SQL & PL/SQL :: How To Avoid Multiple Function Calls
Jul 23, 2013
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,
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 have two tables where I have to find the record for Max value of the column sap_pkid for every sap_id as in given table create script. This script is giving correct value but looking for a better way so that when data increses it doesn't hit the performance.
way where max can be avoided or a more tuned query .
Is there a way to avoid multiple UNION statements and get statitc values in single SQL?
select 'Week1' as term from dual UNION select 'Week2' as term from dual UNION .... ....Some functionality like selecting from dynamic table column-rows.... like .. "select term from table(term(rowvalues('Week1', 'Week2'...'Week5')) from dual" or something like that
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'
My need is to pass multiple values as single input parameter into pipelined function. For example - "2" and "3" are values of input parameter "t":
with data as ( select 1 as t from dual union all select 2 as t from dual union all select 3 as t from dual union all select 4 as t from dual union all select 5 as t from dual ) select * from data where t in (2,3)
I am working on the quality center oracle database to write a query that fetches all steps of a test case including the ones having calls to tests. Structure of table is explained below. I've made up an example and attached it as an image to this post. This image also has the expected result of the query I want to write.
Table Name: STEPS (This table contains steps belonging to tests. Some steps are simply calls/links to other tests)
Columns: STEP_ID (primary key - integer) STEP_NAME (char) STEP_DESC (char) ORDER (integer) TEST_ID (reference to table TEST.test_id) [code].......
Referring to the example (see attached image), I'm looking to write a query that gives me all steps (including steps from called tests) of the test - "Empty trash from mailbox" in the correct order.
To start with I can write the following query to get steps of the test - "Empty trash from mailbox". SELECT * FROM steps WHERE test_id = (SELECT test_id FROM test WHERE test_name = 'Empty trash from mailbox')
We have Oracle 8i, 9i, 10g and 11g. I installed oracle client 11gR2 and when I tried connecting to the database, its erroring out saying "ORA-03134 connections to this server version are no longer supported". What client version should I install in order to avoid this error?
I have a query that performs the sum of a field and divides by the number of occurrences, got me a problem because if there are no occurrences would cause a divide by zero error in Query.
The solution I found might not have been the best, but at the time was possible.
I put a Case, when the sum of the number of occurrence is zero then return zero, otherwise performs the division of the sum of the values by the number of occurrences.
select T2.name,sum(T1.area) from (select * from country) T1,T2i wrote very simple just to show you the problem, bu i think here we should add "group by". but is there any way to avoid group by?because i don't want to group any thing!
I have created a procedure which sends mail to the users by using the smtp operation. I am collecting the email id of the users and then concatenating the same using the loop.
Everything is working fine, but if some person is coming multiple times in the loop, then his/her name is shown multiple times in the CC/BCC part (Although mail is sent once), it should be restricted to one time.
what i am doing is:
I have declared id_collector and it is concetenating the email as per the condition loop
........ some code here.... id_collector:=id_collector||email_id||';'; end loop;
Now, I want to check before concatenating that email already exists or not.
Example:
suppose value of id_collector= 'abc@gmail.com;pqr@gmail.com;rst@gmail.com;xyz@gmail.com;' and again if email id comes - 'abc@gmail.com', then it should get rejected.
I think it can be done using reg_exp but I have messed up with that.
i am facing problem with date column.when i am trying to do execute a query this works fine
select null as link,'S'||to_char(DATE_OF_JOIN,'YY'),COUNT(STUDENT) "Blue Acres" from STUDENT_RECORD where PROCESSOR=1 and DATE_OF_JOIN >= to_date('0620' || to_char(sysdate, 'YYYY'), 'MMDDYYYY') and DATE_OF_JOIN < to_date('0920' || to_char(sysdate, 'YYYY'), 'MMDDYYYY') group by to_char(DATE_OF_JOIN,'YY')
and when i am trying the below query its showing the only this year dates its not referring the previous years
select null as link,'S'||to_char(DATE_OF_JOIN,'MMDDYY'),COUNT(STUDENT) "Blue Acres" from STUDENT_RECORD where PROCESSOR=1 and DATE_OF_JOIN >= to_date('1220' || to_char(sysdate, 'YYYY')-1, 'MMDDYYYY') and DATE_OF_JOIN < to_date('0320' || to_char(sysdate, 'YYYY'), 'MMDDYYYY') group by to_char(DATE_OF_JOIN,'MMDDYY')
when i am trying below query its showng the error ORA-01843: not a valid month
select null as link,'Fall'||to_char(to_char(DATE_OF_JOIN,'YY')-1),COUNT(STUDENT) "Blue Acres" from STUDENT_RECORD where PROCESSOR=1 and DATE_OF_JOIN >= to_date('0620' || to_char(sysdate, 'YYYY')-1, 'MMDDYYYY') and DATE_OF_JOIN < to_date('0920' || to_char(sysdate, 'YYYY')-1, 'MMDDYYYY') group by to_char(to_char(DATE_OF_JOIN,'YY')-1)
I'm creating oracle form to allow the user to register a new record in a table, I want to check the duplication in Four tables! which means, the user is able to save the record if it's NOT already registered in the other four tables.By checking P_ID (user parameter). this is my
Declare v_count number; begin select count(*) into v_count ---Checking the 1st table from 1_table where p1_id=:p_id; if (v_count>0) then message ('Duplicate'); [code]....
While I am inserting and updating the values in the oracle database its showing a message 'FRM-40401 - No changes to save.' I don't want this message to be shown. How can I do that?
i have created form. one field is there "Payment_terms" at line level. for that i created LOV containing 3 fixed Payment terms. my requirement is that Avoid the user to select twice the same value from LOV.