update

[SQL] Is it possible to update a fields value with the value of the field in the previous row?

I have a table from which I would like the update the value of a certain colum of fields. Basicly moving one value down and those under it should inherit the previous value of the one about them. I wonder if this action is possible using a single SQL query. My table: CREATE TABLE `menu` ( `slot_index` int(2) NOT NULL, `language_...

MySQL Insert on Duplicate Key.

I am building a rating system, and i want to insert a new row, if the name field does not already contain the name i want to insert, and if it does exist, i want to increase the count field by 1 For example, if i have a row the the name 'Tom' and i try to insert another row with the name 'Tom, then i want to +1 for the field count on th...

SubSonic .Update() method does not work with MySQL

Could someone tell me, why static Update() method doesn't work with MySQL ? Product.Update(5 ,"ProdName", 12.99); // Record is not updated, Why? SubSonic ver 2.2 However, the method below is updating OK. Product p = Product.FetchByID(5); p.Name = "ProdName"; p.Price = 12.99; p.Save(); Thank you. ...

Recovery after wrong MySQL update query?

I made a wrong update query in my table. I forgot to make an id field in the WHERE clause. So that updated all my rows. How to recover that? I didn't have a backup.... ...

please help me to create multi insert query.

i have got two table create table t1(cid int, isnews int) create table t2(nid int,cid int, isnews int) situations is like this: if t2 contain t2.cid = t1.cid then the t2.isnews = t1.news and if t2 not contain cid of t1 then new record should be inserted in t2 and that t1.cid, t1.isnews should be inserted in t2.. and complete ta...

Update Panel trigger Not firing

I have a simple update panel with a button that refreshes a radio button control, I recently noticed a few days now that some of the pages generated by ASP.Net containing my control the trigger does not firing to perform the post back. I have notice this behavior on my cache pages because if I load the same page not cached the update pan...

SQL update undo

Is there a way we can undo a SQL update query? ...

Efficient SQL query for two update and search queries

I have a query like this: SELECT TOP 1 ID, DATA, OTHERINF FROM MYTABLE WHERE DATE = @DATE and after reading the row data and using it I want to update that retrieved row and change one of it's columns (in another transaction). But as you see here i searched for that row twice. Is there anyway that I keep remember the row and do the u...

Getting info about running update query

On Sql Server 2008, I have a slow-running update query that has been working for 3 hours. Is there any way to get any statistics (say, how many rows have changed so far or something else) about this execution (of course, while executing) ? So that I can make a decision between canceling query and optimize it or let it finish. Or else, s...

How may I update my Java EE application with no downtime?

How may I automate (no downtime) deployment? And be able to turn any server off for maintenance. What tools should I use? I am using Tomcat but I am willing to move to other Java EE server best suited for the requirements presented. I would like to know ready to use configuration details. ...

php mysql update statment generation from form values

I am creating a very small database abstract layer, i want to send an array of variables that i obtained from a form, and generate an update sql statement, and eventually execute it. What do I put on the second to last line below? for example. $table name = "user"; $username = $_post['username']; $password = $_post['password']; $email ...

How to automatically update TableAdapter bound to TextBox

I have a WPF Window with several TextBoxes on it. I have an XSD dataset attached to a SQL server database, and the window is bound to a row from the tableadapter: public partial class PersonForm : Window { public PersonForm(int id) { InitializeComponent(); MyDatasetTableAdapters.personTableAdapter tableAdapter ...

How do web apps do automated updates without breaking config settings?

Let's say I have a mediawiki installation. I mess about with it, add little hacks to make the wikipedia logo change into tigger, and bounce up and down. Now it's time to update to the newest version, so I download it and run the update script. Let say it changed several variables, like $wglogo, the image path to the logo. How does the u...

update contact details on Android

I would like my code to update contact details (like name, phone number, email, organization details, etc) in the android contact book. I was successful in modifying a few (name, phone number and email to be specific) but not all. Whenever I try to update the organization details (Contacts.Organizations.COMPANY and Contacts.Organization...

How can I modify a CGRect stored as NSValue in an NSArray?

Hello, I am creating an NSArray with CGRects using the following line: [self setMyArray:[NSArray arrayWithObjects:[NSValue valueWithCGRect:CGRectMake(x,y,z,a)], [NSValue valueWithCGRect:CGRectMake(x,y,z,a)], nil]] I am then trying to update the CGrects in the Array every so often like this: for (NSValue *bound in myArray) { CGR...

What is the best way to run N independent column updates in PostgreSQL? What is the best way to do it in the SQL spec?

I'm looking for a more efficient way to run many columns updates on the same table like this: UPDATE TABLE table SET col = regexp_replace( col, 'foo', 'bar' ) WHERE regexp_match( col, 'foo' ); Such that foo, and bar, will be a combination of 40 different regex-replaces. I doubt even 25% of the dataset needs to be updated at all, but w...

SQL UPDATE order of evaluation

What is the order of evaluation in the following query: UPDATE tbl SET q = q + 1, p = q; That is, will "tbl"."p" be set to q or q + 1? Is order of evaluation here governed by SQL standard? Thanks. UPDATE After considering Migs' answer, I ran some tests on all DBs I could find. While I don't know what the standard says, implementa...

SQL clause to optimize UPDATE queries?

In my fictional database, I have several columns of data. In designing a PHP front-end to the script, it was necessary to allow the user to modify all attributes of a tuple if necessary. If the end-user only ends up modifying one attribute instead of all of them, the following statement: UPDATE foo SET name='bar' location='YYZ' dri...

Is an operation in SQL guaranteed to be atomic if performed in a single update statement?

I'm trying to remove the need to explicitly lock a table with the following code but from reports I've been getting it may be possible that the parameter and value in the row are suffering from a race condition. Declare @NextNumber Int; Update MyParameterTable Set NextNumber = NextNumber + 1, @NextNumber = NextNumber + ...

Why is this SQL query not working?

this script have to update things on every refresh but not working. lend me a hand $yp = mysql_query("select id from yyy where twitterid = '$tid'"); $qq = "update yyy set twitterid = '$tid', twitterkullanici = '$twk', tweetsayisi = '$tws', takipettigi = '$tkpettigi', takipeden = '$tkpeden', nerden = '$nerden', bio = '" . mysql_re...