Hierarchical Retrieval Concept
Oct 20, 2010Any links on hierarchical retrieval concepts?
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SQL & PL/SQL :: Data Retrieval
Jan 17, 2012i hv one table breco_data which is having two columns one is partycode and second is chequee no .and i just want filter the partycode and cheque no which are not availble in the breco_data table .and party cannot have same cheque no
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Apr 3, 2012is there possible to retrieve date with its time in oracle ,if we didnot provide time while insertion? like hiredate column of emp table can we get hiredate of each emp with its time of joining. i am using "11g Enterprise Edition Release 11.2.0.1.0"
View 3 Replies View RelatedForms :: Data Retrieval
Jan 16, 2013what could be the cause of the following scenario :
A form is running, data is entered and saved. After saving on form, checking in the backend, the data is present. But when using the same form again to retrieve data, no data is shown.. and also if tried to enter same data (previously entered for saving again) then error comes up that data is already in the database.
could this be related to any restrictions that might be placed on tables or something ??
Table Data Storage And Retrieval?
Apr 10, 2008Let me explain in detail. I have three tables
1. Emp Table: Columns-> EMPID and DeptID
2. Dept Table: Columns-> DeptName and DeptID
3. Team table : Columns -> Date, EmpID1, EmpID2, DeptNo.
There is a stored procedure which runs every day, and for "EVERY" deptID that exists in the dept table, selects two employee from emp table and puts them in the team table. Now assuming that there are several thousands of departments in the dept table, the amount of data entered in Team table is tremendous every day.
If I continue to run the stored proc for 1 month, the team table will have lots of rows in it.
The real problem is when I want to retrive data for a employee(empid1 or empid2) from Team table and view the related details like date, deptno and empid1 to empid2 from emp table.
How do we optimise the data retrieval and storage for the table Team. optimize the query and data retrieval time from Team table.
Forms :: Error ORA-06502 In BLOB Retrieval?
Oct 29, 2012I'm trying to develop a procedure which will read a BLOB field of a table and write an RTF document which will be used as template to another procedure but when the procedure fires up the select statemente, i got stuck with a ORA-06502 error.
This error, after reading the documentation, is caused by incompatibilities between fields (numeric or value error string) But i've seen this example everywhere in the internet and what is causing it.
The source code of my procedure follows:
PROCEDURE p_transfer_db_client(pcPath IN VARCHAR2,
pnSequence IN NUMBER) IS
v_src_blob BLOB;
v_file UTL_FILE.FILE_TYPE;
[code]...
Performance Tuning :: Which Index Will Be Better For Fast Retrieval Of Data
Nov 12, 2010I create a view on production server which takes almost 10 to 12 minutes when it shows data. this view contains 3 or 4 tables on which all primary and unique columns have indexes.which index will be better for fast retrieval of data .
View 5 Replies View RelatedExternal Table Concept
Jun 22, 2009Provide material for External table concept .which is like exactly as SQL * Loader concept.
What are the basic difference between External table concept and SQL * Loader concept.
Database Normalization Concept
Jun 24, 2013the database normalization concept. I have gone through couple of blogs and the websites but even i am not clear about the 1NF, 2NF, 3NF, Boycee Code etc, may be i am missing the basic points. give me some example notes / more clear precise information to understand the concepts clearly.
View 2 Replies View RelatedPerformance Tuning :: How To Increase Data Retrieval / Insertion Speed
Oct 24, 2013How To Increase Data Retrieval / Insertion Speed my data base has more than 0.5 million records Forms Some Time Respond Very Slow .
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Aug 9, 2012I am getting error while installing Oracle 11g on windows xp. Ora --12638: Credential Retrieval failed error. I understand that some people have got that error after the installation( Changing SQL.Net file).
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Nov 6, 2011How a DB client session establishes a connection and how it performs any transaction.
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May 17, 2013I am following Lynda Tutorial for Normalization. I have understand normalization.The core concept of primary key is that it uniquely identifies each record in the table, but here in the given below image the 'COURSE' field is repeating 'SQL101' value again and again but still the teacher in the video is calling it primary key and combination of date & Course column Composite key.how can a field which vales are repeating can be called as Primary Key?
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May 29, 2012what is ISP concept in Oracle10g???
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Dec 8, 2011Do Oracle SQL support Domain Concept?
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Jul 13, 2010Is there any way to find out the division between the time taken for query parsing, creating execution plan and actual data retrieval seperately? If I enable 'set timing on' I see the elapsed time which is the total time taken for all these 3. Some of my queries are taking long time when I run it first time and so want to know what is it taking long? is it the parsing or creating the execution plan, if so what can I optimize.
View 3 Replies View RelatedBackup & Recovery :: Log File Concept In Oracle
Dec 10, 2011what is the process of creating log file in database, Suppose if we have two user ,and both are logon through id & password,at that condition i want all log file from users who done at the database like any events.
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Sep 21, 2012What is Stripping concept in Automatic Storage Management?
How it spreads the database files across the disk group (Suppose i am having 4 disks in my disk group)?
Data Guard :: Fast-start Failover Concept?
Jun 17, 2010what is the configuration dba has do for enabling the "fast-start failover concept" in the event of loss of primary database without requiring any manual steps to invoke the failover.whether the configuration are to be made in parameter file if yes what are those ?
View 1 Replies View RelatedServer Administration :: Query On Redo And Undo Basic Concept
Nov 17, 2010understanding a redo/undo concept . Refer following data
create table t(n number);
insert into t values(10);
commit;
now I update as following
update t set n=20;
As per my understanding the before image i.e. n=10 is stored in undo (to be used for rollback, transaction recovery and even in instance recover but not in media recovery) and after image n=20 is stored in redo (to be used for various recovery purposes including media recovery in case of consistent backup).
So it is redo logs for rolling forward and undo for rolling back making transaction, db consistent . If my above understanding is true then what is meant by the term 'redo required for undo'?
Also, if there are 2 database db1 and db2 connected using database link where we are populating t1 table in db1 using t2 table in db2 using db link where redo and undo will be updated db1 or db2?
Export/Import/SQL Loader :: Script To Execute Impdp Using SILO Concept
Apr 4, 2013write a shell script to perform impdp using dbms_datapump using SILO concept .
View 9 Replies View RelatedForms :: Read External File Data At A Time Like Bulk Collect Concept?
Jul 23, 2012I have external file like (.csv or .txt) which contain million of record...i wnat to upload it in backend by using form 6i/10g.
by using package text_io.fopen i read it and by using for..loop conventional method insert record into table...but it will take time..
Is there any way like we use bulk collect and FORALL in backend for inserting data into table..
Is there any way to read external file at a time and insert it ...so minimize inserting time....process will become fast.
SQL & PL/SQL :: Hierarchical And With Clause
Jul 31, 2013>select level ,empno,ename,mgr
from emp
connect by prior empno=mgr
start with mgr is null;
Output:-
>
LEVEL EMPNO ENAME MGR
----- ---------- ---------- ----------
1 7839 KING
2 7566 JONES 7839
3 7788 SCOTT 7566
4 7876 ADAMS 7788
3 7902 FORD 7566
2 7698 BLAKE 7839
3 7499 ALLEN 7698
3 7521 WARD 7698
3 7654 MARTIN 7698
3 7844 TURNER 7698
3 7900 JAMES 7698
LEVEL EMPNO ENAME MGR
----- ---------- ---------- ----------
2 7782 CLARK 7839
3 7934 MILLER 7782
Note:- I got only this that this query is alternative of self join and it is giving manager name along with mgr id for each employee but when it gives output i couldn't able to understand how to identify who is manager of whom. Tell and explain with clause in oracle , i only know it is alternative of inline view but i want to know how does it work and how to use 'WITH' in oracle query if possible.
Get Different Level Using Hierarchical Query In Sql?
Jan 27, 2009I'm trying to get different level using hierarchical query in sql.my table is
item_id child_item_id
------------------------------
p21 p25
p21 p22
p22 p23
p22 p24
p25 p27
p25 p26
p27 p28
p27 p29
p30 p31
p30 p32
I want to display result with respective levels.
for example p21 ,p30 are coming under first level .
p22,p25 ,P31,P32are 2nd level.
p23,p24,p26,p27 are 3rd level
p28,p29 are FOURTH level item_id's.
Already I 'VE tried using CONNECT BY PRIOR clause.BUT STILL I COULDN'T GET THE RESULT.
SQL & PL/SQL :: Hierarchical Retrieving With Cycles
Sep 29, 2011first of all sample data;
create table test_circular_data(c1 varchar2(10),c2 varchar2(10));
insert into test_circular_data values ('c1','l2');
insert into test_circular_data values ('c1','l3');
insert into test_circular_data values ('c3','l3');
insert into test_circular_data values ('c4','l3');
commit;
There is a circular relation between columns c1 and c2, so what I'm trying to retrieve is something like that :
c1--> l2 --> l3 --> c3 --> c4
The steps to get that result is :
1.- c1 related to l2 : c1-->l2
2.- c1 related to l3 : c1-->l2-->l3
3.- l3 in the list and related to c3 : c1-->l2-->l3-->c3
4.- l3 in the list and related to c4 : c1-->l2-->l3-->c3-->c4
SQL & PL/SQL :: Hierarchical Query With Many-to-many Dependencies?
Apr 22, 2010I have a hierarchical data structure where a child can have many parents, and a parent can have many childs.See the attached file hierarchy_iliustration.jpg. This example has 4 hierarchy levels, in real problem there can be unlimited number of levels.I want to write a SQL query that lists all indirectly dependent child nodes for a given parent node.
Test structure for example attached:
CREATE TABLE TEST.NODE_T
(
ID NUMBER PRIMARY KEY,
TEXTAS VARCHAR2(254)
);
[code]....
Forms :: Hierarchical Tree In 6i
Dec 24, 2012Hierarchical Tree in oracle form 6i .i am trying to build tree in form 6i but it give error
SELECT 1,
level,
job
,
'',
ename
FROM emp
START WITH mgr IS NULL
CONNECT BY PRIOR empno = mgr
order by level
i want to show job wise employees ...
SQL & PL/SQL :: Update Hierarchical Relation
Nov 13, 2011I have a table which contains the connectivity details. It is telecom data. The table contains the relation between the point features(Ex: Terminal) and linear features(Ex: Cable)
Below is some sample data
drop table connectivity ;
create table connectivity
(
ftr_no number(5),
ftr_id number(5),
[Code]...
-- 2nd linear ftr
insert into connectivity values (30,10359,33, 9655, 2,NULL,NULL);
insert into connectivity values (30,10359,33, 9656, 1,NULL,NULL);
insert into connectivity values (30,10359,30, 10359,3,NULL,NULL);
[Code]...
In the connectivity table PARENT_FTR_NO and PARENT_FTR_ID needs to be updated based on these conditions.
1. Correspponding to each feature there are 3 entries in this table.
2. Each feature(Point orLinear) has 2 sides INcoming and OUTgoing
3. The possible values for the RELATION column are 1, 2 and 3 where
-> 1 indicates feature conncted at the OUTgoing end
->2 indicates features connected at the INcoming end
->3 indicates self connected
4. Always a linear feature is the parent of a point feature which are connected to the OUTgoing end of the linear feature (i.e where RELATION = 1)
There is another table which contains FEATURE_NO and FEATURE_TYPE.
create table ftr_catgry
(
ftr_no number(5),
ftr_type char(1)
);
[Code]...
FTR_NO F
---------- -
33 P
31 L
30 L
Where
'L' represents linear feature
'P' represents point feature
The relation should be updated as
Step 1. Start with a linear feature, for example FTR_NO = 31
SQL> select * from connectivity where ftr_no = 31 and ftr_id = 10354 and relation = 1;
FTR_NO FTR_ID CONNECTED_FTR_NO CONNECTED_FTR_ID RELATION PARENT_FTR_NO PARENT_FTR_ID
---------- ---------- ---------------- ---------------- ---------- ------------- -------------
31 10354 33 9651 1
The feature connected to the OUTend of the 10354 i 9651 with FTR_NO = 33 and it is a point feature so the parent for 9651 is 10354
Step 2.
SQL> select * from connectivity where ftr_no = 33 and ftr_id = 9651 and relation = 1;
FTR_NO FTR_ID CONNECTED_FTR_NO CONNECTED_FTR_ID RELATION PARENT_FTR_NO PARENT_FTR_ID
---------- ---------- ---------------- ---------------- ---------- ------------- -------------
33 9651 33 9652 1
9652 is connected to 9651 at the OUTend, since 9651 is point feature so the parent of 9651 which is a linear feature is also the parent for 9652
Likewise the all relations have to be updated
Expected result after update
SQL> select * from connectivity;
FTR_NO FTR_ID CONNECTED_FTR_NO CONNECTED_FTR_ID RELATION PARENT_FTR_NO PARENT_FTR_ID
---------- ---------- ---------------- ---------------- ---------- ------------- -------------
31 10354 33 9650 2
31 10354 33 9651 13110354
31 10354 33 10354 3
33 9651 31 10354 2
33 9651 33 9652 13110354
33 9651 33 9651 3
33 9652 33 9651 2
[Code]...
24 rows selected.
PL/SQL :: Hierarchical Data Maintenance
Aug 27, 2013I have a table (Parent - Child).There is a requirement to maintain this table, thats the hierarchy of the oraganisation.So, every quater they will be updating the table. They will be importing the data through an excel and in that excel there are 3 action items,
=> Insert, Update and Delete (logical delete).
CREATE TABLE PARENT_CHILD_TBL ( "ID" VARCHAR2(6 BYTE) NOT NULL ENABLE, "ID_DESC" VARCHAR2(200 BYTE), "ID_LEVEL" VARCHAR2(200 BYTE), "PARENT_ID" VARCHAR2(200 BYTE) )
For Update:What all validation can come for an updation of an hierarchical data in general.Like = how to derive the level value at database side when the id is updated to some other level.= How to maintain the relation. A -> B -> D ( A is the grand parent here).A -> Ceg: if B is updated as parent node of A, then we should throw error (cyclic data). Any more validations for hierarchical data
How To Count Siblings In A Hierarchical Query
Sep 24, 2012How to count siblings in a hierarchical query? I'm trying to get a listing of employees
SELECT LEVEL, last_name||', '||first_name AS Manager, count(employee_id)
FROM employees
START WITH manager_id IS NULL
CONNECT BY PRIOR employee_id = manager_id
GROUP BY level
This returns 4 levels. I'm wanting to add up the number of siblings under the level 2 instead of listing them all.