Is there a function that allows the following?
select SOME_FUNCTION('N','E','S','W') from dual;
That returns
N
E
S
W
Currently I'm just doing the following
WITH direction AS
(SELECT 'N' dir FROM DUAL
UNION
SELECT 'E' FROM DUAL
UNION
SELECT 'S' FROM DUAL
UNION
SELECT 'W' FROM DUAL)
SELECT *
FROM direction;
there is a diff. problem for me.when i create table through inline view then it shows 2246 records but if i check these records only in select statement then it shows 124 records. i cant understand how table shows 2246 records even then atual records in inline view shows only 124 records.
following is a query
create table sam as
select * from
((
select distinct stck.item_code
from (
select item_code,bal
[code]...
Just want to confirm, that where Oracle stores data fetched from inline view.
I am asking, as I am making an inline view on a very large table and its getting failed with TEMP space error.
I am working on this assignment question for class:
Write a SELECT statement that returns a single value that represents the sum of the largest unpaid invoices for each vendor (just one for each vendor). Use an inline view that returns MAX(invoice_total) grouped by vendor_id, filtering for invoices with a balance due
What I have coded so far is below
SELECT i.vendor_id,
To_char(SUM(invoice_total), '$9,999,999.99') AS sum_invoice_total
FROM invoices i
join (SELECT vendor_id,
[code]...
I am getting some results which I have attached. I'm not sure if I'm capturing the "largest unpaid invoices for each vendor" part of the question. Yielding to the knowledge the group and trying to use the proper posting etiquette. I have attached my output screen as well.
the execution steps of inline view?importance&advantage of inline view?.Also reference link where i can get more information about inline view(i.e. basics to advanced),exercises and interview questions.
View 3 Replies View Relatedbelow query, first query is giving proper output i.e. 0 while second is giving wrong output i.e. 1.
Why this happen , what's wrong in using count in inline view ?
selecT count(*)
from (select *
from dual
where 1 = 2
union
select * from dual where 1 = 2);
[Code]....
I am working on Oracle 10g and Below is my query which is taking 30min. to execute. I am using two inline view and then make joins on these inline view because of i think it Degrade Performance.
Query :-
SELECT LEVEL_USER,
TRIAL_NO,
UNIT_NO,
COUNTRY_CODE,
PERSONNEL_NO,
[code].......
Note :- i have Attached the explain Plan for the same .Please let me know how can i improve performance of this Query.
which one is better in performance point of view and why between inline view and correlated query.
View 5 Replies View RelatedCan I update inline view like below?
update
(select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 55) a,
(select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 3) b
where a.survey_id = b.survey_id and substr(a.question_uid , 3) = substr(b.question_uid, 2))
set b.answer = a.answer;
My second question is: The following query is giving error. What can I do?
update answers ans set (ans.answer) = (with a as (select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 55),
b as (select * from surveys s join answers a on s.survey_id = a.survey_seq_id where month = 201212 and qa = 1 and main_group_id = 3)
select a.answer from a join b on a.survey_id = b.survey_id and substr(a.question_uid , 3) = substr(b.question_uid, 2) and b.answer_id = ans.answer_id) where ans.main_group_id = 3;
SQL Error: ORA-00904: "ANS"."ANSWER_ID":
Attached query is running fine if inline view B (Marked in Comments) returning value. If inline view B returns NULL then it fails to return result. I want if Inline view B is returning NULL then it should pass ZERO to main query.
View 2 Replies View RelatedBelow is the query where I need to filter the data using window function.
I don't want to use inline view for mt query because i need to use the same query in OWB which it wont support.
Select a.Physical_Id,
a.Booking_Begin_Date,
a.Booking_End_Date,
[Code]....
I Cannot use below query in OWB Which is Inline View
----------------------------------------------------------------------------
Select b.* From
(Select a.Physical_Id,
a.Booking_Begin_Date,
[Code].....
After searching a lot on net the differences between inline view and subquery that i came across are
1) you can use order by in inline view but not in subquery.
2) you can use alias for inline view but not subquery.
i have to fetch the same outcome using both the functionality respectively, then what is the technical impact/better.
I have a Employee table of the following format:
Emp_id | Emp_name | Salary
101 | James | 1000
102 | Julia | 200
I have to convert or transpose the table data as follows using a SQL statement/function -
Emp_id | 101 | 102
Emp_name | James | Julia
Salary | 1000 | 2000
How do I achieve this?
I have the situation like i want display the data from table which is storing in rows into a columns....
My table structure will be like this(Here i am taking only one part but have N no. of parts in my system)
Partno Purchase date Qty
111 02-DEC-2012 15
111 03-DEC-2012 25
111 04-DEC-2012 20
*** **** ****
111 31-DEC-2012 28
So i am expecting my query out put should be in column wise, that should make columns dynamically based on dates.
like example
__Partno 01-Dec-12 02-Dec-12 03-Dec-12 04-Dec-12 ---- ---- --- 31-Dec-12__
111 0 15 25 20 28
Here columns should be created based purchase dates dynamically with respect to quantity. Query out put will be like matrix format. So i feel that PIVOT & SYS_CONNECT_BY_PATH will not serve my requirement.
My system comparability is
oracle 10g database.
oracle 6i forms.
How To Convert Data from Reports 6i to oracle Tables.
View 2 Replies View Related There is a requirement to make a table data in a database (eg: HR database) available in another database (eg: EMP database), instead of accessing it using database link. In EMP database(where data needs to be cloned), data will only be queried and no write operation will be done. Data in remote database (eg: HR DATABASE) will be occassionally fully truncated and reinserted. The plan is to do a similar truncate and reinsert of data (from HR database) into EMP database monthly once using dbms scheduler job. So basically data in just one table needs to be cloned in another database.
Question: For this situation, is a regular table or Materialized view the right choice to clone the table in EMP database and why? The table in HR database (remote database) is not very big.
How can i load the data into a new table from view,when ever scheduler runs in the night, the data gets loaded in to a view and data coming from different tables and i should load that data every day and i dont want previous data again.The data should be loaded along with view .
View 6 Replies View RelatedI have a query on , how to view the sample data from a very table which is large in size ( more than 10 million ).
I just need to see some sample data from a large table ( to see what kind of data which is application related ).
My question is :
Select *
from Sample_table
where rownum < 10
is this a Good way to view the sample data ?
I have understanidng that the rownum will be assigined to the rows once all the rows are reteived.
So what is the best way to view ?..I am not sure of any condition to put in the intial time of querying.
I'm converting a SQL Server db to Oracle 10g. So far it's going pretty well. However, I've hit a significant performance snag trying to run queries against the converted view whose SQL is below. In SQL Server it runs pretty quickly, 10-15 secs. This query presently returns about 1.7 million records. code below, and assuming I've done nothing to optimize the database or the objects involved,
BS
------------------
CREATE VIEW DST_TMP_VIEW_ACCT_XACTN_CRN AS
SELECT CUSTACCNUM,
FUNDID,
[code]...
We have a requirement where we need to publish only the delta/changes made to an existing materialized view. This MV is fast refreshed over a db link. Since, MV will have all the data, we won't
1] Created MV Log
CREATE MATERIALIZED VIEW LOG ON SHRTS_FLNG_PRCSD
WITH PRIMARY KEY, SEQUENCE
INCLUDING NEW VALUES;
2] Create MV
CREATE MATERIALIZED VIEW MV_SHRTS_FLNG_PRCSD (ITRTN_NB,UNQ_ID,XCHNG_ORG_ID,FLNG_ST,MAX_PRCSD_ITRTN_NB,SBMTD_SCRTS_AM,SBMTD_PSTN_AM)
BUILD IMMEDIATE
REFRESH FAST ON DEMAND
WITH PRIMARY KEY
AS
[code]....
3) I can see deltas on MV logs.
UNQ_IDITRTN_NBSEQUENCE$$SNAPTIME$$DMLTYPE$$OLD_NEW$$CHANGE_VECTOR$$XID$$
{FDE35AAC-E749-4507-972F-F26F5982E046}121/1/4000UU28002.81485714140869E15
{FDE35AAC-E749-4507-972F-F26F5982E046}131/1/4000UN28002.81485714140869E15
{FDE35AAC-E749-4507-972F-F26F5982E046}181/1/4000DO00002.81491297598354E15
4) I have created a temp table to capture the diff between MV and newly inserted Deltas. I have added SEQ_NB column using Oracle sequence to capture the diff
CREATE TABLE MKT_CMPLC.TMP_SHRTS_FLNG_PRCSD
(
ITRTN_NB NUMBER(2) NOT NULL,
UNQ_ID CHAR(38 BYTE) NOT NULL,
XCHNG_ORG_ID NUMBER(8) NOT NULL,
FLNG_ST VARCHAR2(9 BYTE),
[code]....
5) I have refreshed the MV
exec dbms_mview.refresh('MV_SHRTS_FLNG_PRCSD');
6) In order to capture the new inserts, I am using following DML
INSERT INTO tmp_SHRTS_FLNG_PRCSD SELECT ITRTN_NB,
UNQ_ID,
XCHNG_ORG_ID,
FLNG_ST,
MAX_PRCSD_ITRTN_NB,
SBMTD_SCRTS_AM,
[code]....
We need only delta records. Is there any way to extract actual rows from MV logs.
base on performance it is better to retrieve data from view or mention the table names directly?
I have a select statement in from clause one of my table is view (which is having data collected from four tables) my question is whether performance of querry will be improved if i use directly all tables( four tables of a view) instead of a view
I have a materialized view "pro_mview",I am trying to refresh the MVIEW by using the following statement.
EXEC DBMS_MVIEW.REFRESH('pro_mview','C');
But I am getting the below error.
*
Error at line 1:
ORA-12008: error in materialized view refresh path
ORA-00942: table or view does not exist
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2256
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2462
ORA-06512: at "SYS.DBMS_SNAPSHOT", line 2431
ORA-06512: at line 1
I am able to fetch the data from that materialized view(pro_mview).
we're having a few tables which queries about 10.000 articles. As we don't show them all at once we are using pagination and use the rownum to show only a limited number of the results.
Now as these queries are pretty complex we have to optimize them and since we use pagination we have to call our query twice (first we make a count(*) and then we call the small resultset of a few rows). Ofcourse we are looking for a solution to call it only once and still use the pagination. We could load the whole resultset of 10.000 results and let java show only a few but that makes our line between the oracle and webserver pretty heavy. Is there a way to call the total number of results and give back only a small resultset just in one query?
When to use inline query and to use join.
View 3 Replies View RelatedI have a Table as below
Attribute_namePrimary Seconday
DNS 204.109.167.1204.109.167.2
DNS 204.109.167.2204.109.167.3
NAT 138.20.37.136138.20.37.137
NAT 138.20.20.116138.20.20.117
For a Specific requirement
I need the select data output like below
[b]DNS NAT Type[/b]
204.109.167.1138.20.37.136Primary
204.109.167.2138.20.20.116Primary
204.109.167.2138.20.37.137Secondary
204.109.167.3138.20.20.117Secondary
In one table I have data. Check the excel sheet i have attached.
One procedure to convert the data as mentioned in the excel sheet .
I want to convert row data into column and I mentioned here,
This is my table format, A B C------------------col1 1 101col2 2 102col3 3 103
The above query need to like this, COL1 COL2 COL3----------------------------------1 2 3101 102 103
I have the following data.
COURSE_SEQ_NO INSTRUCTOR_ID SE SEMESTER_CODE SEMESTER_YEAR QNO ANS ANS_COUNT
------------- ------------- -- ------------- ------------- ---------- --- ----------
74 10225 A 3 2011 1 E 3
74 10225 A 3 2011 1 VG 1
74 10225 A 3 2011 2 E 3
74 10225 A 3 2011 2 VG 1
[code]....
How can I convert it into matrix report like below
QNO E VG
1 3 1
2 3 1
3 3 1
. . .
. . .
. . .
17 3 1
how to convert rows data into column...
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