How do you limit the number of rows return from query?

How do you limit the number of rows return from query? Do all databases support this kind of feature?

i think the standard is limit
to get the top 30
select * from mytable LIMIT 30;returns the first 30 rows
also if you want a range
select * from mytable LIMIT 10,30;returns 30 rows starting from 10
this last one is useful for displaying ranges... something similar happens in these forums when viewing topics and messages

Similar Messages

How can I limit the number of rows returned by a select stat

How can I limit the number of rows returned by a select
statement. I have a query where I return the number of stores
that are located in a given area.. I only want to return the
first twenty-five stores. In some instances there may be over
200 stores in a given location.
I know is SQL 7 that I can set the pagesize to be 25....
Anything similiar in Oracle 8i?
null

Debbie (guest) wrote:
: Chad Nale (guest) wrote:
: : How can I limit the number of rows returned by a select
: : statement. I have a query where I return the number of
: stores
: : that are located in a given area.. I only want to return the
: : first twenty-five stores. In some instances there may be
: over
: : 200 stores in a given location.
: : I know is SQL 7 that I can set the pagesize to be 25....
: : Anything similiar in Oracle 8i?
: If you are in Sql*Plus, you could add the statement
: WHERE rownum <= 25
: Used together with an appropriate ORDER BY you
: could get the first 25 stores.
Watch out. ROWNUM is run before ORDER BY so this would only
order the 25 selected
null

TS3899 In ios7 how do you limit the number of emails downloaded from your ISP server? Previous version allowed you to limit it to 50, 100, etc.

In ios7 how do you limit the number of emails downloaded from the ISP server? Previous version allowed you limit the download to the last 50, 100, etc.

Hi,
Unfortunately, this is a feature that Apple have taken away.
The best way to let them know you want it back is via http://www.apple.com/feedback/
Regards

How do you change the number of rows returned by an advanced datagrid...Only displays 1000 rows....I

I am using coldfusion to query an oracle table....Query returns approximately 2000 rows, however the max rows the datagrid will display is 1000. Does anybody know how to change this...THANKS!!

Thanks so much for your answer that sounds like a good idea...
I found the answer to my initial problem...In my coldfusion I had set maxrows = 1000. So the datagrid was always returning 1000 records even when a lot more than that should have been returned...When I removed the maxrows parameter in the coldfusion code, my datagrid was now been populated with the correct number of rows...
thanks again for your help,
Ronnie Raigrodski (Aka -- FlexNerd)

How do I limit the number of rows retrieved at a time using RefCursor?

I have a PL/SQL package in use, that returns a REF CURSOR. This is currently being used in a Forms 6i application. Now I want to develop an ASP.NET web application that displays exactly the same information as my Forms 6i module. In fact those two applications will be used concurrently for a while.
I looked at the sample code provided on otn.oracle.com and decided to use the OracleDataAdapter.Fill()-method to fill a dataset and bind that dataset to a pageable GridView. Now I wonder, whether this method retrieves ALL records of the query at once and how I can limit the number of rows fetched? The Select statement retrieves up to 10000 rows at a time. Most of the time, a user is only interested in the first 20-30 rows. Forms 6i fetches more rows as the user scrolls down, how can I implement the same behavior in ODP.NET?
- Markus

Excuse me, but the reply does not quite answer my question. Maybe I did not explain my concerns clear enough:
I understand the use of the two properties (RowSize and FetchSize) to reduce the amount of round trips needed to transfer the data - not the number of rows fetched in total. This would still lead to a situation where all rows are transferred, when I am using the OracleDataAdapter.Fill()-Method. Is this correct or did I misunderstand the function of this method?
I quote the otherwise really helpful article you send me:
Of course, there is a cost if the fetch size is arbitrarily large. More client-side memory and processor cycles will be needed to store and manage a larger amount of data. The goal is to find a high-performing balance between the number of round trips and the amount of data retrieved per trip.
My RowSize is for sure a bit larger than the one in the given example. The query will probably be used by up to 100 users at a time, so I would like to limit the resource-costs not only on the network by the number of round trips, but also on the web-server which is storing all these records in it's memory per user-request.

How do you set the number of rows in a spreadsheet, so that even when you drag data in, in writes over those rows instead of adding a new row?

How do you set the number of rows you want in a spreadsheet, so that even when you drag data in, in writes over those rows instead of adding a new row?

After the discovery reported above, I filed this report :
Bug ID# 10073038
Summary:
When Numbers is used on a system with decimal comma a csv file may be good AND wrong
Steps to Reproduce:
With Numbers v2, you introduced an interesting enhancement.
In system using the comma as decimal separator, Numbers requires csv files using the semi-colon as values delimiter.
In fact it’s true if we OPEN the document dragging its icon on Numbers one or thru the open dialog.
This said.
(1) Drag and drop a csv built with the 'semi-colon' standard on a table or on a sheet
(2) Drag and drop a csv built with the 'comma' standard on a table or on a sheet
Expected Results:
Every normally constituted user assume that in
case (1) he will get a perfectly built table
case (2) he will get every cells of a row in a single cell
Actual Results:
In fact you forgot the drag and drop way of use and in
case (1) every values separated by semi-colon are inserted in a single cell
case (2) values separated by comma are correctly spread in a table
isn’t it ridiculous ?
Regression:
Except looking in QuickView to see which is exactly the structure of the file to decide the way we will insert it in a Numbers document, we may use an applescript fair enough to replace the semi-colons by TAB characters
or
to replace the commas by TABs and the decimal periods by commas
Notes:
While I am on this subject, I wish to make two proposals:
(1) It would be fine to format the date according to the ISO format year-mm-dd when you export a Numbers doc to csv.
Doing that, dates would be imported correctly in every countries.
At this time, on an English system, you export as mm/dd/year.
If the doc is open on a system using the format dd/mm/year, the results will be odd.
On a system using the format dd/mm/year, you export this way and so, if the doc is open on a system using the format mm/dd/year the results are odd too.
As every localized versions accept the ISO format (at least on entry), using it in the export scheme would give a correct behavior everywhere.
(2) It would be fine to add the format Tab Separated Values in the Export pane.
TSV + ISO date format would give documents opening flawlessly everywhere.
Yvan KOENIG (VALLAURIS, France) dimanche 4 septembre 2011 21:27:41
iMac 21”5, i7, 2.8 GHz, 4 Gbytes, 1 Tbytes, mac OS X 10.6.8 and 10.7.0
My iDisk is : <http://public.me.com/koenigyvan>
Please : Search for questions similar to your own before submitting them to the community

Need to know how to limit the number of rows returned on Oracle

MS SQL Server has a command called 'set row count'.
We are trying to find similar one on Oracle.
What we are trying to do is that instead of using rownum in the query statement, we would like to find way to limit the number of rows returned. I understand that we can use JDBC resultSet object, but that's not what we want.
I know Oracle has one called arraysize, but this would not limit the number of rows returned either.
Pease help.
Thanks

I understand that we can use JDBC resultSet object, but that's not what we want.I'm not sure which feature of ResultSet you use and which not.
But if this question has anything to do with JDBC (that's the forum where you put it), I'd recommend to use Statement.setMaxRows(). This will limit the count of rows which your statement will fetch into it's ResultSet.

How do you limit the number of emails that download in ios7?

How do you limit the number of emails that download in iOS7? In previous versions, I was able to limit (i.e. 50/100/ etc), the number that would download to my phone at any given time - other than new emails. Past/old emails would only be reloaded if I deleted newer ones or I requested more be loaded.

Now solved:
https://discussions.apple.com/thread/5325394?tstart=0
Guy in my thread fixed it for me. Very simple to do.

Can I limit the number of rows returned on a Select?

Can I limit the number of rows returned on a Select statement? I would be using JDBC in a Java program.

Use Java prepared statements with the equivalent of this SQL*plus script:
VARIABLE n number
EXEC :n := 3;
SELECT rownum FROM all_objects WHERE rownum <= :n;
    ROWNUM
         1
         2
         3
EXEC :n := 5;
SELECT rownum FROM all_objects WHERE rownum <= :n;
    ROWNUM
         1
         2
         3
         4
         5

How can I limit the number of rows in Oracle?

Hi All,
I am using very complex query where I join 6 table to fetch data from database.
I have requirement like fetching a first 10000 row and then fetching another records after 10000 and so on.
I just want to know how to fetch a limited number of rows using sql query. Moreover, I also want to know how to calculate the total number of row (alternative of count method because I don't want to query the database twice because its affect the performance).
Thanks in advance.
Regards,
Sunny

sunny@oimnewbie wrote:
Hi All,
I am using very complex query where I join 6 table to fetch data from database.
I have requirement like fetching a first 10000 row and then fetching another records after 10000 and so on.
I just want to know how to fetch a limited number of rows using sql query. Moreover, I also want to know how to calculate the total number of row (alternative of count method because I don't want to query the database twice because its affect the performance).
Thanks in advance.
Regards,
SunnyThis smells like a very fishy requirement based on a fundamental misunderstanding of how Oracle works. Could you explain why you want to arbitrarily limit the result set to 1000 rows? What will happen between that and getting the "next" 1000? What triggers getting the "next" 1000? and how do you define "next", since there is no ordering in a heap table.
I suspect we can make that requirement go away be presenting a better approach to the real issue.

Getting the number of rows returned from ResultSet

Hi,
Does anyone know a method to get the number of rows returned with a query using the Resultset class?
Thanks.

Hi 281080,
If your database and JDBC driver support it, in order to use the solution that da-alexj has suggested, you need to create a 'scrollable' "ResultSet" -- the javadoc for method "createStatement()" (in class "java.sql.Connection") has more details.
However, I have found with Oracle 8.1.7.4 database and Oracle (thin) JDBC driver, that part of their implementation of the "last()" method (in class "java.sql.ResultSet") is to actually iterate through the entire "ResultSet" in order to reach the last row. If your "ResultSet" is very large (I tested it with a 100,000 row "ResultSet"), this will take a long time.
Just wanted to make you aware of that.
Of-course, this may be irrelevant to you since I didn't see any mention in your post of what database and JDBC driver you are using.
Hope this has helped you, anyway.
Good Luck,
Avi.

How do you limit the number of rings before your answerphone kicks in?

People calling me have sometimes complained that if I am not available to take the call, they have to wait for many rings - and hence a long time - before the messaging system kicks in. And sometimes, callers give up, assuming I don't have voicemail. I know you can limit the number of rings on other phones, but I haven't founf out how to do it with my iPhone. I'm sure it's easy though!!

Your carrier sets this by time, not the number of "rings" since different ring tones take different times/ring. The typical setting is 30 seconds, sometimes up to 40 seconds. Contact your carrier to shorten it.

How do you limit the number of e-mails that stay on the I pad?

I am trying to limit the number of e-mails on my I-pad. I have 498 e-mails.
Help

I believe you need to manually delete them one at a time..
Are the emails from an IMAP account(s)

Wish to find out number of rows returned from query

hi,
is it possible to determine how many rows have been returned after a query has been executed?
thank you.

It doesn't seem like there is a method to do it for you, [...]There can't be such a method that's guaranteed to work for all databases. Many databases just hand you a cursor with the query results, and you have to walk the cursor to find the complete set. It's even possible for the DB to continue computing the query in the background and just give you a cursor to walk and consume what it has already generated.
So no, you have to walk the result set (effectively pulling everything over to the client) to count the number of rows..

How would you limit the number of Web App items a user can enter.

I am creating a web app where people can list objects/items. I want to offer plans that will enable users to enter up to a predefined number of entries and no more than what they paid to enter. They can then come back as often as they wish during their subscription period to update, create, and/or delete entries ( but again, never more than what thier subscription entitles them ).
Fore sake of illustration.
User Plan 1 entitles user to enter 1 web app item,
while
User Plan 2 entitle user to enter 3 web app items, and
User Plan 3 entitles user to enter 5 web app items.
These are annual plans.
Any ideas?

Hi,
As per your query you can not define to any user for schedule selected background jobs. I hope you are clear for this.
Anil

How do you limit the number of rows return from query?

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