Query Not Picking Function Based Index
Apr 3, 2012
One of our query is not using function based index, the required priv is granted to the user executing the query and also tables stats are gathered? what could be the reason for the query to not to pick the FBIndx? the table is a huge one having million of records, is it that CBO thinks that not picking FB indx is the best execution plan? let me know how can we make the query use the FB indx, also there is a restriction that we cannot force it using hints.
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Jun 15, 2012
Is anyway to create function based index for group function columns.
For example
select max(timestamp),min(age),averge(sal).... ... .. from tab;
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Jun 27, 2011
I have a table which sees a lot of use for queries
CREATE TABLE CASE_STAGE
(
ID NUMBER(9) NOT NULL,
STAGE_ID NUMBER(9) NOT NULL,
CASE_PHASE_ID NUMBER(9) NOT NULL,
"CURRENT" NUMBER(1) NOT NULL,
--and other columns
)
ID is a primary key
CASE_PHASE_ID is a foreign key
"CURRENT" should only ever have values of 0 or 1. When it has a value of 1 it is unique for that CASE_PHASE_ID
What I have tried that doesn't work is
create unique index case_stage_F_IDX1 on case_stage("CURRENT", case_Phase_id) which gives me
ORA-01452: cannot CREATE UNIQUE INDEX; duplicate keys found
What is the correct syntax, something like ("CURRENT"=1,case_phase_id) seems right but fails with an error about a missing bracket. Do I need to use a CASE statement here?
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Jun 22, 2011
I have created a function based index(FBI) with trim(header_date), but when i query the table by passing the hardcoded date, it is not working and i have to manually apply trim to get the result?
my query after applying FBI is
select * from abc where header_date = '21-JUN-11', no results are returned and when i apply trim to header_date it works fine .
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Feb 22, 2012
I have a table which has 4M records
This table has a query where one of the condition is
AND STATUS <> 'C'
Now the data is as following
select count(*) record_count, status from new_business group by status;
record_countstatus
4298025C
15N
13Q
122S
I want to know if following index would be useful in this case while the condition in where clause is
"AND STATUS <> 'C'"
create index nb_index_1 on new_business(case when status in('N','Q','S') then 1 else NULL end);
Or
create index nb_index_1 on new_business(case when status ='N' then 'N' when status='Q' then 'Q' when status='S' then 'S' else NULL end);
I tried it on a sample table but the index is simply not picked up even when hinted following are the db level settings
query_rewrite_enabled string TRUE
query_rewrite_integrity string enforced
I tried it 'query_rewrite_integrity' with 'trusted' as well .
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Jul 2, 2010
Using oracle 10g R2 on sun-solaris 10 (sparc-64) Well in the MIS system we have lot of ad-hoc queries coming up. We have proper indexing. Say an example which runs very slow;
SELECT GLKCO, GLDCT, GLDOC, GLDGJ, GLJELN, GLEXTL, GLPOST, GLICU, GLICUT, GLDICJ, GLDSYJ,
GLTICU, GLCO, GLANI, GLAM, GLAID, GLMCU, GLOBJ, GLSUB, GLSBL, GLSBLT, GLLT, GLPN, GLCTRY, GLFY, GLFQ,GLCRCD, GLCRR, GLHCRR, GLHDGJ, GLAA, GLU, GLUM, GLGLC, GLRE, GLEXA, GLEXR, GLUPMJ, GLUPMT, GLBCRC, GLCRRM, GLACR, GLAN8
FROM "PRODDTA"."F0911"
WHERE GLUPMJ <> 0
AND TO_DATE('1 JAN' || (19+substr( GLUPMJ , 1, 1)) || substr( GLUPMJ ,2,2)) + substr( GLUPMJ , 4, 3 ) -1 BETWEEN SYSDATE - 365 AND SYSDATE
[code]....
Here GLUPMJ already indexed so the second query returing an index scan but the first query does a FTS naturally.Now even if I plan to create a function based index on 'the bold highlighted' but how.
create index glupmj_idx on f0911(TO_DATE('1 JAN' || (19+substr( GLUPMJ , 1, 1)) || substr( GLUPMJ ,2,2)) + substr( GLUPMJ , 4, 3 ));..Error If I don't use a FBI my query will result in FTS.
1> how to create a FBI here in this case
2> In MIS systems where 'n' no of ad-hoc queries can come up, how to avoid FTS.
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Jun 27, 2013
It is not possible to run SHRINK SPACE against a table with a function based index. This is documented, and I've tested on the current release. I've reverse engineered it a bit, and the issue is in fact that you cannot SHRINK SPACE if there is an index on a virtual column:SQL> SQL> create table t1(c1 number, c2 as (c1*2)) segment creation immediate;
Table created.
SQL> alter table t1 enable row movement;
Table altered.
SQL> alter table t1 shrink space;
Table altered.
SQL> create index i1 on t1(c2);
Index created.
SQL> alter table t1 shrink space;
alter table t1 shrink space
ERROR at line 1: ORA-10631: SHRINK clause should not be specified for this object.
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Nov 19, 2010
I have a query which had a join:
a.c1=b.c1 and a.c2=@var
where @var is user supplied input at runtime...We had a index on a.c2 . The CBO would use this index to generate an opitimised query plan.We found some records from table "b" were dropping due to inner join. So we made a change in join. It'd be like
a.c1(+)=b.c1 and nvl(a.c2,@var)=@var
This query is no longer using the index, instead its doing a full table scan causing the query to slowdown.I have tried creating index on nvl(a.c2,'31-dec-9999')
But the CBO won't use it.Anyway to create index on this col so that full table scan can be avoided?
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Mar 6, 2012
My Oracle procedure works on two parameters, file type and file name.
exec xml_trans.load_xml('OMG','Sample.xml');
First parameter is xml file type and second parameter is xml file name. XML file is generated by by a web service and keep in a particular location.
Now the requirement is my procedure should pick up the in parameters, once the xml file is generated and my procedure should be running as per schedule. I can execute the procedure in schedule but how can i pick the file name and pass to procedure as soon the xml file is generated?
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Jul 22, 2010
I want a function that'll execute a query and return the whole table record then i need to somehow pick a column in that record and return the data in that column
So like
function something(p_param varchar2)
return table_record
something('blah).employee_number
where employee_number is a column in that table
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Mar 29, 2012
I have noticed a very questionable phrase on an article updated in 2011: "Oracle SE may allow you to create a function-based index, but you must pay for an EE license to use FBI's." [URL] Is this true? I have tested a FBI on my SE and works just fine.
Connected to:
Oracle Database 11g Release 11.2.0.3.0 - 64bit Production
SQL> create table t ( col varchar2(10));
Table created.
SQL> create index t_idx on t(upper(col));
Index created.
SQL> insert into t values('a');
[code]....
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Jun 26, 2012
I have the below SQL with cust_id is indexed
DELETE FROM ALERT WHERE TRIM(CUST_CD)=TRIM('100350378');
Output of the plan table is
OBJECT_NAME OPTION COST
ALERT 1866
ALERT BY INDEX ROWID 1866
DELETE FROM ALERT WHERE CUST_CD=TRIM('100350378');
Output of the plan table is
OBJECT_NAME OPTION COST
ALERT 3
ALERT BY INDEX ROWID 3
how to use trim on indexed column.
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Apr 14, 2012
I have a requirement where the user input values will be passed as comma separated string to backend, which is queried against the table using instr. But the index present on the table is not using the index , due to the instr function.How can I create a index in such a way that The instr function uses it.
CREATE TABLE TEST_IDX
(
CCN VARCHAR2(10 CHAR),
SKU_NUM VARCHAR2(10 CHAR),
MOD VARCHAR2(10 CHAR),
SKU_STATUS VARCHAR2(2 CHAR),
RPT_FLAG VARCHAR2(2 CHAR),
CYCLE_AS_OF_DATE DATE,
SMP_IDENTIFIER NUMBER,
MEASURE_NAME VARCHAR2(100 CHAR)
);
CREATE INDEX TEST_IDX1 ON TEST_IDX
(CCN, SMP_IDENTIFIER, MOD, CYCLE_AS_OF_DATE, RPT_FLAG,
MEASURE_NAME);
The below query is going for full table scan due to this.
select * from test_idx where (INSTR (','||'E10000'||',', ',' || ccn || ',') <> 0 OR 'E10000' = 'DEFAULT')
and mod='90396' and rpt_flag='O' and smp_identifier=2
how to recreate the above index so that these queries uses this index.
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Nov 4, 2010
I have the following query with analytic function but wrong results on the last column COUNT.
1)I am getting the output order by b.sequence_no column . This is a must.
2)COUNT Column :
I don't want the total count based on thor column hence there is no point in grouping by that column. The actual requirement to achieve COUNT is:
2a -If in the next row, if either the THOR and LOC combination changes to a new value, then COUNT=1
(In other words, if it is different from the following row)
2b-If the values of THOR and LOC repeats in the following row, then the count should be the total of all those same value rows until the rows become different.
(In this case 2b-WHERE THE ROWS ARE SAME- also I only want to show these same rows only once. This is shown in the "MY REQUIRED OUTPUT) .
My present query:
select r.name REGION ,
p.name PT,
do.name DELOFF,
ro.name ROUTE,
[code]...
My incorrect output[PART OF DATA]:Quote:
REGIONPT DELOFF ROUTE THOR LOC SEQ COUNT
NAASNAAS MAYNOOTHMAYNOOTHR010 DUBLINRD CEL 1 1
NAASNAAS MAYNOOTHMAYNOOTHR010 NEWTOWNRD CEL 2 1
[code]...
My required output[PART OF DATA]-:Quote:
REGIONPT DELOFF ROUTE THOR LOC COUNT
NAASNAAS MAYNOOTHMAYNOOTHR010 DUBLINRD CEL 1
NAASNAAS MAYNOOTHMAYNOOTHR010 NEWTOWNRD CEL 1
NAASNAAS MAYNOOTHMAYNOOTHR010 PRIMHILL CEL 1
[code]...
NOTE :Count as 1 is correctly coming.But where there is same rows and I want to take the total count on them, I am not getting.
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Oct 24, 2013
Oracle 11g databaseidval1val2100a110b120c200a220b
WITH input AS
(SELECT 1 id
[Code].....
input; Output:idval1val2assigned_number100a0110b0120c2200a0220b1 The dense numbering sequence should be assigned to each row based on id and val1 column. For a given Id, the numbering only starts after val1 > 1 till then the assigned_number will be zero.
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Dec 5, 2012
I have a dynamic query stored in a function that returns a customized SQL statement depending on the environment it is running in. I would like to create a Materialized View that uses this dynamic query.
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Jun 4, 2013
I have a requirement to list the data month wise dynamically where month data is also in the same table, hopefully the below posts should bring more clarity to my requirements.
1. Table creation:
Create table T1 (account_no varchar2(15), area_code varchar2(2), bill_month date, consumption number);
2. List table content:
select * from T1;
account_no area_code bill_month consumption
Q00001Q31-Jan-12125
Q00002Q31-Jan-1265
Q00003Q28-Feb-12219
Q00004Q28-Feb-12805
Q00005Q28-Feb-1254
Q00001Q31-Mar-12234
Q00002Q31-Mar-12454
Q00003Q31-Mar-12232
Q00004Q30-Apr-1221
Q00005Q30-Apr-12218
Q00001Q30-Apr-1254
Q00002Q31-May-1219
Q00003Q31-May-1287
Q00004Q30-Jun-12187
Q00005Q30-Jun-1278
so on......so on......so on......so on......
3. Expected output:
account_no area_code Jan-12 Feb-12 Mar-12 Apr-12 May-12Jun-12Jul-12Aug-12Sep-12Oct-12Nov-12Dec-12
Q00001 Q 125 548 2345487423154821518738721512
Q00002 Q 65 127 45487819357831585683152878
Q00003 Q 545 219 2328738735188745897313
Q00004 Q 78 805 1221218187885718387389787138
Q00005 Q 541 54 2621878778386538698182
With the conventional query I hope this is impossible,
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Jul 18, 2012
Query
SELECT case.case_objid FROM clrods.case@clrods.equant.com case, table_x_cwp_tickect_details_vw t WHERE CASE.case_condition_cd IN ('OPEN', 'OPEN-DISPATCH', 'OPEN-REJECT', 'OPEN-RETURNED') AND case.case_type_cd in ('CUSTOMER FAULT', 'CHRONIC','SCHEDULED ACTIVITY','PROBLEM') AND ROWNUM <= 500 AND case.case_objid = t.ticket_objid AND ( ( case.account_id = '672286' ) ) ORDER BY case.case_id DESC
From PROD
Plan
SELECT STATEMENT HINT: FIRST_ROWS Cost: 2,629 Bytes: 221,500 Cardinality: 500
37 SORT ORDER BY Cost: 2,629 Bytes: 221,500 Cardinality: 500
36 COUNT STOPKEY
[code]...
From DEV platform
Plan
SELECT STATEMENT HINT: FIRST_ROWS Cost: 591 Bytes: 61,134 Cardinality: 138
37 SORT ORDER BY Cost: 591 Bytes: 61,134 Cardinality: 138
36 COUNT STOPKEY
[code]...
1. Index is rebuild
2. stats are up to date
3. Redef on table is done.
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Jun 27, 2013
I want to get the SQL queries based on SQL_ID.I have tried the following query,but I am not getting full query.
SET linesize 132 pagesize 999
column sql_fulltext format a60 word_wrap
break on sql_text skip 1
SELECT REPLACE (TRANSLATE (sql_text, '0123456789', '999999999'), '9', ''),sql_id
FROM dba_hist_sqltext s
WHERE s.sql_id = '7tvurftg8zryb';
One of my friend said use grid to get full query text. how to use grid ,else any other method to get the full query based on SQL_ID.
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Jun 21, 2012
oracle: 10.2.0.5.7...I can get this to work, but not the way the docs seem to say. I am wondering if I am reading the docs wrong or missing something.
The docs seem to say to get a query to run in parallel using an index you use the PARALLEL_INDEX hint. This doesn't seem to work for me. I have to do one of the following
1. change the parallel degree with an alter index, then use the PARALLEL hint (parallel index hint does nothing in this case)
2. use both the parallel_index and parallel hint
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Aug 14, 2011
is the definition of my table :
CREATE TABLE DATEFETC
(
ID VARCHAR2(10 BYTE),
DT DATE
)
And these are the data that are available,(select * from DATEFETC)
IDDT
00108-09-2011
00208-10-2011
00308-11-2011
That's fine.
Now i am executing this query ,but this is returning no rows.Why ?
select * from datefetc where dt between to_date('08-08-2011','mm-dd-yyyy') and to_date('08-12-2011','mm-dd-yyyy')
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Jun 12, 2012
Haw to sort the data based on financial year.
For example Indain Fiscal year 01-Apr-2010 to 31-Mar-2011
Apr2010 -1
May2010 -2
.
.
.
.
Feb2011-11
Mar2011-12
I had given a query..for Quarter idendification
SELECT distinct
'Qtr'
|| CASE
WHEN PERIOD BETWEEN TO_DATE ('01-04-2010', 'DD-MM-YYYY')
AND ADD_MONTHS (TO_DATE ('01-04-2010', 'DD-MM-YYYY')-1, 3)
[code].....
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Jun 16, 2011
I have two tables. By joining these two tables, I need to update a field in table1.
UPDATE table1
SET table1.FLAG = 'Fixed'
where table2.lastname = table1.lastname
and table2.status in ('fulltime','parttime')
I keep getting error 'table1.lastname' is invalid identifier.
I can't understand the error message. I made sure that the fields exist.
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Sep 10, 2013
In the below Table Structure, TB_Vehicles is the Master table and TB_Cars, TB_Bikes, TB_Cars are Satellite tables which hold more info about respective vehicles.
I want users to search using the Name. So, when users enter Name as 'Access', my query should give all information about that vehicle, including that from Satellite Tables (using both TB_Vehicles and TB_Scooters).
SELECT *
FROM TB_Vehicles
WHERE V_NAME = 'Access';
Similarly, if user enters 'Linea', it should give info from TB_Vehicles and TB_Cars tables.
So, with V_NAME as input, I'll find V_TYPE from TB_Vehicles table, and using that, I need to identify which satellite table, I need to join to retrieve more info.
Do I need to use CASE or DECODE to achieve this?
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Sep 3, 2010
I have already created large no of indexes on my Database without specifying specific tablespace, now I would like to move all the created indexes into particular tablespace.
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Jun 6, 2013
I have the below query for which ename column has an index. As of my knowledge below queries 1st and 2st will not use index. Hence i used the 3rd statement and that too its not using the index. Finally i used the 4th query, but even the 4th query is not using the index. Then how do i make this query to use my index??? Do i need to create a function based index for this?
1. select * from emp where ename !='BH' ;
2. select * from emp where ename <> 'BH';
3. select * from emp where ename not in ('BH');
4. select * from emp where ename < 'BH' or ename > 'BH';
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Dec 17, 2012
Suppose i have two columns ID and Status (or any number of columns ) belongs to table customer. Now I want to create below index
Ex. create index test1 on customer (ID , Status )
But before creating this index i want to check that whether there is already index on these 2 columns ? May be by other name ?
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Jun 10, 2011
I'm using Oracle 10g.
Question: How can I write query to return just ID only if all the codes for that ID end in 6.
If I use
SQLselect id from table_a where code like '%6'
then I also get ID=1, which I don't want.
TABLE_A
ID code
=======
1 100
1 106
2 206
3 306
3 336
4 400
Desired Result
ID
==
2
3
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Feb 20, 2012
I have a table with following values in a column
Table A
col1
10
35
20
25
I need to form a query which will take these four values in rownum part and split the records into 4 groups in Table B.
Table B- 90 records (10 + 35 + 20 + 25)
Now for example, the Table B is having emp no, order by ascending and i need to split into 4 groups,
with first group having start value -1 and end value -10
second group - start value -11 and end value-45
third group - start value -46 and end value -65
fourth group - start value - 66 and end value-90
one way i can do it by using union and count, which was a bit tedious if the no. of group goes upto 10.
note that the values in Table A is dynamically changing, so not able to hard code values.
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Aug 18, 2013
find the logic to query data based on a condition like..I am having a table dummy
USERNAME RESP_NAME FUNC_NAME MESSAGE
-------- --------- ------------------ ------------
TEST1 SYS_ADMIN CONCURRENT_PROGRAM AAAAAAAAAAAA
TEST1 SYS_ADMIN % BBBBBBBBBBBB
TEST1 % CONCURRENT_PROGRAM CCCCCCCCCCCC
TEST1 % % DDDDDDDDDDDD
% SYS_ADMIN CONCURRENT_PROGRAM EEEEEEEEEEEE
% SYS_ADMIN % FFFFFFFFFFFF
% % CONCURRENT_PROGRAM GGGGGGGGGGGG
% % % HHHHHHHHHHHH
The above 8 are the possible ways to key in the data using a form.The logic is like based on a particular condition the message should display in the report.If they specify a particular USER and RESP_NAME and FUNC_NAME then it should display AAAAAAAAAAA (This should take priority first). The priority is in order the default should be the last one.
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