SQL & PL/SQL :: Get_hash_value Generated No Unique Values
May 8, 2012
We are using the function dbms_utility.get_hash_value to create a unique identifier, the hash is created based on statement of creating an index. We see that for a different statement is being generated the same value, which in this cause errors because this value must be unique.
The Hash is to be calculated as follows HASH_VALUE = dbms_utility.get_hash_value (sql_text, a 10000)
We are using the correct the hash function or should we use another way to generate unique values?
Objective: I need to compile a final string by concatinating the unique values from different strings.
Here is the script to create tables and data.
Create table temp_acronyms(id number, acronym varchar2(30); insert into temp_acronyms values(1, 'ABC'); insert into temp_acronyms values(2, 'DEC//NOFO'); insert into temp_acronyms values(3, 'CBK//FO TO USA'); insert into temp_acronyms values(4, 'DEC//NO ENTRY'); insert into temp_acronyms values(5, 'ABC//NOFO');
COMMIT;
select * from temp_acronyms;
ID ACRONYM --- -------- 1 ABC 2 DEC//NOFO 3 CBK//FO TO USA 4 DEC//NO ENTRY 5 ABC//NOFO
I need to store all the unique strings from the acronyms for id's 1,2, 3, 4 and 5 into a variable. doesn't matter even if it is through database procedure.
I have a table which stores customer ID and price lists assigned to those customers. Each price list can have multiple customers assigned to them. So for example
Customer APrice_List1 Customer BPrice_List1 Customer C Price_List2 Customer D Price_List3
Now I am trying to write a SQL statement to return just pricelists which contain just ONE customer (so in the above example would just return Price_list2 and Price_List3).
I don't want to generate row_number for unique values 'C' and 'E' in below query.
SELECT NAME, ROW_NUMBER() OVER (PARTITION BY NAME ORDER BY NAME) FROM (SELECT 'A' NAME FROM DUAL UNION ALL SELECT 'A' FROM DUAL UNION ALL SELECT 'A' FROM DUAL
[code].....
Means row_number should be NULL for unique values.
Personally, I don't need the top value(s), but it would be nice.I was trying a few routes with rownum, and I can get it to pull 1 set of pairs with a where location= condition, but I can't seem to successfully combine the two.
A B ---------- ---------------------------------------- 1 Hello 2 Hello 3 No Hello 4 No Hello 5 Hello 6 Hello 7 Hello
I want to print the output of this table as -->>
A B ---------- ---------------------------------------- 1 2 Hello 3 4 No Hello 5 6 7 Hello
To make it more clear, I just want that whenever the value f column "B" changes then only its value should be printed, else it should be NULL. And if "B" has same value for all the records then the value of "B" should be printed at the last.
I am facing a problem in leave_form report! want to show employee's previous leaves detail (leavedate,leavetype), i don't want to show leavetype 'PPP' repeating frame type is Across/Down, there are 22 records of leavetype 'PPP' and one record of leavetype 'CL'
problem is report is showing 22 records of leavetype 'CL' of same leavedate!
i want that report should show the actual leavedate and leavetype records.using 9i database 6i developer server2003
For leavetype
FUNCTION Cf_1formula RETURN CHAR IS v_leavetype CHAR(40); BEGIN SELECT LT.description INTO v_leavetype FROM hrm_attendance L, hrm_leavetype LT, hrm_employees E [code]....
In literal terms, I'm interested in two fields, I'll call them Field A and Field B. I want to find all situations where a single unique value of Field A has both values Z AND X in Field B (not either or, but both together).
To go into some detail -
I need to make a query that finds ONLY occurrences where one employee id has a certain set of values together (without going into specifics, I'll say PermissionA, PermissionB, PermissionC). I can easily make a query that returns all user id's and all permissions belonging to them, and I can use criteria to filter the results to Permission A B and C only so as to exclude other permissions from getting returned (since there are hundreds),
however my objective is to get ONLY results where the same employee ID has all of those permissions (not just any one or two of the three). However, I don't want to have any criteria that limits the employee ID (I want to search all employee id's, and get a list of those with permissions a and b and c, not just any combination thereof, but all of them). I'm currently able to organize the output using a pivot table by employee id > role,
so that I can easily look at each employee and the roles they have, but I want to undertake a project that will involve searching a much larger number of employees (a # that makes it impractical for me to look through the list, I need to have a query that limits the results to the combinations that I'm looking for, as in this example - permission a b and c together).
In my form i have a multi record block which is based on a table in which i am performing insertion, deletion, updation.
My requirement is as below,
While saving a records i want to check distinct value of specific item can not be greater than some value say 2. Then only my records should be saved. I am planning to populate those values in a collection table type and take the distinct values from it. How to populate record values in a collection table type.
Using Oracle 11g, below is the table, partitions, unique and non-unique local index:
CREATE TABLE DOCA( DOCA_ID NUMBER NOT NULL , DOCA_BKG_PAX_ID NUMBER NULL , ROW_PURGE_DATE DATE NULL ,)PARTITION BY RANGE(ROW_PURGE_DATE)INTERVAL(NUMTOYMINTERVAL(1, 'MONTH'))( PARTITION P2007 VALUES LESS THAN (TO_DATE('01/01/2008', 'dd/mm/yyyy')), PARTITION P200801 VALUES LESS THAN (TO_DATE('01/02/2008', 'dd/mm/yyyy')),) TABLESPACE T0; ALTER TABLE DOCA ENABLE ROW MOVEMENT;
CREATE UNIQUE INDEX XPKDOCA ON DOCA( DOCA_ID ASC, ROW_PURGE_DATE ASC)LOCALREVERSE TABLESPACE I0; ALTER TABLE DOCA ADD CONSTRAINT XPKDOCA PRIMARY KEY (DOCA_ID); CREATE INDEX XFKDOCA_DOCA_BKG_PAX_ID ON DOCA( DOCA_BKG_PAX_ID ASC)LOCALREVERSETABLESPACE I0;
I would like to know the difference between the performance of the unique and non-unique local indexes?.
The trace directory is full of trc files with the text below:
--------Dumping Sorted Master Trigger List -------- Trigger Owner : INPUT Trigger Name : CUS_TST --------Dumping Trigger Sublists --------
There is like a file generated every minute, and i cant stop it from happening.I have tried setting the trace_enabled parameter to FALSE but no success.
Forms 10g is insatalled recently on my machine. New form is developed,when we run the form it generates FMX file for the same but output is not dispalyed. The output window get closed automatically.
in eache record we are receiving information from differente city, we pretend to get an output where we have a row for each city (delimited by comma) that we have in column CITY
Input data
SELECT '1001001' as CLIENT_ID, 'LONDON, PARIS' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL UNION SELECT '1022201' as CLIENT_ID, 'MADRID, OSLO' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL UNION SELECT '1033001' as CLIENT_ID, 'PARIS' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL UNION SELECT '1033004' as CLIENT_ID, 'MADRID, OSLO, PARIS' as CITY, TO_DATE('20101105', 'YYYYMMDD') as DT_REG FROM DUAL
Output expected CLIENT_IDDT_REGCITY 100100105/11/2010 LONDON 100100105/11/2010 PARIS 102220105/11/2010 MADRID
How to find out how much undo will be generated by a dml / ddl statement in Oracle 9i? With Oracle 10g we can use the famous mystat.sql and mystat2.sql with argument as 'undo change vector size'.
However with Oracle 9i there is no statname as 'undo change vector size'
I am facing issue with my sequence number about sequence number generated..I want it to follow the sequence all the time, i.e. it should take next incremental number to last generated seauence, but it generates random one all the time, i.e
i have faced one problem with reports. i had created 4 reports. recently we are designed new application using oracle forms6i. we are created more than 10 forms and added to application they were working fine. but when i was added these reports they are not generated. but in server report are running. i mean the report genereted in server but not in local system.
RMAN-00571: =========================================================== RMAN-00569: =============== ERROR MESSAGE STACK FOLLOWS =============== RMAN-00571: =========================================================== RMAN-03002: failure of backup plus archivelog command at 09/06/2010 12:36:47 ORA-19715: invalid format F for generated name ORA-27302: failure occurred at: slgpn
I have found there is a wearied of email generated from my database. I have the data base server located in US (estern time) and the sysdate in the database is AUSTRALIA (AEST). But i am working from India (IST).I have one procedure, which will send email to some recipients once the job is done. It is using UTL_SMTP for sending the email from database.
Now problem is, the email i got from this procedure has a different timestamp which is NOT matching to any of the times:
Time in Mail : 2-Nov-2012 9.56 PM IST Time : 2-Nov-2012 10.56 AM Easter Time : 2-Nov-2012 01.30 AM AEST Time : 2-Nov-2012 4.30 PM
As we know that, MV is generating more redo logs during the FAST refresh. but i need more clarifications on that.
see the below examples:
exec dbms_mview.REFRESH ( LIST => 'mv_test', method=>'F');
PL/SQL procedure successfully completed.
select a.name, b.value from v$statname a, v$mystat b where a.statistic# = b.statistic# and a.name = 'redo size';
NAME VALUE ---------------------------------------------------------------- ---------- redo size 147144
see the redo size is 147144 bytes. Immediately, i refreshed in MV view. now there is no update or insert or delete stats happened in source tables. but i do see redo log generation is high for NO DATA refresh.
select a.name, b.value-147144 from v$statname a, v$mystat b where a.statistic# = b.statistic# and a.name = 'redo size';
NAME VALUE ---------------------------------------------------------------- ---------- redo size 42352
For no rows refresh, it takes 42352 bytes.. why oracle generated redo logs when there is no DML operations happened in source table.
My need is to view sql statement and its explain plan generated by client (Business Objects). How do I perform it? Since it's developer's server I have sufficient rights, I just don't know particular table name.
