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  • Django: Sum on an date attribute grouped by month/year

    - by Sébastien Piquemal
    Hello, I'd like to put this query from SQL to Django: "select date_format(date, '%Y-%m') as month, sum(quantity) as hours from hourentries group by date_format(date, '%Y-%m') order by date;" The part that causes problem is to group by month when aggregating. I tried this (which seemed logical), but it didn't work : HourEntries.objects.order_by("date").values("date__month").aggregate(Sum("quantity"))

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  • Faster way to know the total 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 this: $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 the entire database. Is there a better way?

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  • Sql query builder c#

    - by pdiddy
    I'm building a windows mobile app. And using SqlCe. I'm looking for a good sql query builder. So instead of writing "SELECT COLUMNS FROM TABLE WHERE etc... Is there a good free library that can build this sort of query?

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  • Filter list as a parameter in a compiled query

    - by JK
    I have the following compiled query that I want to return a list of "groups" that don't have a "GroupID" that's contained in a filtered list: CompiledQuery.Compile(ConfigEntities contexty, List list) = from c in context.Groups where (!csList.Contains(c.GroupID)) select c).ToList() However I'm getting the following run-time error: The specified parameter 'categories' of type 'System.Collections.Generic.List`1[[System.Int32, mscorlib, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c261364e126]]' is not valid. Only scalar parameters (such as Int32, Decimal, and Guid) are supported. Any ideas?

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  • Mysql question: is there something like IN ALL query?

    - by jaycode
    For example this query: SELECT `variants`.* FROM `variants` INNER JOIN `variant_attributes` ON variant_attributes.variant_id = variants.id WHERE (variant_attributes.id IN ('2','5')) And variant has_many variant_attributes What I actually want to do is to find which variant has BOTH variant attributes with ID = 2 and 5. Is this possible with MySQL? Bonus Question, is there a quick way to do this with Ruby on Rails, perhaps with SearchLogic?

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  • Warning: expects resource but string given

    - by Damien
    I get: "Resource id #8 Warning: mysql_fetch_array() expects parameter 1 to be resource, string given" Heres the code: $sql="SELECT password FROM user WHERE userid=$userid"; echo $password=mysql_query($sql); while($row = mysql_fetch_array($password)) { $password = $row['password']; } Any ideas?

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  • JSF SelectOneMenuItem onselect attribute

    - by William
    I have created selectOneMenuItem(JSF).I placed my events on valueChangeListener / onchange like that <h:selectOneMenu id="ddl" value="#{Foo.attr}" onchange="submit()" valueChangeListener="#{Foo.renderFoo}"> When I select one vlaue from selectOneMenuItem then event fires.Now when I reselect that value ,then event doesn't fire (because this is the valueChangeListener event) so it doesn't fire.I want that event should fire on every selection even on again the same selection.I found onselect but unable to find that is it right and how can i use this onselect.Anyu help would be greatly appreciable

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  • Programmatically import CSV data to Access

    - by FrustratedWithFormsDesigner
    I have an Access database and the source of data comes from generated CSV files. I'd like to have an easy way for the users to simply select the data file and import it. Import should append the existing data to the data already in the data table. Is there a way in Access to create a file selector and import using saved CSV import settings that are already in the file?

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  • android low memory issue

    - by Faisal khan
    1.Start Andorid app in my app there are 10 screens i navigate b/w the screens after that i press home button my app goes on the background now i play with other applications which cause system to run GC press home button select my app come back to my app when i press back button it throws exception and crashes. any idea for quick fix ?

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  • Django display manytomany field in form when definition is on other model

    - by John
    Hi I have the definition for my manytomany relationship on one model but want to display the field on the form of my other model. How do I do this? for example: # classes class modelA(models.Model): name = models.CharField(max_length=300) manytomany = models.ManyToManyField(modelA) class modelB(models.Model): name = models.CharField(max_length=300) # forms class modelBForm(forms.ModelForm): class Meta: model = modelB If I then used modelBForm it would show a select box with the models from modelA rather than just name. Thanks

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  • MySQL sub query

    - by Juddling
    UPDATE members SET money=money+100 WHERE username IN (SELECT username FROM forum); Lets say I wanted to give each of my members 100 money for each post in my forum. This query works but if one member has posted more than once, they only get 100. Could someone correct this query please?

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  • How can I apply a theme/style to an Action android

    - by skooter
    In Android, how can I apply a style to an API action? I am using the RingtoneManager.RINGTON_PICKER action to let the user select an alarm, and would like to apply the standard theme that the other child-activities use. Does anyone know how I can apply a theme? The code I'm using to open the RINGTONE_PICKER is Intent intent = new Intent(RingtoneManager.ACTION_RINGTONE_PICKER); ((Activity)mContext).startActivityForResult(intent, BackendConstant.RINGTONE_CODE);

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  • Bizarre Escape Character Question

    - by William Calleja
    I have the following c# code embedded in a literal <% %> of a c# asp.net page string commandString = "SELECT tblData.Content " + "FROM tblData " + "WHERE (tblData.ref = N\'%"+myCurrentREF+"%\')"; This is breaking my code since it apparently cannot use the \' escape character. Why is it so? other escape characters like \" are working so why isn't \' working?

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  • LINQ expression until to break a string

    - by wonea
    Using LINQ I'm looking to break down the following path string[], however I'd like to break it up to the point of the Binn folder. Is there a WHERE UNTIL operator in LINQ? c:\ Program Files\ Microsoft SQL Server\ MSSQL10.SQLEXPRESS\ MSSQL\ Binn\ sqlservr.exe What I'd like todo var words = from word in thepath where UNTIL thepath == "Binn" select word;

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  • Android number input with plus and minus sign.

    - by alaak
    Hi, I am developing in android and I would like an input field for numbers, where the user can select the correct number using the plus sign at the top and the minus sign at the bottom of the input field. I know this works for date picker. Is there some property or something similar to make this available for any integer number input field? Thanks

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  • Mysql timestamp query

    - by Hulk
    In mysql a result of a query is say select timestamp from newbie; | 2010-03-12 14:50:46 | | 2010-03-12 14:50:46 | | 2010-03-12 14:50:51 | | 2010-03-12 14:50:52 | | 2010-03-12 14:50:54 | | 2010-03-12 14:51:04 | | 2010-03-12 14:51:07 | | 2010-03-12 14:51:08 | Is there a way to subquery the above and sum up the i.e, the final result should be the delta of each row in hh:mm:ss format

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