SQL & PL/SQL :: Advance Sub-queries (Exists With Correlated Subquery)?
Jul 18, 2013concept of Exists, With and Correlated Subquery in Sql plus 10g from begining, what are they how do they work with step by step example from basic.
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SQL & PL/SQL :: Using Correlated Values In Nested Subquery
Sep 1, 2010select rtrim(xmlagg(xmlelement(e, table_name||',')).extract('//text()'),',')
from (
select distinct table_name from tr_products tr join all_instruments v
on tr.PROD_COA_ID = v.PROD_COA_ID
where tr.LEVEL_06_VALUE like t1.COLUMN_VALUE||'%'
or tr.LEVEL_05_VALUE like t1.COLUMN_VALUE||'%'
or tr.LEVEL_04_VALUE like t1.COLUMN_VALUE||'%'
or tr.LEVEL_03_VALUE like t1.COLUMN_VALUE||'%'
or tr.LEVEL_02_VALUE like t1.COLUMN_VALUE||'%'
or tr.LEVEL_01_VALUE like t1.COLUMN_VALUE||'%')
This is an excerpt of a code of a huge query, I didn't want to write it all here because there is no point in doing that since this is the part of the query that I'm actually having problem with, and I think you will be able to understand my question just by looking at this piece of code.
Anyway, this here is actually a subquery in a select-clause of a main query, and apparently it has a (nested) subquery of its own (as seen in the code). I want to reach some values ("COLUMN_VALUE") that are correlated to the parent query (t1 is alias of a table in the from-clause of the main query), and as you can see, I'm trying to reach it from this level 2 subquery. As I have recently found out, Oracle does not allow this, it only tollerates correlation down to level 1.
Here is a scheme of my query:
select something1,
(select something2 from
(select something3 from some_table2 t2
where t1.value = t2.value))
from some_table t1
can this be overridden somehow, is there a workaround for this limitation?
SQL & PL/SQL :: Building Correlated Subquery Select Statement By Aggregating Timestamps To Months?
Jun 11, 2010I have 3 tables, user_login_event, person and resource_viewed_event. What I want to do have a report for each month, users logged in our application and then show for each month, how many records were created in table person and how many resource views events were logged in resource_viewed_event.
Lets only worry about the timestamp fields in these tables now as I want to use them to join the tables together or at least build correlated subqueries along the months. I have tried several options, all not leading to a desired result:
Left outer join. Works but its incredibly slow:
SELECT
distinct to_char(ule.TIMESTAMP,'YYYY-MM') as "YYYY-MM",
count(distinct ule.id) as "User Logins",
count(distinct ule.user_id) as "Users logged on",
count(distinct p2.id) as "Existing Users",
count(distinct p1.id) as "New Users",
count(distinct r1.id) as "Resources created"
[code]....
Tried the same with left outer joins of temporary tables created through select statements:
select
distinct ule.month as "Month",
count(distinct p1.user_id) as "Users created",
count (ule.id) as "Logins",
count (distinct ule.user_id) as "Users logged in",
count(rv.id) as "Resource Views",
count(distinct rv.resource_id) as "Resources Viewed"
[code]....
Tried the same with left outer joins of temporary tables created through select statements:
select
distinct ule.month as "Month",
count(distinct p1.user_id) as "Users created",
count (ule.id) as "Logins",
count (distinct ule.user_id) as "Users logged in",
count(rv.id) as "Resource Views",
count(distinct rv.resource_id) as "Resources Viewed"
[code]....
another approach is to create my own temporary tables using select statements and create fixed Month values which I can use to directly link the sets together.
select
distinct ule.loginday as "Month",
count(distinct ule.id) as "Logins",
count(distinct ule.user_id) as "Users logged in",
count(distinct p1.user_id) as "Users created",
count(distinct p2.user_id) as "Existing users1"
[code]....
performance is OK with 2 tables but the example above takes forever to execute.
Tried an approach with union but this creates new rows for each table
SELECT DISTINCT p1.MONTH AS "Month",
COUNT(DISTINCT p1.user_id) AS "Users created",
NULL AS "Logins",
NULL AS "Users Logged in",
NULL AS "Resource views",
NULL AS "Resources viewed"
FROM (SELECT To_char(person.created_on_date, 'YYYY-MM') AS MONTH,
[code]....
SQL & PL/SQL :: Update Queries / Single Row Subquery Returns More Than One Row
Feb 12, 2013I have two update queries in the same Proc. One Seems to run just fine, the other I am getting this error:
ORA-01427: single-row subquery returns more than one row
The working Updates' structure is the same as the erroneous one. This works:
UPDATE P0525_STOREROOM_HOLDER H
SET H.STRATIFICATION_ID = (SELECT X.STRATIFICATION_ID
FROM EMISTRATIFICATION_XS X
WHERE H.TOA = X.TOA
AND H.STOREROOM = X.STOREROOM
AND H.NSN = X.NSN
AND X.ASSEMBLY = 'NO REQUIREMENT' );
This one gives me a single-row error:
UPDATE P0525_STOREROOM_HOLDER H
SET H.STRATIFICATION_ID = (SELECT X.STRATIFICATION_ID
FROM EMISTRATIFICATION_XS X
WHERE H.TOA = X.TOA
AND H.STOREROOM = X.STOREROOM
AND H.NSN = X.NSN
AND X.ASSEMBLY = 'ABOVE ALLOWANCE'
AND H.NSN_QUANTITY > 0);
I have run a check on the data and there doesn't appear to be any duplicate values in the second update... Both Updates are supposed to be updating record sets not a single row (i.e. the stratification_id where the criteria matches...
SQL & PL/SQL :: Email Notification Using Oracle Advance Queue
Nov 28, 2012I want to send an email notification using oracle aq for events like when a message goes to error queue. Similarly,Can I send an email notification when I create a queue or drop a queue?
How can I do this?
How To Enable Oracle Advance Compression For EXIST Partitioned Table
Feb 8, 2013I have to enable oracle advance compression for existing table which PARTITION BY RANGE then SUBPARTITION BY HASH.
ORacle version: 11.2.0.2.0
Converting MySQL Queries To Oracle Compatible Queries
Jan 23, 2007our system has always been running on mysql database and recently we have switched to oracle. As the current system is coded using mysql query syntax, when i run this program using oracle database, i got a error. The language that I'm using is JSP.
this is the error message:
The following query could not run on oracle. To convert these mysql queries to oracle compatible queries.
SELECT productID,productName FROM products order by productName;
select newsID,newsDate,newsHeadLine1 from news order by newsDate Desc limit 3
SELECT fuji_products.productID, productName_Display FROM products,products_availability where products_availability.productID=products.productID and (product_status='enabled' or product_status='all') AND category='12'
SELECT catID, catSub1 from category where catSub = '"+ prodCat +"' AND catSub1 is not null group by catSub1 order by catSub1
SQL & PL/SQL :: How To Write Correlated Sub Query
Sep 13, 2010I have employee, location, city tables, I have written following code to use joins
select ename from employee e, location l, city c
where e.c_locationid= l.locationid and l.cityid= c.cityid and c.cityname='XYZ';
The same can be written by using non- correlated sub query as follow..
select ename
from employee
where c_locationid in (select locationid from location where
cityid in (select cityid from city where cityname='XYZ'))
I need to implement the same concept using correlated sub query...
SQL & PL/SQL :: Correlated Query And Inline View
Apr 9, 2010which one is better in performance point of view and why between inline view and correlated query.
View 5 Replies View RelatedPL/SQL :: Correlated Update (Inline View)
Jan 21, 2013Can 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":
Refreshing Logically Correlated Snapshots Data?
Nov 29, 2010Simplifying the data structure that my problem concern, let's say there are two materialized views between whose data there's a one-to-many relationship [the relationship can be logical without a need of creating any foreing keys].
The data should be as actual as possible respecting the content of the master tables, let's say it shoul be refreshed every 5 minutes.
As far as I know, the jobs related to each snapshot, even if they have a START WITH and NEXT parameter set to the same value, work independently...So: what would be the best manner to synchronize the jobs so as to make sure the data of both snapshots are coherent?
Identifier Functions UID Correlated With Column Dba_users.user_id
Jul 6, 2012Is the identifier functions UID always correlated with the column dba_users.user_id ?
View 4 Replies View RelatedSQL & PL/SQL :: Not In Not Exists?
Aug 29, 2012 I have a question i wanted to know that " Is it possible to write the Following Query Using NOT EXISTS
SELECT * FROM DEPT WHERE DEPTNO NOT IN (SELECT UNIQUE DEPTNO FROM EMP);
And one more doubt is there, can we use join to get same result.
Datafile 11 - Not Exists
Aug 3, 2009i see in my alert.log this message:
Errors in file /oracle/BWP/saptrace/usertrace/bwp_ora_2728058.trc:
ORA-01114: IO error writing block to file 1030 (block # 602122)
ORA-27063: number of bytes read/written is incorrect
IBM AIX RISC System/6000 Error: 28: No space left on device
Additional information: -1
Additional information: 180224
But this file_id i don't have in my database, i am making these queries:
SQL> select FILE_ID from dba_temp_files order by FILE_ID;
FILE_ID
----------
1
2
3
4
5
6
7
8
9
[code]....
I don't have this file_id, why alert.log is showing me it? Of course, nobody has created this datafile and nobody has removed it too.
PL/SQL :: Check Given Value Exists Or Not
Jun 18, 2013i have a procedure like create or replace procedure studrec( a in sid%rowtype)asi sid%rowtype;beginselect sid into ifrom students; i need to check whether sid is exist in the variable i or not
View 5 Replies View RelatedHow To Check A Table If Exists
Oct 12, 2005I have a script like this:
------------------------------------------------------------
DROP TABLE CON_TEST CASCADE CONSTRAINTS ;
CREATE TABLE CON_TEST (
IDI NUMBER(10,0),
USERID VARCHAR2(10),
PWD VARCHAR2(10),
NOTE VARCHAR(100)
)
----------------------
But i think if table CON_TEST doen't exist, an error message will appear. I know that in SQL Server we can check if table exists or not. So, i wonder if we can do that in Oracle?
By the way, is there any way to run a file script that contents TABLES, STORED, ... on a developed PC connect to oracle db server? (in case, i'm developing on PC, using Net Service Name to conect to Oracle DB Server)
SQL & PL/SQL :: EXISTS Not Working In Oracle 10g
Mar 30, 2012following is a query which i find difficult to understand why EXISTS is failing. There are two scenarios where if i block LINE 30 and unblock line 31 of the code then one record is returned.
SELECT A.ENTITY_CODE,
A.VRNO,
A.VRDATE,
[Code]....
SQL & PL/SQL :: Checking Whether Record Exists
Jan 22, 2013Which is the best way to check whether a record exists.
DECLARE
l_count NUMBER;
BEGIN
SELECT COUNT(*) INTO l_count FROM emp WHERE empno=7839;
IF l_count=1 THEN
dbms_output.put_line('exists');
ELSE
dbms_output.put_line('not exists');
END IF;
END;
[Code]...
SQL & PL/SQL :: Function Returning Top Value If Not Exists Then Next One?
Nov 20, 2010how to write a function that returns top value if not exists then next top for combination of customer_id and hierarchy.For instance :
If I've got table
customer_id ,hierarchy, function_code
123 |1 | Z1
123 |2 |67
123 |3 |5B
678 |10 |S2
678 |11 |Z2
345 |2 |11
For the customer ID 123 I want to return Z1, for customer 678 I want to return S2 and for customer ID 345 I want 11
Problem is that I'm new to the concept of looping. I know how to write a function that accepts customer_id as a value write a cursor and then check IF hierarchy = 1 the return FUNCTION_CODE IF hierarchy - 2 THEN ...
but I need something more universal as some of the customers may have hierarchy function 1 and that would be the top one for him but others might have function of hierarchy 10 as top and checking all of the possibilities using if would be just stupid. So how to write something universal ? And of course if function did not find any customer_id then return null.
SQL & PL/SQL :: Using Where Not Exists Against A List Of Values?
Jul 13, 2012I have a list of values from a spreadsheet and want to know which values are NOT matched in columns of a table
here's the list (really 4000+ long)
1234,
2345,
3244,
and I want to find the values that are not in the table 'table_name' like this
....
where not exists (Select number_n from table_name
where number_n in ('1234', '2345', '3244', ...(the list above))
SQL & PL/SQL :: How To Check If Primary Key Exists
Jan 19, 2010I have a table called TRANS, and a primary key field tran_id. How would i check if there is a record matching tran_id 'DUP7927' ?
View 25 Replies View RelatedPL/SQL :: How To Check Particular Attributes Exists Or Not In XML Tag
Aug 14, 2012As per the earlier post,I am able to parse now.
i have also another concern as per below xml file.
My requirement is to identify perticular node ,whose having PriorValue attribute present in <pi:the Actual_Comp_Change> tag,those record should return.
<?xml version="1.0" encoding="UTF-8"?>
<pi:Extract_Employees xmlns:pi="urn:com.workday/picof">
<pi:Employee>
<pi:Employee_ID>1100</pi:Employee_ID>
[Code]....
OUTPUT:
EmployeeID_ Name JobTitle_ Grade ActualComp_Change_
1100 Surana Intern - Master¿s A 500000
1000 roy Intern - Master¿s B 216000
1000 roy Intern - Master¿s 00 266000
But my requirement is to display only those employeeID ,where Actual_Comp_Change tag having PriorValue attribute.
The required OutPUT should be :
EmployeeID_ Name JobTitle_ Grade ActualComp_Change_
1100 Surana Intern - Master¿s A 500000
is there any possibility to use ExistNode() function to the above quer or is there any alternative solution.
PL/SQL :: Select Exists On Time
Sep 17, 2013I have this sample:
the column data1 is datetime datatype with
t as ( select 'SMITH' nom,to_date('21/09/2013 07:30:00') data1
from dual union all select 'ALLEN',to_date('21/09/2013 07:40:00')
from dual union all -- select 'WARD',to_date('21/09/2013 07:50:00')
from dual union all
select 'JONES',to_date('21/09/2013 08:00:00')
from dual union all
[Code]..
How can I write a select to check that If I input 10 minutes to nom 'ALLEN' it's ok because the time 07:40 + 10 minutes = 07:50 the row not exists, (the next)but If input 20 it exists because the sum = 08:00 and row isn't free , indeed, there is 'JONES'?
SQL & PL/SQL :: Difference Between IN And EXISTS Operator
Jan 10, 2012what the difference between IN and EXISTS operator. Why should we use EXISTS operator?
View 1 Replies View RelatedInsert If Not Exists Else Update
Aug 10, 2007I have a single table with a TOTAL_TIME column which I want to increment by a certain amount every time I get a request from a specific user. If the row for that user does not exist, it should be created and the TOTAL_TIME column should be set to the value that just came in. Otherwise, if it does exist, it should be incremented by the value passed in.
How can I accomplish this in oracle? I don't want to just first do a select, then insert, because that can cause race conditions. I want something that'll do the check and insert/update in one statement (locked).
SQL & PL/SQL :: Rewrite Query Using NOT EXISTS Instead Of NOT IN?
Jul 12, 2012How to rewrite this query using NOT EXISTS instead of NOT IN
SELECT STUD_ID,
join_date,
stud_nme
FROM code_balance
[code]...
SQL & PL/SQL :: From Analytical To Subquery
Jun 10, 2010I was reading a tutorial for analytical function and i found something like this
sum(princial) keep(dense_rank first order by d_date) over partition by (userid, alias, sec_id, flow, p_date)
How to translate this into simple queries / subquery? i am aware that analytical function are faster but i would like to know how this can translate to using query without analytical function.
SQL Subquery And Aggregation
Nov 6, 2010I have a database containing the following after entering the following sql command
SELECT TITLES.TITLE_ID AS TITLE_ID, (PRICE * SALES),
TITLES.ROYALTY_RATE AS ROYALTLY_RATE,
AUTHOR_TITLES.ROYALTY_SHARE AS ROYALTY_SHARE,
AUTHORS.FNAME AS FNAME, AUTHORS.LNAME AS LNAME
FROM TITLES, AUTHOR_TITLES, AUTHORS
WHERE TITLES.TITLE_ID = AUTHOR_TITLES.TITLE_ID
AND AUTHORS.AU_ID = AUTHOR_TITLES.AU_ID
TIT (PRICE*SALES) ROYALTLY_RATE ROYALTY_SHARE FNAME LNAME
--- ------------- ------------- ------------- --------------- ---------------
T01 12446,34 ,05 1 Sarah Buchman
T02 190841,7 ,06 1 Sarah Buchman
T03 1025396,65 ,07 1 Christian Kells
T04 168882,99 ,08 ,6 Hallie Hull
T04 168882,99 ,08 ,4 Klee Hull
T05 1400008 ,09 1 Klee Hull
T06 225834 ,08 1 Wendy Heydemark
T07 35929790 ,11 ,5 Wendy Heydemark
T07 35929790 ,11 ,5 Klee Hull
T08 40950 ,04 1 Kellsey
T09 69750 ,05 1 Kellsey
TIT (PRICE*SALES) ROYALTLY_RATE ROYALTY_SHARE FNAME LNAME
--- ------------- ------------- ------------- --------------- ---------------
T10 1 Wendy Heydemark
T11 752042,77 ,07 ,3 Hallie Hull
T11 752042,77 ,07 ,3 Klee Hull
T11 752042,77 ,07 ,4 Kellsey
T12 1299012,99 ,09 1 Wendy Heydemark
T13 313905,33 ,06 1 Sarah Buchman
17 rows selected.
What I need to do is create a subquery and use Aggregation to list the author receiving the greatest royalties on revenue. so i used the command to get the royalties
SELECT TITLES.TITLE_ID AS TITLE_ID, (PRICE * SALES),
AUTHORS.FNAME AS FNAME, AUTHORS.LNAME AS LNAME,
((PRICE * SALES) * TITLES.ROYALTY_RATE * AUTHOR_TITLES.ROYALTY_SHARE) AS ROYALTIES
FROM TITLES, AUTHOR_TITLES, AUTHORS
WHERE TITLES.TITLE_ID = AUTHOR_TITLES.TITLE_ID
AND AUTHORS.AU_ID = AUTHOR_TITLES.AU_ID
TIT (PRICE*SALES) FNAME LNAME ROYALTIES
--- ------------- --------------- --------------- ----------
T01 12446,34 Sarah Buchman 622,317
T02 190841,7 Sarah Buchman 11450,502
T03 1025396,65 Christian Kells 71777,7655
T04 168882,99 Hallie Hull 8106,38352
T04 168882,99 Klee Hull 5404,25568
T05 1400008 Klee Hull 126000,72
T06 225834 Wendy Heydemark 18066,72
T07 35929790 Wendy Heydemark 1976138,45
T07 35929790 Klee Hull 1976138,45
T08 40950 Kellsey 1638
T09 69750 Kellsey 3487,5
TIT (PRICE*SALES) FNAME LNAME ROYALTIES
--- ------------- --------------- --------------- ----------
T10 Wendy Heydemark
T11 752042,77 Hallie Hull 15792,8982
T11 752042,77 Klee Hull 15792,8982
T11 752042,77 Kellsey 21057,1976
T12 1299012,99 Wendy Heydemark 116911,169
T13 313905,33 Sarah Buchman 18834,3198
17 rows selected.
So how do I add up the royalties values associated with each author and find the max? for example I add klee hulls's royalties from each book and get 2,123,336.32(doing it by hand on calculator) what is the sql to find the max royalties for each author? P.S the answer should be KLEE HULL with 2,123,336.32
Difference Between NOT IN - MINUS - NOT EXISTS / EXCEPT Operators?
Nov 19, 2011where difference lies between these operators or clause, & whether there is any "except" operator in oracle, i know other three are used bt dont think oracle uses "except" too..as far as i have seen "NOT IN", "MINUS" , "NOT EXISTS" are exactly similar?
View 4 Replies View RelatedORA-08103 - Object No Longer Exists?
Sep 10, 2011I am facing a problem in my database that whenever I load any kind of database objects in a particular tablespace then it gives:-
ORA-08103: object no longer exists
If I load in any other tablespace, everything works fine. I am getting error while export/import, create a table etc. How can I resolve it. I was wondering that may be it is facing problem while writing to a particular datafile.