IT Answers » MySQL query

SQL selecting multiple rows from same column based on different column values

edsonk45 — Sat, 15 Sep 2012 17:12:28 +0000

New Answer by TomLiotta

GROUP BY mysql

LewisT — Thu, 07 Jun 2012 08:10:15 +0000

Hi

I have started working with a mySQL databse.

I need a query that will either make use of “DISTINCT” or “GROUP BY” but that selectes the record that has the highest ‘VersionNumber’

Can anybody suggest how I would achieve this?

Thanks in advance.

Querying against Views vs Tables

Artaxerxes2 — Thu, 08 Sep 2011 15:38:42 +0000

I have a view that combine several tables, so that the view presents more information that each table taken individually. I want to write an “INSERT INTO … SELECT … FROM xxx” query. Should I use the View in that “FROM xxx” or should I expand what the view shows? What’s better in terms of optimization and/or business practice?
(I run on MySQL if it makes any difference)

Starting a session in MySQL

9867212949 — Mon, 13 Dec 2010 09:48:04 +0000

how to start a session in my sql?

MSQL Auditing

Dimon74 — Mon, 27 Sep 2010 08:25:18 +0000

Hello.

I’m dot.net developer, and i’m working a lot with MSQL. My current task is when some user executes select query on database, i should ”catch” the query data. What do i mean is if select query is “select * from UsersTbl where UserID = 5″, i have to get ’5′. Does somebody have any idea where to start???

Thanks a lot.

Dmitry

pagination using MySql

NetDeveloper — Tue, 13 Jul 2010 11:50:49 +0000

can anybody get any query for pagination using MySql.. any helps are welcome

Need help with documentation on a time tracker project

Novicebeginner — Tue, 13 Jul 2010 08:28:43 +0000

i m workin on a project – time tracker. its my 1st one. m a newbie n have no idea about documentation. can someone plz brief me how it wil b done? thanx

MySQL brain teaser

Michael Morisy — Tue, 18 May 2010 15:00:36 +0000

This has been driving me crazy. I’m trying to come up with an UPDATE query in MySQL that will remove the second blank space in a name and close the gap.

Example: O Brien, John E should become OBrien, John E

A simple REPLACE (name, ‘ ‘,’’) where SUBSTRING (name,2,1) like “ “ won’t work since it would remove all the spaces. I tried nesting the substring into the replace command, with less than stellar results. My last resort would be to parse the name into two new fields and then concat them, but that seems like way too many steps.

Has anyone come across an easier way to fix this? Thanks

SQL query

Srividya — Mon, 19 Apr 2010 15:58:33 +0000

New Answer by Chris Leonard

SQL join two counts on same table

Shantheman — Mon, 21 Sep 2009 18:17:57 +0000

I have two different SQL statements that each is a count on the same table, but a count of different columns. I’m trying to combine them into a single statement, but am having trouble doing so.

The two statements are:

SELECT photoIDWinner as photoID, count(primaryID) as countWin FROM `rankRaw` WHERE 1 group by `photoIDWinner`

and

 SELECT photoIDLoser as photoID, count(primaryID) as countLose FROM `rankRaw` WHERE 1 group by `photoIDLoser`

I want the result to be three columnss: photoID, countWin and countLose where photoIDWinner (from 1st) = photoIDLoser (from 2nd).
Anyone able to help?

Thanks!