473,405 Members | 2,379 Online
Bytes | Software Development & Data Engineering Community
Post Job

Home Posts Topics Members FAQ

Join Bytes to post your question to a community of 473,405 software developers and data experts.

selecting random rows

Is there a way to get random rows besides ORDER BY random()? The problem with ORDER BY
random() is that is has to get all the rows from the table before the results are returned.
---------------------------(end of broadcast)---------------------------
TIP 9: the planner will ignore your desire to choose an index scan if your
joining column's datatypes do not match

Nov 11 '05 #1
0 970

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

5
by: Joe Six-Pack | last post by:
Hi, Im having problems in randomly selecting an element in an array that has not been selected before.. in other words, I have an array of answers to questions, then I want to select 5, with one...
12
by: Alexander Schmolck | last post by:
Quite a few algortihms prominently feature choosing/removing a single random element from a set at a time. On first sight I can't think of anything better to achieve this with `sets.Set` than...
12
by: Joseph Shraibman | last post by:
Is there a way to get random rows besides ORDER BY random()? The problem with ORDER BY random() is that is has to get all the rows from the table before the results are returned. ...
7
by: Jean-Francois.Doyon | last post by:
Hello, I'm trying to retrieve a limited number of random rows, and order them by a column, and am not having any luck with that last part: SELECT * FROM tablename ORDER BY random(), id LIMIT...
1
by: Jay | last post by:
Hi All, My users are complaining about the page refreshing when they are selecting multiple rows in a datagrid. Has anyone tried to manage this using javascript? I tried smartnavigation but that...
1
by: sneha123 | last post by:
There will be some 20 questions and for each question there will be 4 choices.what i want to do is to select multiple answers by clicking the checkbox. i m using asp.net,vb.net pls help me we...
1
by: Bob Loveshade | last post by:
I am looking for an example that shows how to select and highlight multiple rows in a DataGrid. My DataGrid is part of a Web User Control which is contained in an ASPX page. I haven't been...
2
by: Arnau Rebassa | last post by:
Hi everybody, I'm doing the following query: select * from messages order by random() limit 1; in the table messages I have more than 200 messages and a lot of times, the message retrieved...
8
by: Kari Lavikka | last post by:
Hi! I have to select a random row from a table where primary key isn't continuous (some rows have been deleted). Postgres just seems to do something strange with my method. -- -- Use the...
48
by: phillip.s.powell | last post by:
MySQL 3.23.58 - 4.0.17 (yep, several database server instances, don't ask) I have database Spring with table Students I have database Summer with table Students I am tasked to produce a...
0
by: Charles Arthur | last post by:
How do i turn on java script on a villaon, callus and itel keypad mobile phone
0
by: emmanuelkatto | last post by:
Hi All, I am Emmanuel katto from Uganda. I want to ask what challenges you've faced while migrating a website to cloud. Please let me know. Thanks! Emmanuel
0
BarryA
by: BarryA | last post by:
What are the essential steps and strategies outlined in the Data Structures and Algorithms (DSA) roadmap for aspiring data scientists? How can individuals effectively utilize this roadmap to progress...
1
by: nemocccc | last post by:
hello, everyone, I want to develop a software for my android phone for daily needs, any suggestions?
0
marktang
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However,...
0
jinu1996
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven...
0
by: Hystou | last post by:
Overview: Windows 11 and 10 have less user interface control over operating system update behaviour than previous versions of Windows. In Windows 11 and 10, there is no way to turn off the Windows...
0
agi2029
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing,...
0
isladogs
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.