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• Resort (reorder) table data

  - by Dave Jarvis

  What is the fastest way to reorder (resort) a table? In MySQL, you can do: CREATE TABLE table2 LIKE table1; INSERT INTO table2 SELECT * FROM table1 ORDER BY by name; DROP TABLE table1; RENAME TABLE table2 TO table1; What about PostgreSQL? Is there a faster way?

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• How to remove back button action while page is loading.

  - by user133611

  Hi All In my project i have a list when select on a item it will take to next controller using PushViewController. When i go there i will get data using libxml parser. But when i am clicking on the back button while loading it is showing exception. So i want to disable back button action till loading of data is completed how can i handle it. Thank You

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• How to shrink Windows 7 XP Mode VHD files?

  - by A_M

  I'm trying to shrink a Windows 7 XP Mode VHD file with VhdResizer with little success. When I select my VHD file, it says "VhdExpand only supports fixed and dynamic VHD files". My XP Mode VHDs are dynamic files. Does anyone have any idea why it is failing? Failing that, does anyone have a process that I can use to shrink my XP mode VHD files on Windows 7 (64 bit)?

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• Getting multiple aggregations in Single statement

  - by Harikrishnan R

  The table has data of city and its branchs/atms CITY TYPE NAME ---------------------------------- agra atm X agra branch X1 delhi atm X2 agra atm X3 agra atm X4 delhi branch X5 chennai branch X6 The result set expecting is CITY ATM BRANCH ------------------------------------ agra 3 1 delhi 1 1 chennai 0 1 Whether we can do this in one select statement.

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• A rule doesn't appear in the Style tab of Firebug

  - by user248959

  Hi, i have this page. login: [email protected] password: m You can see two selects in the filter for which i have this rule in gente.css: td.select label{ margin-left:12px; } The problem: the rule is applied but doesn't appear in the Style tab of Firebug. Any idea? Regards Javi

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• how to this query in right syntax or right way??

  - by MZT

  i write this query using t-sql and give me an error (Incorrect syntax near the keyword 'OR') How to write it in correct way ? SELECT SUM(Quantity) FROM Invoices WHERE Invoices.InvoiceDocStatusID = CASE @InventoryType WHEN 1 THEN ((2)OR(1)) ELSE 2 END

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• apply $expand to service operation

  - by Thurein

  Hi, I have a service operation in my dataservice, which returns a list of objects. Is it possible to apply $expand to the result. [WebGet] public IQueryable<contact> GetFilterByContactDetailCount(String city) { var result = from c in CurrentDataSource.Contacts join ca in CurrentDataSource.ContactAddresses on c.ContactID equals ca.ContactID join a in CurrentDataSource.Addresses on ca.AddressID equals a.AddressID where (String.IsNullOrEmpty(city) || a.City.Contains(city))) select c; return result.AsQueryable<Contact>(); } Thanks Thurein

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• How do I prevent SQL injection with ColdFusion

  - by Daniel A. White

  How do I prevent SQL injection when it comes to ColdFusion? I'm quite new to the language/framework. Here is my example query. <cfquery name="rsRecord" datasource="DataSource"> SELECT * FROM Table WHERE id = #url.id# </cfquery> I see passing in url.id as a risk.

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• Faster way to know the tolal number of rows in Mysql Database?

  - by Starx

  If I need to know the total number of rows in a table of database I do something like $query = "SELECT * FROM tablename WHERE link='1';"; $result = mysql_query($query); $rows = mysql_fetch_array($result); $count = count($rows); So you see the total number of data is recovered scanning through entire database Is there a better way

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• Easy C library to access MySQL

  - by Pyrite

  Any suggestions for a real simple C library to query a single MySQL table, nothing fancy here. Just doing a single select * from a table. Any help is appreciated.

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• WHERE vs HAVING

  - by baloo

  Why is it that you need to place columns you create yourself (for example "select 1 as number") after HAVING and not WHERE in MySQL? And are there any downsides instead of doing "WHERE 1" (writing the whole definition instead of a column name)

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• How to store MySQL query results in another Table?

  - by Taz

  How to store results from following query into another table. Considering there is an appropriate table already created. SELECT labels.label,shortabstracts.ShortAbstract,images.LinkToImage,types.Type FROM ner.images,ner.labels,ner.shortabstracts,ner.types WHERE labels.Resource=images.Resource AND labels.Resource=shortabstracts.Resource AND labels.Resource=types.Resource;

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• c#: xdocument and reading xsi:nil="true" gives "String was not recognized as a valid DateTime"

  - by DingoCC

  Happily reading xml with var q2 = from c in xmlDoc.Descendants("Ticket") select new { Responded_Date = (DateTime)c.Element("Responded_Date") } However when the tag is <Responded_Date xsi:nil="true" /> I get "String was not recognized as a valid DateTime". I don't wish to use the null coalescing operator but simply to take the null and insert into datatable

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• MySQL search a text from two columns

  - by I Like PHP

  i have a table (tbl_world) which look like this id | first_name | last_name | age | class | now i want to search the text which can be anywhere in first_name or in last_name i m using below mysql query "SELECT * FROM tbl_world WHERE REGEXP '".$word."' IN( first_name, last_name)"; where $word is user input (means if i search 'hell' then 'hello' as well as 'wellhell' also returned in result) above query display error, please suggest me optimize method for search in mysql. addition question: should i use LIKR or RLIKE?

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• can this simple SQL query be optimized?

  - by ibiza

  Hi, I have the following query : SELECT COUNT(*) FROM Address adr INNER JOIN Auditable a on adr.UniqueId = a.UniqueId on a big DB (1.3M adresses, 4M+ auditables) both UniqueId columns are clustered primary keys the query is taking quite long to complete...I feel dumb, but is there any way to optimize it? I want to count all the address entries that have an underlying auditable... thanks!

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• Create a Counter within a For-Loop?

  - by Todd Hartman

  I am a novice programmer and apologize upfront for the complicated question. I am trying to create a lexical decision task for experimental research, in which respondents must decide if a series of letters presented on the screen make a "word" or "not a word". Everything works reasonably well except for the bit where I want to randomly select a word (category A) or nonword (category B) for each of 80 trials from a separate input file (input.txt). The randomization works, but some elements from each list (category A or B) are skipped because I have used "round.catIndex = j;" where "j" is a loop for each successive trial. Because some trials randomly select from Category A and other from Category B, "j" does not move successively down the list for each category. Instead, elements from the Category A list may be selected from something like 1, 2, 5, 8, 9, 10, and so on (it varies each time because of the randomization). To make a long story short(!), how do I create a counter that will work within the for-loop for each trial, so that every word and nonword from Category A and B, respectively, will be used for the lexical decision task? Everything I have tried thus far does not work properly or breaks the javascript entirely. Below is my code snippet and the full code is available at http://50.17.194.59/LDT/trunk/LDT.js. Also, the full lexical decision task can be accessed at http://50.17.194.59/LDT/trunk/LDT.php. Thanks! function initRounds() { numlst = []; for (var k = 0; k<numrounds; k++) { if (k % 2 == 0) numlst[k] = 0; else numlst[k] = 1; } numlst.sort(function() {return 0.5 - Math.random()}) for (var j = 0; j<numrounds; j++) { var round = new LDTround(); if (numlst[j] == 0) { round.category = input.catA.datalabel; } else if (numlst[j] == 1) { round.category = input.catB.datalabel; } // pick a category & stimulus if (round.category == input.catA.datalabel) { round.itemtype = input.catA.itemtype; round.correct = 1; round.catIndex = j; } else if (round.category == input.catB.datalabel) { round.itemtype = input.catB.itemtype; round.correct = 2; round.catIndex = j; } roundArray[i].push(round); } return roundArray; }

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• Rails, using ActiveRecord to find all rows matching a parent row attribute

  - by randombits

  I have a class Foo which has_many Bars. Foo has an attribute, some_id. I want to Retrieve all Bar instances where the Foo has some_id = N. In SQL this translates into something like: select * from bar inner join foo on foo.id = bar.foo_id WHERE foo.some_id = N

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• MySQL JOIN with IF conditions.

  - by user333187

  Hi, I want to get some results via query simillar to: SELECT * FROM users LEFT JOIN IF (users.type = '1', 'private','company') AS details ON users.id = details.user_id WHERE users.id = 1 Any ideas?

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• how wordpress can un-slug a title

  - by Mac Taylor

  i still , don't understand , how wordpress can understand what is this url refer to : www.mysite.com/about-me/ they are using no identifier if they using slug functions so how they can retain story information or in other word , how they change back the slugged title to select from database

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• Nokogiri find text in paragraphs

  - by astropanic

  I want to replace the inner_text in all paragraphs in my XHTML document. I know I can get all text with Nokogiri like this doc.xpath("//text()") But I want only operate on text in paragraphs, how I can select all text in paragraphs without affecting eventually existent anchor texts in links ? #For example : <p>some text <a href="/">This should not be changed</a> another one</a>

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• What is this hacker trying to do?

  - by JW

  If you do a search for: http://www.google.co.uk/search?q=0x57414954464F522044454C4159202730303A30303A313527&hl=en&start=30&sa=N you will see a lot of examples of an attempted hack along the lines of: 1) declare @q varchar(8000) select @q = 0x57414954464F522044454C4159202730303A30303A313527 exec(@q) -- What is exactly is it trying to do? Which db is it trying to work on? Do you know of any advisories about this?

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• NHibernate - Saving simple parent-child relationship generates unnecessary selects with assigned id

  - by Alice

  Entities: public class Parent { virtual public long Id { get; set; } virtual public string Description { get; set; } virtual public ICollection<Child> Children { get; set; } } public class Child { virtual public long Id { get; set; } virtual public string Description { get; set; } virtual public Parent Parent { get; set; } } Mappings: public class ParentMap : ClassMap<Parent> { public ParentMap() { Id(x => x.Id).GeneratedBy.Assigned(); Map(x => x.Description); HasMany(x => x.Children) .AsSet() .Inverse() .Cascade.AllDeleteOrphan(); } } public class ChildMap : ClassMap<Child> { public ChildMap() { Id(x => x.Id).GeneratedBy.Assigned(); Map(x => x.Description); References(x => x.Parent) .Not.Nullable() .Cascade.All(); } } and using (var session = sessionFactory.OpenSession()) using (var transaction = session.BeginTransaction()) { var parent = new Parent { Id = 1 }; parent.Children = new HashSet<Child>(); var child1 = new Child { Id = 2, Parent = parent }; var child2 = new Child { Id = 3, Parent = parent }; parent.Children.Add(child1); parent.Children.Add(child2); session.Save(parent); transaction.Commit(); } this codes generates following sql NHibernate: SELECT child_.Id, child_.Description as Descript2_0_, child_.Parent_id as Parent3_0_ FROM [Child] child_ WHERE child_.Id=@p0;@p0 = 2 [Type: Int64 (0)] NHibernate: SELECT child_.Id, child_.Description as Descript2_0_, child_.Parent_id as Parent3_0_ FROM [Child] child_ WHERE child_.Id=@p0;@p0 = 3 [Type: Int64 (0)] NHibernate: INSERT INTO [Parent] (Description, Id) VALUES (@p0, @p1);@p0 = NULL[Type: String (4000)], @p1 = 1 [Type: Int64 (0)] NHibernate: INSERT INTO [Child] (Description, Parent_id, Id) VALUES (@p0, @p1, @p2);@p0 = NULL [Type: String (4000)], @p1 = 1 [Type: Int64 (0)], @p2 = 2 [Type:Int64 (0)] NHibernate: INSERT INTO [Child] (Description, Parent_id, Id) VALUES (@p0, @p1, @p2);@p0 = NULL [Type: String (4000)], @p1 = 1 [Type: Int64 (0)], @p2 = 3 [Type:Int64 (0)] Why are these two selects generated and how can I remove it?

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• Can I put an mysql index on a date field with when I use >= or <=?

  - by Ryan Detzel

  I have indexes for my table user,date, and date,user but when I issue queries like SELECT * FROM table WHERE date >= '2010-5-1' and user='test'; It doesn't use the date,user index it uses the user index. Is there any way to get mysql to use the date,user index for these queries?

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• How to get size of file uploaded to SQL-Server?

  - by MadBoy

  Is there a way to tell how to get a file size that is uploaded to database? SELECT [ID] ,[File] FROM [dbo].[Reports] I would like to be able to tell user the size of File which is VarBinary(max) field in MS SQL 2005/2008. How to do that? Maybe the only way to do is to create another column and when inserting file i should also insert it's size in additional column?

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• python : in which timezone is it a specific time right now?

  - by kevin

  i have users from all timezones, and i want to send out alerts at around 8AM in each users respective timezone. i need a python script that runs every hour [in a cron job] and i need to find out at which timezone it is 8AM right now, and i can use that info to select the users that have to receive the alerts. how do i go about doing this? there seems to be gmt+14 to gmt-12 that is 27 timezones, and there are only 24 hours in a day!

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