SQL & PL/SQL :: Create A Table Through Inline View?
Oct 1, 2010
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]...
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May 10, 2013
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;
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Oct 6, 2012
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.
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Aug 19, 2013
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.
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Sep 23, 2011
below 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]....
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Apr 8, 2010
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.
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Apr 9, 2010
which one is better in performance point of view and why between inline view and correlated query.
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Jan 21, 2013
Can 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":
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Sep 6, 2012
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.
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May 16, 2013
Below 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].....
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Jul 7, 2012
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.
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Apr 25, 2012
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.
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Jun 25, 2012
How to create a view without base table . some example?
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May 16, 2012
how to create materialized view on partition table?
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Oct 2, 2010
I am trying to do the following-
CREATE DIRECTORY my_dir AS 'd:oraclefiles';
GRANT READ,WRITE ON my_dir TO PUBLIC;
The above throws up an error-
ORA-00942: Table or view does not exist
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Oct 8, 2010
is it possible to create primary key on view and use this view for creating foreign key .
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Dec 1, 2011
Can we create view in another view
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May 2, 2012
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).
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Apr 29, 2011
What is the difference between CREATE EXTERNAL TABLE Vs CREATE TABLE .?
Is CREATE EXTERNAL TABLE included in CREATE TABLE?
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Feb 25, 2011
I want to create view as follows.
Example:
Create or replace v_name
select job,sal, <funcation>
from emp;
Note:- Funcation returning 4 values.
Requirement:- I want to create view 6 columns.
how to create view.
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Oct 30, 2012
I am trying to create view ..Using totally Five tables....
The main driven table almost 10 GB Data
When i am creating a view..
End of communication channel Error raise...
At the same time I am running query ..Running Fine...
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Jan 17, 2011
I have created a package with some functions in it.I want to create a view with from 2 tables but also i wanto to use the functions from some fields of the view. (e.g. if the wview has 10 fields the 5 of them will be from the 2 tables and the other from package functions).
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Sep 11, 2012
I am about to pass 1Z0-051 and have been cramming. Ran across this scenario: Create or replace view. Correct answer: allows insert from view in multitable insert statement. Can I actually insert data from a view? My understanding is no data actually exists in a view. This has created a cavernous feeling of inadequacy.
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May 22, 2012
How do i split a string based on a space. And then create a view with three columns of that split string.
For example if i have a table with Full name as a column how do i split that string and create a view with firstname, middlename, lastname as column names with the split string as data.
If you need anything clarifying write back.
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Aug 6, 2010
How to create index on materialized view which is refreshed daily basis.
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Apr 27, 2012
I need to implement the Currency Conversion logic in SQL to create a view.
Sample data
Acount Table
Accno Amt Crncy_id
--------------------
101 1000 1
102 500 2
103 500 2
104 500 3
107 500 4
.
.
.
Currency Table
Crncy_id Crncy_nm
-------------------------
1 INR
2 USD
3 GBP
4 EUR
My local currency is INR, I need to write a query to convert the foreign currency to loacl currency INR.In my case i need to write aSQL for a view.It should not implement through PL/SQL
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Apr 21, 2010
I have a table as shown below,
SQL> select * from Main_Table;
AA
--------------------
SUB1
SUB2
Here the SUB1 and SUB2 are "tables" and are similar in their structure. The "Main_Table" will be update dynamically and the no of rows in this table will vary.
Now my question , i need to create a view which will have all the rows from these tables ,in the current case it is something like
create or replace view sample
as
select * from SUB1 union all
select * from SUB2
How can this be achived. I tried as shown below:
spool file_to_exe.sql
select 'select * from ' || AA ||' union all ' from Main_table;
spool off
i will end up in a union all "extra" , if i do like this.
how can achieve this ?..
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Aug 24, 2012
11.2.0.1...How do I create an index on a view or any workaround that my view won't get duplicates?
SQL> create unique index indx01 on db_backup_details_vw(id);
create unique index indx01 on db_backup_details_vw(id)
*
ERROR at line 1:
ORA-01702: a view is not appropriate here
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Jun 16, 2008
We are using Oracle 10g rel 2. The replication is setup on 1 server which is in City A, and the snapshot server is in City B.
City A .
Create materialized view log on table-a
with primary key
including new values.
City B database.
Create user test_rep identified by test
grant connect, resource, create any materialized view , table, view , procedure to test_rep.
Create materialized view city-A_db_MV
refresh fast
select * from cityA.Tablea@city-Adb
When i select from city-A_db_MV, it showed the complete table-A of city-A database.
Now if we make any changes to City-A table at the Master site, will it be propagated automatically to the MV site.
I guess we need to create jobs to push / or refresh fast .. isnt it. But exactly how to do it is a question.
Secondly if we make a replication group at Master site at city-A db, how do we refresh that Group and how to monitor whether it is refreshing on time or not? do we need to see the jobs every now and then.
but still a lot of questions unanswered, even though i had read the documents earlier.
1-The MView was created without identifying that after what interval it will be fast refreshed.
2- How to Manually refresh it. Does it support On Commit, I think it is not.
3- Where should be we make a group and then add the table to that group and refresh that group.
Should this group belongs to the Master Site or to MV site?
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Aug 3, 2010
i am trying to create materialized view but it give me insufficient privilege i give it all grant and i run it from sys it give the same.
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