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• Better way to do SELECT with GROUP BY

  - by Luca Romagnoli

  Hi i've wrote a query that works: SELECT `comments`.* FROM `comments` RIGHT JOIN (SELECT MAX( id ) AS id, core_id, topic_id FROM comments GROUP BY core_id, topic_id order by id desc) comm ON comm.id = comments.id LIMIT 10 I want know if it is possible (and how) to rewrite it to get better performance. Thanks

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• Helping Kohana 3 ORM to speed up a little

  - by Luke

  I noticed that Kohana 3 ORM runs a "SHOW FULL COLUMNS" for each of my models when I start using them: SHOW FULL COLUMNS FROM `mytable` This query might take a few clock cycles to execute (in the Kohana profiler it's actually the slowest of all queries ran in my current app). Is there a way to help Kohana 3 ORM to speed up by disabling this behaviour and explicitly define the columns in my models instead?

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• sanitation script in php for login credentials...

  - by Matt

  What I am looking for currently is a simple, basic, login credentials sanitation script. I understand that I make a function to do so and I have one...but all it does right now is strip tags... am I doomed to use replace? or is there a way i can just remove all special characters and spaces and limit it to only letters and numbers...then as for the password limit it to only letters and numbers exclimation points, periods, and other special chars that cannot affect my SQL query. Please help :/ Thanks, Matt

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• Update the rank in a MySQL Table

  - by sammichy

  I have the following table structure for a table Player Table Player { Long playerID; Long points; Long rank; } Assuming that the playerID and the points have valid values, can I update the rank for all the players based on the number of points in a single query? If two people have the same number of points, they should tie for the rank.

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• Data warehousing in sql server 2008

  - by 3bd

  Hi All: I am new to data warehousing and I am a little confused plz provide some simple steps to create a cube and fill it and make querey on it to know : I have a database with the original data and I have designed the star schema and made appropriate tables I have created an analysis service project in VS 2008 and then I have made the data source -data source view-dimensions - and the cube all that based on the star schema i have created previously now: what should I do to: fill this cube make query on this cube

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• How to order records by a computed column in Criteria API?

  - by bilalsalih

  How can I write the below HQL query using the Criteria API? select s.Name, sum(q.PointsObtained), sum(q.TotalPoints) from Student s join s.Quizzes order by sum(q.PointsObtained) / sum(q.TotalPoints) desc

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• Application closes on Nokia E71 when using urllib.urlopen

  - by sammr

  Hello, Im running the following code on my Nokia E71. But after the text input, the program closes abruptly. I have a GPRS connection on my phone,but i still seem to be having some problem with urllib.urlopen The code is as follows : import appuifw,urllib amountInDollars = appuifw.query(u"Enter amount in Dollars","text") data=urllib.urlopen("http://www.google.com").read() appuifw.note(u"Hey","info") Any way to fix this problem ? Thank You

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• How do I print all the queries in Magento?

  - by terrani

  Hi, is it possible to display all the query strings in Magento? I really like to see what queries are executed. Thanks

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• Hibernate Discriminator sort

  - by mrvreddy

  I am trying to sort the records when queried on discriminator column. I am doing a HQL/ Criteria query for retrieving all the records. Here is my class: abstract class A { ... } @DiscriminatorValue("B") class B extends A { } @DiscriminatorValue("C") class C extends A { } When I return the records, I want it sorted on the discriminator value.

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• SQL & Linq To SQL Help

  - by cre-johnny07

  I have a table which is some thing like below.. Date ID 2009-07-01 1 2009-07-01 2 2009-07-01 3 2009-08-01 4 2009-08-01 5 2009-08-01 6 2009-09-01 7 2009-09-01 8 2009-10-01 9 2009-10-01 10 2009-11-01 11 .... Now I need to write a query which will show a output like below. Date Start End 2009-07 1 3 2009-08 4 6 2009-09 7 8 ... How can I do this.. Any help would be highly appreciated Thanking In Advance Johnny

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• mysql multiple insert - what happens on error?

  - by aviv

  What happens in mysql multiple records insert during an error. I have a table: id | value 2 | 100 UNIQUE(id) Now i try to execute the query: INSERT INTO table(id, value) VALUES (1,10),(2,20),(3,30) I will get a duplicate-key error for the (2,20) BUT... Will the (1,10) get into the database? Will the (3,30) get into the database?

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• Get data on the basis of conditions in entity framework 3.5 with include

  - by Ashwani K

  Hello All: I am using entity framework 3.5 for my application. I want load data based on some condition e.g. var data = from e in context.Employee.Include("Employee.Projects") where e.IsActive select e; Using this, I will get all the Employees which are active with their project details. But I want to load only those projects which are active. So, how to load only active projects using the query? Thanks Ashwani

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• What was the most refreshingly honest non-technical comment you saw?

  - by DVK

  OK, so we all saw the lists of "funny" or "bad" comments. However, today, when maintaining an old stored procedure, I stumbled upon a comment which I couldn't classify other than "refreshingly brutally honest", left by a previous maintainer around a really freakish (both performance and readability-wise) page-long query: -- Feel free to optimize this if you can understand what it means So, in the first (and hopefully only) poll type question in my history of Stack Overflow, I'd like to hear some other "refreshingly brutally honest" code comments you encountered or written.

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• Wildcard for terms in phrase - Lucene

  - by Amaç Herdagdelen

  Google's query syntax allows to search phrases like "as * as a skyscraper" where the asterisk can match any term (or terms). Is there a way to achieve the same thing in Lucene? The proximity operator ~ could be of use but it is not what I exactly want.

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• How to concat a string in Python

  - by alex

  query = "SELECT * FROM mytable WHERE time=%s", (mytime) Then, I want to add a limit %s to it. How can I do that without messing up the %s in mytime? Edit: I want to concat query2, which has "LIMIT %s, %s"

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• Having a number in

  - by Wiika

  Can someone give me a query that will return as a result rows ID 1 & 3? ID Name Hidden 1 Mika 1,4,2 2 Loca 0 3 Nosta 4 4 Like 2 Something like this SELECT * FROM table WHERE Hidden HAVING(4)

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• sql inner join problem

  - by Luke

  The following SQL query isn't working. I think the error is on the first line. SELECT SUBSTRING(tbl_news.comment, 1, 250) as tbl_news.comment, tbl_news.id, tbl_news.date, tbl_news.subject, tbl_users.username FROM tbl_news INNER JOIN tbl_users ON tbl_news.creator = tbl_users.id ORDER BY date DESC

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• microsoft sql server management studio Incorrect syntax near '|'

  - by user3679099

  SELECT IPD.Task_grp "Task Group", TASK.STARTW "Starting Area", TASK.ENDW "Destination Area", IPD.Nxt_Work_Grp,IPD.Nxt_Work_Area "Drop Area", IPD.Prty "Priority", IPD.Stat_Code "Status" FROM int_path_defn IPD, (SELECT start_curr_work_grp || start_curr_work_area StartW, start_dest_work_grp ||start_dest_work_area EndW FROM task_hdr WHERE task_id='332800') TASK WHERE IPD.CURR_WORK_GRP || IPD.Curr_Work_Area=TASK.StartW AND IPD.Dest_Work_Grp || IPD.Dest_Work_Area=TASK.ENDW I am getting Msg 102, Level 15, State 1, Line 5 Incorrect syntax near '|'. Please help what could be the wrong. same query executed successfully in oracle sql developer

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• Can NHibernate Criteria Pull From Cache

  - by Aaron Smith

  I'm loading a lot of data into the database with NHibernate. As I'm inserting, I want to check for duplicates. I call saveorupdate in each loop without flushing the session. Is there a way to query this session for duplicates without flushing?

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• How to see the version of the TAP file

  - by benjamin button

  this is a telecom based query. we receive TAP files from the clearing house. i want see on unix which version of TAP does it belong. how can i do it.Isthere any tool to find the TAP file version?

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• SQL Server connection identification

  - by andrew007

  Hi, I have several developers which connect to production and test servers where we have DBs with similar names and structures. In SSMS there are info related to the connection, but sometimes are not properly displayed and/or hidden. I know that it is possible to customize the status bar of each connection in SSMS, but how do you ensure that your developer is connecting to the right server before he runs a query? Is there any way to handle this? THANKS!

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• mysql select column from view problem

  - by haim evgi

  i create a view table like : CREATE VIEW ViewManager AS SELECT us.UserId AS 'Account Manager', ......... after that, when i run a query to select data from this view like : SELECT 'Account Manager' , .. from ViewManager then the data i get in this column is the text 'Account Manager' and not the value of the this columns. Is there a way to solve this ? Of course I can change the field name , but i want to know if there is another solution, thanks.

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• SQL server 2005 :Updating one record from 2 identical records

  - by Shyju

  I have 2 records in a table in SQL Server 2005 db which has exactly same data. I want to update one record.Is there anyway to do it?Unfortunately this table does not have an identity column and i cant use a direct update query because both will be updated since data is same.Is there anyway using rowid or something in SQL server 2005 ?

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• Maximum of averages

  - by Qtacz

  I'm supposed to get every departments average wage and only show the department with the highest average wage. I figured out this query, but it doesn't work. Anyone got some ideas? SELECT department, max(avg(wage)) FROM employees GROUP BY department; I get this error: ERROR at line 1: ORA-00937: not a single-group group function

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• Dynamic Multiple Choice (Like a Wizard) - How would you design it? (e.g. Schema, AI model, etc.)

  - by henry74

  This question can probably be broken up into multiple questions, but here goes... In essence, I'd like to allow users to type in what they would like to do and provide a wizard-like interface to ask for information which is missing to complete a requested query. For example, let's say a user types: "What is the weather like in Springfield?" We recognize the user is interested in weather, but it could be Springfield, Il or Springfield in another state. A follow-up question would be: What Springfield did you want weather for? 1 - Springfield, Il 2 - Springfield, Wi You can probably think of a million examples where a request is missing key data or its ambiguous. Make the assumption the gist of what the user wants can be understood, but there are missing pieces of data required to complete the request. Perhaps you can take it as far back as asking what the user wants to do and "leading" them to a query. This is not AI in the sense of taking any input and truly understanding it. I'm not referring to having some way to hold a conversation with a user. It's about inferring what a user wants, checking to see if there is an applicable service to be provided, identifying the inputs needed and overlaying that on top of what's missing from the request, then asking the user for the remaining information. That's it! :-) How would you want to store the information about services? How would you go about determining what was missing from the input data? My thoughts: Use regex expressions to identify clear pieces of information. These will be matched to the parameters of a service. Figure out which parameters do not have matching data and look up the associated question for those parameters. Ask those questions and capture answers. Re-run the service passing in the newly captured data. These would be more free-form questions. For multiple choice, identify the ambiguity and search for potential matches ranked in order of likelihood (add in user history/preferences to help decide). Provide the top 3 as choices. Thoughts appreciated. Cheers, Henry

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