Optimizer Cannot Merge A View That Contains Set Operator
Jul 18, 2012
Query -
SELECT *
FROM sysadm.ps_tmtl_post_vw a
WHERE a.month_prepared_for = 'JUNE,2012'
AND a.ca_status = 'P5 CUST GO AHEAD'
[code]...
When I try for the SQL-Tuning sets its throws error that
ADDITIONAL INFORMATION SECTION
-------------------------------------------------------------------------------
- The optimizer could not merge the view at line ID 2 of the execution plan.
The optimizer cannot merge a view that contains a set operator.
I read earlier forum where it says that optimizer unable to interpret the conditions like order by etc etc.Now there is one view which is getting used in the query when I did select * from vw it took more than 16 hrs to complete. (bad view).
Attached File(s)
exec_plan.txt ( 2.06MB )
Number of downloads: 1
view_def.txt ( 14.12K )
Number of downloads: 2
View 5 Replies
ADVERTISEMENT
Oct 18, 2012
I want to know how the Oracle optimizer choose joins and apply them while executing the query. So that I will insure about optimizer join before writing any query.
View 2 Replies
View Related
Aug 19, 2012
I have problem with merging rows into view. I have created "INSTEAD OF" triggers on the view for insert/delete/update of rows. However, the merge is not working and it needs rowid to work. Is there any way how to make MERGE working here ? I must use merge, because I am changing the structure of database used for large java application. And it uses tons of merge commands,changing them to insert/update is inefficient because of development-time and of course resulting execution-time.
create table val_00 (
id number(10),
data varchar2(100),
constraint pk_val_00 primary key (id) validate
) organization index;
[code]....
View 4 Replies
View Related
Oct 26, 2012
I recently had the need create an user friendly view merging two fields on dba_audit_trail, sql_bind and sql_text.Follow example:
SELECT sql_bind ,sql_text FROM DBA_AUDIT_TRAIL;
#1(3):100 , UPDATE PROCESSO_TESTE SET PROC_ID=:custid where PROC_ID=251
transforming in:
SELECT easy_sql_read FROM view or table or other objects for solve this;
UPDATE PROCESSO_TESTE SET PROC_ID=*100* where PROC_ID=251
View 4 Replies
View Related
Jan 25, 2011
I have two tables:
Table 1:
CONTENT_ID number primary key,
URL VARCHAR2(1024) not null,
TITLE VARCHAR2(200) not null
Table 2:
CONTENT_ID number primary key,
URL VARCHAR2(1024) not null,
TITLE VARCHAR2(200) not null
Both tables are the same layout however I need to merge the data to a DB View on demand. What would the SQL look like to join like this?
View 7 Replies
View Related
Sep 10, 2013
I am quiet confused with the optimizer collection stats job on 11g. when run the following query i see the statistics enabled.
SQL> select client_name, status from dba_autotask_client;
CLIENT_NAME STATUS
---------------------------------------------------------------- --------
auto optimizer stats collection ENABLED
auto space advisor ENABLED
sql tuning advisor ENABLED
I can gather statistics manually using DBMS_STATS, but there is no automated gathering of optimizer stats. how can i have system run and collect statistics on a daily bases?
View 1 Replies
View Related
Jun 3, 2013
what is oracle Cost-Based Optimizer? Any material easy to follow?
View 3 Replies
View Related
Jan 22, 2009
how to reduce the cpu cost for a query at query level.
View 10 Replies
View Related
Jul 23, 2013
The full statement is:
SELECT v.key$ FROM VERSION_TABLE v, DOCUMENT_TABLE d, CLASS_TABLE z WHERE
v.documentKey = d.key$ AND
d.classKey = z.key$ AND
z.key$ IN (SELECT zz.key$ FROM CLASS_TABLE zz
START WITH zz.name = 'esDTTemplate'
CONNECT BY PRIOR zz.key$ = zz.parentKey) AND
v.ESGROUP = 'SearchOperatorsMapping' ORDER BY d.name
Now I noticed that the subquery is never used to seed the join: indexes - if any - are used. Otherwise a full table scan is performed.In the example - if ESGROUP is indexed, then it's chosen to start the join evaluation. If not, a full table scan is performed.Is there any way to suggest to the optimizer to use the subquery in case there are no indexes - as a fallback ?
In the above example where VERSION_TABLE contains nearly two million records, the no index solution takes 60 secs. vs. less than 1 sec. in the index case.Wrapping the hierarchical query in a inline view leads to same result.
PS: the execution plan (without index) is:
-------------------------------------------------------------------------------------------------------------
| Id | Operation | Name | Rows | Bytes | Cost (%CPU)| Time
-------------------------------------------------------------------------------------------------------------
| 0 | SELECT STATEMENT | | | | 9 (100)| |
| 1 | SORT ORDER BY | | 1 | 171 | 9 (23)| 00:00:01 |
|* 2 | HASH JOIN SEMI | | 1 | 171 | 8 (13)| 00:00:01 |
[code]...
View 3 Replies
View Related
Oct 14, 2013
I'm looking to see if there is a way (fully expecting it to be an underscore, or two...) to force the optimizer to keep churning until all permutations are exhausted.I'm aware that it, to paraphrase, cuts out when it's spent more time parsing than it would just running it based on it's estimates.
I've got some irritating problems with xml rewrite, xml indexes and access paths/cardinalities etc and I'm really needing the entire thing considered as a one off for debugging this. I've already cranked up the maximum permutations to the max but it's not enough, it shorts out after 5041 permutations (I'd set that to 80000 max).
I know you'd not want to do this in the real world but I cant get the damned thing to run the plan I want in a 10053 so I can see the values it has there. I know I can hint it, but I'm trying to ascertain why it's not even considering it in a "normal" parse.
View 6 Replies
View Related
Sep 20, 2012
In my database auto optimizer stats collection job scheduled. It is successfully running,i am confirming this by viewing DBA_AUTOTASK_JOB_HISTORY. My doubt is whether stats gather job collect statistics when 10%(default value) of data modified in a hole table or table partitions.
Below is the output for user_tab_modification.I am able to see two entry for same table.
SQL> select TABLE_NAME,PARTITION_NAME,INSERTS,UPDATES,DELETES,TIMESTAMP,TRUNCATED from USER_tab_modifications where table_name='DLM_PERFORMANCE_DATA';
TABLE_NAME PARTITION_NAME INSERTS UPDATES DELETES TIMESTAMP TRU
------------------------------ ------------------------------ ---------- ---------- ---------- ----------- ---
DLM_PERFORMANCE_DATA 169812174 0 0 20-SEP-2012 NO
DLM_PERFORMANCE_DATA SYS_P2663580 4946409 0 0 20-SEP-2012 NO
View 4 Replies
View Related
Jul 12, 2013
I need to get create_user_id for different sale_location_id.Also create_user_id field will be having different values.This is part of my big query.I need to add this stmt in that.So taken that part and figuring it out.
create table it(sale_location_id number,create_user_id varchar2(10));
table IT created.
insert into it values(1,'ISRA')
1 rows inserted.
insert into it values(2,'USFA')
1 rows inserted.
select a.sale_location_id,decode(a.sale_location_id,1,a.create_user_id like 'IS%',a.create_user_id like 'U%') create_user_id from it a
given error as:
ORA-00907: missing right parenthesis 00907. 00000 - "missing right parenthesis"
How to write this.
View 5 Replies
View Related
Sep 16, 2010
I have a table in SQL , I am creating a column Of name in it , i want to restrict user to enter name in Capital only ,and i want to create this at table level . I tried Check Operator but failed .
create table my_tab
(U_name varchar2(30) ,
constraint ck_check (U_name = upper(m_name))
/
View 6 Replies
View Related
Mar 15, 2013
Any alternate to the following query.
select * from emp where ename like upper(NVL('%mi%',ename));
Basically I want to search based on string or null.
View 11 Replies
View Related
Jun 28, 2010
I have an query i.e.
I want 3 lines input in 1 line using 2 union operator like
Input:-
'i love playing
football and
volleyball'
i want the output like:-
"i love playing football and volleyball"
solve query using 2 union operator?
View 9 Replies
View Related
Feb 12, 2013
I have a two tables with same column name , I wanted to find different record in table1 when compared with table2
create table table1(col1 number,col2 number,col3 number,col4 number,col5 number);
create table table2(col1 number,col2 number,col3 number,col4 number,col5 number);
insert into table1 values(1,2,NULL,NULL,NULL);
insert into table2 values(1,2,NULL,NULL,NULL);
commit;
select col1 from (select col1,col2,col3,col4,col5 from table1 minus select col1,col2,col3,col4,col5 from table2);
no rows selected
how come i get no rows selected when col3,col4,col5 is having null values but NULL could be anything so
NULL-NULL cannot be equal to zero how is it possible
View 3 Replies
View Related
Jan 19, 2013
i want to know that how can i use like operator with if condition. i m using oracle10g form builder and it's for search purpose .
for example ...
if search string=string2 then
message('Record found');
end if ;
i want to use like '%search string%'.
View 1 Replies
View Related
Feb 28, 2011
1) Can we set a different symbol other than '' for escape operator.
2) If yes, how to see the current escape operator symbol.
3) How to find out the below name with escape operator?
Employee name ----> rama_krishna_raj
View 2 Replies
View Related
Jan 10, 2012
what the difference between IN and EXISTS operator. Why should we use EXISTS operator?
View 1 Replies
View Related
Sep 7, 2011
I have a issue on running the query with quote operator . When I am executing the SQL query I am getting error "Quoted String not properly Ended".
select q'[Oracle's world ]'
from dual
But The following query works.
select q'[It's Oracle's world ]'
from dual
View 4 Replies
View Related
Feb 18, 2013
I have a requirement in SQL that I have to number each row. Hence I thought of using ROWNUM. But the sql query I'm using uses UNION operator. Hence I used like this
select a,b,rownum as 'field1' from table1
union
select c,d,1 as 'field1' from table2
Will the above query solve my purpose?
View 11 Replies
View Related
Jul 30, 2010
The following runs no problem
SELECT
ACCO.SEQUENCE,
ACCO.DESCRIPTION,
MAX (ACCO.AUDIT_DTE)
FROM
PAS.AUDIT_CLINICAL_CARE_OPTIONS ACCO
WHERE
ACCO.AUDIT_DTE < :AuditDate AND
[code]....
However, when I try to add extra conditions to the status' in the sub select i get the error. This is one way I tried:
SELECT
ACCO.SEQUENCE,
ACCO.DESCRIPTION,
MAX (ACCO.AUDIT_DTE)
FROM
PAS.AUDIT_CLINICAL_CARE_OPTIONS ACCO
WHERE
[code]....
I've tried repeating the sub select for each of the extra status parts but everytime i hit the same problem.
View 1 Replies
View Related
Jan 10, 2012
i got the data like
select * from Table1
SNO Name B_MONTH
--------------------
101 A Mar
102 B Jan
103 C Feb
104 D Apr
105 f May
106 G Jun
Select * from Table2
107 H Dec
108 I Aug
109 J Oct
110 L Jul
111 M Sep
112 N Nov
select * from table1 union select * from table2 order by 3
The B_MONTH column is in Varchar2. Expected output should be
Output:
Jan
Feb
Mar
Apr
.
.
.
.
Nov
Dec
View 8 Replies
View Related
Jul 16, 2012
How to replace the like operator for increase the performance. Because it is taking more time and not using the index.
SELECT *
FROM emp
WHERE ename like '%AL';
View 30 Replies
View Related
May 6, 2013
Want to understand difference between Concat function and "||" operator. I am getting the same result for both. Below is the test case for your reference.
Select 'H '||' S' From Dual;
--Output H S
Select Concat('H ',' S') A From Dual;
--Output H S
Select Length('H '||' S') A From Dual;
--Output 6
Select Length(Concat('H ',' S')) A From Dual;
--Output 6
View 5 Replies
View Related
Jun 12, 2012
How we can compare IN operator between two text boxes in form
I have two text boxes on form
control.txt1 - 003
control.txt2 - 001,002,003
On button pressed
if :control.txt1 in (:CONTROL.TXT2) THEN
MESSAGE('1');
MESSAGE('1');
else
MESSAGE('0');
MESSAGE('0');
END IF;
All the time Message is 0 .
View 4 Replies
View Related
Mar 14, 2011
I have a package function which is wrapped and I cannot see the code.The package function raises an user-defined exception when :
SELECT ABC.*
FROM ABC
WHERE ABC.A = PACK.FUNC(ABC.B,ABC.C)
But it does not raise any exception and the query works absolutely fine generating desired results when :
SELECT ABC.*
FROM ABC
WHERE ABC.A = (SELECT PACK.FUNC(ABC.B,ABC.C) FROM DUAL)
View 6 Replies
View Related
Jun 9, 2013
I want to link to blocks using description as there is no relation , for example i have two tables with one field in common called description, and i want to link this field in two tables using like operator.
create table item ( item_code varchar2(12),item_name varchar2(30));
insert into item VALUES('A','HEA160');
insert into item VALUES('B','HEA180');
create table stk (sl_item varchar2(12),sl_desc varchar2(30),sl_qty number);
insert into stk VALUES ('X','HEA160X1000',12);
insert into stk VALUES ('X','HEA160X2000',4);
insert into stk VALUES ('Y','HEA180X3000',10);
Suppose i click on item block item_desc with value on HEA160 all the items similar to that should appear in stk block like 'HEA160X1000' ,'HEA160X2000' , if i click on 'HEA180' on item then 'HEA180X3000' it should come.
View 1 Replies
View Related
Dec 25, 2012
I am using the following query with like 'T_%', i am getting 80 rows out of which the first table_name doesn't even have a beginning part 'T_%'.
the first table name has not started with 'T_', why is it appearing.
*********************************************************************
SELECT 'Truncate table epic500.'||table_name
FROM user_tables where table_name like 'T_%' order by table_name;
*********************************************************************
output:
Truncate table epic500.TEMP_ENC_DEL
Truncate table epic500.T_ACCOMMODATION_CODE
View 4 Replies
View Related
Apr 18, 2013
I am trying to use the REGEXP_LIKE and I am getting ORA-00920: invalid relational operator.
I have run very simplified code to try to sort it out but no success:
SELECT id, address
FROM test_lob_tab
WHERE REGEXP_LIKE(address,'^A');
select 1 from dual where regexp_like('123', '^[0-9]$');
same result from both.
I am using Oracle 11 and freetoad 11.
View 5 Replies
View Related
