I have a function that is being called three time using UNION and wanted to know if this can be improved to just one call while incorporating all the table joins.
select field1,fdate,fname,username,stepnum from ( SELECT M.FIELD1, TO_CHAR (M.FIELD_DATE, 'MM/DD/YYYY HH24MISS') AS FDATE, M.FIELDNAME AS FNAME, M.USERNAME,
We have to load 10 million rows in a table from another table based on the multiple joins. How much tablespace size we allocate to the table and for performance point of view how much should be the SGA size.
I am doing some ETL that I need to run "faster". The function in which I am interested removes low ascii code characters from a string. Please see the timing below and the definitions of the of the functions below those. I am selecting just the first 100K rows for testing and timing purposes only. In production, we are doing millions of records several times a day, thus the desire for "faster". Selecting with no functions is very fast, 0.2 seconds. We would really really want to convert at least 100K rows per second.
The best I can do is get it down to around five seconds using clear_nonlegal. That is, ironically, the one that I thought would be the slowest. It's making thirty-one calls to REPLACE. I would have guessed that the other two would be much faster. I am guessing that REPLACE is just much better optimized than TRANSLATE and, of course, my homegrown PL/SQL, which isn't optimized at all.
So, my question is thisif there is a way I can optimize my custom function, or maybe know of a better already optimized standard SQL and/or Oracle function that would do the job? I am thinking about trying to use a Java stored procedure, but I have never done that before, I am not currently set up for it, if it would be any faster anyway. Is Java faster with string manipulation the PL/SQL? I am thinking it would be really fast to call a C method,
Connected to Oracle Database 11g Enterprise Edition Release 11.2.0.3.0 Connected as aggs@AGGSTEST
SQL> set timing on SQL> SELECT COUNT(*) 2 FROM (SELECT DISTINCT keyword_dest_url 3 FROM se_keywords sek
I have attempted to use the analytic function to keep a running total of the count of active calls based on the connect and disconnect times given for each record row.
I'm putting together a path to select a revision of a particular novel:
SELECT e.documentname, e.Revision, e.VersionNumber FROM Catalog, BookInCatalog INNER JOIN NovelMaster INNER JOIN HasNovelRevision INNER JOIN NovelRevision e LEFT JOIN NovelRevision s
[code]...
My goal here is to select the earliest revision from the set of Novel revision. The revision field is a string.
When I run the query for Novels that have multiple revisions I get multiple records. If there is just one record I only get one row. If there are two I get four (two for each revision). As the number of revision increases it looks like it just mushrooms from there.
One other challenge is the format of the revision- a revision sequence could look like this:
A B C1 C2 C D E1 E
So there are "intermediate" revision referred to by a number. In this case I would select revision A, but if I had:
A1 A B1 B
I would want to select B. I am pretty sure that all the revision are stored in the db in order.Notice that the comparison operator ">" is used in e.Revision > s.Revision. I initially though it should have been "<" because we want to select the initial but the other way gives me the right order (though the wrong results).
i have two tables having some fields .In table table1 there is 2 lakh rows and in table table2 there is 3 lakh rows.In both table 2 lakh rows are common.I have to find those 1 lakh rows which are distinct but the condition for this i have to use only sql joins not minus or subquery or any function.
when i doing this.select t2.id,t2.name,t2.loc from table1 t1,table2 t2 where t1.id <>t2.id;
I have two large tables(rptbody and rpthead) which has over millions or even more records. Below is the table schema
describe rpthead Name Null Type --------------------------- -------- ------------- RPTNO NOT NULL NUMBER RPTDATE NOT NULL DATE RPTD_BY NOT NULL VARCHAR2(25) PRODUCT_ID NOT NULL NUMBER [code]...
What I want is getting all data if the referenced RPTNO belongs to a particular product_id from rptbody table, here's the sql
SELECT t0.LINENO, t0.COMMENTS, t0.RPTNO, t0.UPD_DATE FROM RPTBODY t0 WHERE ( t0.RPTNO IN ( SELECT t1.RPTNO FROM RPTHEAD t1 where t1.PRODUCT_ID IN ('4647') ) ) ORDER BY t0.LINENO
Since the result set is pretty large, so my application(think it as c couple of jobs, each job should be finished in a time window) can only process a subset of all data, so I need pagination so that the next job can continue the processing until all data is processed, below is the SQL with pagination
select * from ( select a.*, ROWNUM rnum from ( SELECT t0.LINENO, t0.COMMENTS, t0.RPTNO, t0.UPD_DATE FROM RPTBODY t0 WHERE ( [code]....
As you can see each query will take 100 rows from the db. The problem for now is that the query taking too much of time(10+ mins), I know the slowness is due to "ORDER BY t0.LINENO", but it's required for pagination.
Now, I am trying to come with an alternative. My first thought was to use materialized views with Fast Refresh - refresh only changed rows. This might not even work because there are many contraints when using Fast refresh. I am in the process of learning their data model so I do not know much.
My Oracle DB 10g R2 running on AIX 5.3 OS. When I am shutting down the oracle I see that it is waiting for complete the active calls and I determined that these active calls/processes are from remote machines.
When I try to run this ps -ef as shown below, it shown me number of oracle process with LOCAL=NO
I have a function that returns the total sum of an account. From reports I call the function passing the account code. The function sums the values for that specific account code and returns the value. In my function I have the following code :
where account_code = P_CODE.
Eg. The value of :P_CODE is 'CS'.
I now want to pass multiple account codes ('CS','TV',LJ') to the function. How do I change the IN clause in the function to accommodate multiple values.
I have tried using the instr function, but it does not work. eg. AND instr(o.ACCOUNT_CODES,','||P_CODE||',') > 0
I've used PIPELINED FUNCTION and I've no issues in using this. Just wanted to know is there a way so that I don't need to pipe each row separately and I can pipe a set of rows at once.
Like we use BULK COLLECT INTO to fetch multiple rows at once instead of fetching one row using SELECT INTO.
I am using: Desktop / Discoverer 4.1 / Windows XP.
I am attempting to add a new calculated column and have had some success with the CASE function but need to add additional criteria.
What I have that works is:
SUM(CASE WHEN Expenditure Type = 'Supplier Rebates' THEN Total Spend Plus Commit ELSE 0 END)
What I need to add are a few additional criteria. I attempted and failed with a few variants of this:
SUM(CASE WHEN Expenditure Type = 'Supplier Rebates' AND Capitalizable = 'Y' AND Task Owing Company = '534' OR '915' THEN Total Spend Plus Commit ELSE 0 END)
The three criteria points that I am looking to includea are:
•Expenditure Type = 'Supplier Rebates' •Capitalizable = 'Y' •Task Owing Company = '534' OR '915'
I have an already populated table that refers to a wrong foreign key in another table. I have table abc that has the column fk_id. this column currently refers to column x_id1 in the table abc while it should refer to column x_id2 in xyz. I am trying to replace the data but I guess I miss something in the logic or the right way of doing it:
commit; insert all into abc values (10,'ab1',1) into abc values (11,'ab2',2) into abc values (12,'ab3',5) into abc values (13,'ab4',7) into abc values (14,'ab5',9) into xyz values (1,1,'d1') into xyz values (2,2,'d2') into xyz values (5,3,'d3') into xyz values (7,4,'d4') into xyz values (9,5,'d5') select * from dual; commit;
--this following select returns 5 rows
select * from abc, xyz where abc.fk_id = xyz.x_id1;
-- the following update only updates 3 rows and sets the other 2 -- to null!
update abc set fk_id = (select x_id2 from xyz where xyz.x_id1 = abc.fk_id); commit;
I am attempting to select back multiple values for a specific key on one row. See the example below. I have been able to use the sys_connect_by_path to combine the fields into one field but I am unable to assign them to fields of their own. See the example below
TABLE DETAILS: Policy id plan name 111 A Plan 111 B Plan 111 Z Plan 112 A Plan 112 Z Plan
My desired result is to be able to show the output as follows
Policy ID Plan_1 Plan_2 Plan_3 111 A Plan B Plan Z PLan 112 A Plan Z PLan
Name Null Type --------------------------- -------- ------------- RPTNO NOT NULL NUMBER RPTDATE NOT NULL DATE RPTD_BY NOT NULL VARCHAR2(25) PRODUCT_ID NOT NULL NUMBER
describe rptbody
Name Null Type ------------- -------- ------------- RPTNO NOT NULL NUMBER LINENO NOT NULL NUMBER COMMENTS VARCHAR2(240) UPD_DATE DATE
The fact is that we store some header in RPTHEAD and store real data in RPTBODY, the question is that if I use below SQL to query all data for a 'PRODUCT_ID'.
SELECT t0.LINENO, t0.COMMENTS, t0.RPTNO, t0.UPD_DATE FROM RPTBODY t0 , RPTHEAD rpthead WHERE ( t0.RPTNO = rpthead.RPTNO AND t0.UPD_DATE>=to_date('1970/01/01 00:00:00','YYYY/MM/DD hh24:mi:ss') AND rpthead.PRODUCT_ID IN ('4647') )
I do not want to have 'ORDER by' clause since data set is too large, the sorting takes long time, is there any way to get the result rows in the order sorted by RPTNO? We have the index for RPTNO on RPTBODY.
In forms 11 g, whenever, We did any menu change, and deploy in server, same changes are not reflecting in clients machine immediatly. I even stop forms services and restart.After some time... generally after 1 day, it reflect the new changes.In forms 10G, I never face this issue. As soon as i close the old menu and re-open, new changes reflect.
I am facing a simple problem, but could not resolve as yet, i want to replace two string 'M/S' and ' " ' with null, i know this command SELECT REPLACE(' " M/S Private linker " ','M/S',NULL) FROM dual Which command i should use
