnQry3.sNameTrack
GROUP BY name,nameRcd,mediumImage
UNION
SELECT name,nameRcd,mediumImage, 0 AS comments
FROM qry
WHERE qry.name NOT IN (<cfqueryparam
value="#returnQry3.sNameTrack#"
cfsqltype="cf_sql_varchar"
list="yes"
/>)
GROUP BY name,nameRcd,mediumImage
ORDER BY name DESC
</cfquery>
and my ouput...is producing duplicates
<cfoutput query="rc.qryTopTracks" group="name">
#rc.qryTopTracks.name#
</cfoutput>
Would you have any idea of how to eliminate them here? Thanks -
Issue on left outer join query in 10G
Dear Mr./Mrs./Ms. Oracle expertise,
The following query structure can function properly in Oracle 9i, but not work in Oracle 10G.
Please kindly advise what happened in Oracle 10G?
Is it a bug in 10G? If yes, any patch for it?
select a.col1,
a.col2,
a.col5,
b.col3,
b.col4
from t1 a
inner join t2 c on c.col1 = a.col1
left join (select col3
col4
from t3) b
on b.col1 = a.col1
and a.col2 = 'Y' <---------- seems 10G cannot allow this condition
where a.col5 = 123;
Purpose of above SQL
====================
Only those records from t1 table with a.col2 = 'Y' will
do the left outer join to "b" table and get the columns b.col3 and b.col4
Result set in Oracle 9i
=======================
col1 col2 col5 col3 col4
AAA N 111
BBB N 222
CCC Y 333 XYZ OOO
DDD Y 444 QPR 111
Result set in Oracle 10G
========================
col1 col2 col5 col3 col4
AAA N 111
BBB N 222
CCC Y 333
DDD Y 444
Rgds,
Ken ChanDear Schneider,
Sorry that there was a typo in my query.
Below is the revised query.
select a.col1,
a.col2,
a.col5,
b.col3,
b.col4
from t1 a
inner join t2 c on c.col1 = a.col1
left join (select col1,
col3,
col4
from t3) b
on b.col1 = a.col1
and a.col2 = 'Y' <---------- seems 10G cannot allow this condition
where a.col5 = 123;
Thanks.
Rgds,
ken Chan -
LEFT OUTER JOIN, Problem in POST-QUERY TRIGGER
Hi,
Please guide for the following
I wrote below query in POST-QUERY Trigger of a TABULAR DATA BLOCK, having only one text item, called INVENTORY_ITEM
select c.cat||' '||s.subcat||' '||l1.lvl1 ITEM INTO :DATABLOCK.INVENTORY_ITEM
from itemcat c
LEFT OUTER JOIN itemsubcat s on (c.catid = s.catid)
LEFT OUTER JOIN lvl1 l1 on (s.subcatid = l1.subcatid)
When I compile the module an error is generated
*" Encountered the symbol 'LEFT' when expecting one of the following ,; for group having intersect minus order start union where connect ".*
Above query is working fine in ORACLE SQL DEVELOPER .
Any solution please.
Regards,Difference
-
Need to adjust SQL query for left outer join in Crystal Reports 2008.
I need to change this SQL 2005 query.....
SELECT omnicell_anl.DeviceIDsLastMetricTable.member_id, omnicell_anl.DeviceIDsLastMetricTable.[Device Name],
omnicell_anl.DeviceIDsLastMetricTable.Account, omnicell_anl.labeledLastMetrics.PROPERTY_NAME,
omnicell_anl.labeledLastMetrics.latest_monitor_value
FROM omnicell_anl.DeviceIDsLastMetricTable LEFT OUTER JOIN
omnicell_anl.labeledLastMetrics ON omnicell_anl.DeviceIDsLastMetricTable.member_id = omnicell_anl.labeledLastMetrics.member_id
WHERE
omnicell_anl.labeledLastMetrics.PROPERTY_NAME = ?MyProperty
To this query in Crystal Reports Report Writer:
SELECT omnicell_anl.DeviceIDsLastMetricTable.member_id, omnicell_anl.DeviceIDsLastMetricTable.[Device Name],
omnicell_anl.DeviceIDsLastMetricTable.Account, omnicell_anl.labeledLastMetrics.PROPERTY_NAME,
omnicell_anl.labeledLastMetrics.latest_monitor_value
FROM omnicell_anl.DeviceIDsLastMetricTable LEFT OUTER JOIN
omnicell_anl.labeledLastMetrics ON omnicell_anl.DeviceIDsLastMetricTable.member_id = omnicell_anl.labeledLastMetrics.member_id AND
omnicell_anl.labeledLastMetrics.PROPERTY_NAME = ?MyProperty
I can't seem to get the left outer join function of Crystal Reports to emulate the same SQL query in SQL 2005. Any ideas on how I can create this same query in Crystal 2008?
Thanks,
Dominic
Edited by: Dominic Carissimi on Oct 28, 2008 7:55 PM
Edited by: Dominic Carissimi on Oct 28, 2008 7:56 PMIf you want the list of values for command level parameter then you need to add another command like
select PropertyField from table
and delete the links between this command and the existing command.
Now go to field explorer and edit the command level parameter and make it as dynamic and add the property field from newly added command.
Hope this helps!
Raghavendra -
Restriction to Left Outer Joins in PS Query
Hello I am trying to do Left Outer JOin in PS QUERY. I need to do dept tbl, job code tbl and locatable as left outer joins with JOB Table. Looks like in PS QUERY there is a error message saying as below. Can someone has any workaround to achieve this in PS QUERY. I know I can create a View and use that in PS QUERY but BUsiness Users are dependent on IT, so that doesn't work. Also, adding JOB table multiple times works but I am looking for better solution if anyone had come accorss working through PS QUERY Outer JOins.
Windows Internet Explorer
Left outer joins must be joined to the last record in the query. (139,290)
OK
Thanks,
SC.Hi Mike,
According to your description, you want to improve the performance for your DAX query in SQL Server Analysis Service Tabular model, right? Here is a white paper describes strategies and specific techniques for getting the best performance from your tabular
models, including processing and partitioning strategies, DAX query tuning, and server tuning for specific workloads.
http://msdn.microsoft.com/en-us/library/dn393915.aspx
Since this is a complex DAX query, from a support perspective this is really beyond what we can do here in the forums. If you cannot determine your answer here or on your own, consider opening a support case with Microsoft. Visit this link to see the various
support options that are available to better meet your needs:
http://support.microsoft.com/default.aspx?id=fh;en-us;offerprophone
Regards,
Charlie Liao
TechNet Community Support -
SQL Select using LEFT OUTER JOIN returning field values when I expect NULL
I am having problems with this select statement:
SELECT distinct pl.id, th.trip, pc.country, pph.location
FROM people_list pl, people_travelhistory th, people_country pc
LEFT OUTER JOIN people_info pph on pph.id=pl.id and pph.country=pc.country
where people_list.active='Y' and people_list.id=th.id and th.trip = pc.trip;
The criteria is that the pph table may not have no record for that id and country.
The problem is that the pph.location field is returned with data even when no matching record for that id or country exists.
If the record doesn't exist in the pph table, I want pph.location = NULL
What am I doing wrong?
Thanks in Advance!
DeveloperHi, You can try this :
SELECT distinct pl.id, th.trip, pc.country, pph.location
FROM people_list pl, people_travelhistory th, people_country pc
left outer join people_info pph on pph.id = pl.id
left outer join people_country pc on pc.country = pph.country
left outer join people_travelhistory th on th.id = pl.id
where pl.active='Y' and th.trip = pc.trip;
Knowing that you requesting people active that have travelled to their own country.
Regards
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