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  • SQL - First row inserted every day for the past X days

    - by okie.floyd
    A tough SQL question (I'm using postgres by the way). I need the first row inserted every day for the past X days. one of my columns is a timestamp, which i hold the time inserted, and another column is the row id. If it's not possible to get the first row inserted every day, i at least need a unique one; a single row for every day for the past x days. Any suggestions? Thanks okie

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  • combine 2 files with AWK based last colums

    - by mohammad reshad
    i have two files file1 ------------------------------- 1 a t p b 2 b c f a 3 d y u b 2 b c f a 2 u g t c 2 b j h c file2 -------------------------------- 1 a b 2 p c 3 n a 4 4 a i want combine these 2 files based last columns (column 5 of file1 and column 3 of file2) using awk result ---------------------------------------------- 1 a t p 1 a b 2 b c f 3 n a 2 b c f 4 4 a 3 d y u 1 a b 2 b c f 3 n a 2 b c f 4 4 a 2 u g t 2 p c 2 b j h 2 p c

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  • What database table structure should I use for versions, codebases, deployables?

    - by Zac Thompson
    I'm having doubts about my table structure, and I wonder if there is a better approach. I've got a little database for version control repositories (e.g. SVN), the packages (e.g. Linux RPMs) built therefrom, and the versions (e.g. 1.2.3-4) thereof. A given repository might produce no packages, or several, but if there are more than one for a given repository then a particular version for that repository will indicate a single "tag" of the codebase. A particular version "string" might be used to tag a version of the source code in more than one repository, but there may be no relationship between "1.0" for two different repos. So if packages P and Q both come from repo R, then P 1.0 and Q 1.0 are both built from the 1.0 tag of repo R. But if package X comes from repo Y, then X 1.0 has no relationship to P 1.0. In my (simplified) model, I have the following tables (the x_id columns are auto-incrementing surrogate keys; you can pretend I'm using a different primary key if you wish, it's not really important): repository - repository_id - repository_name (unique) ... version - version_id - version_string (unique for a particular repository) - repository_id ... package - package_id - package_name (unique) - repository_id ... This makes it easy for me to see, for example, what are valid versions of a given package: I can join with the version table using the repository_id. However, suppose I would like to add some information to this database, e.g., to indicate which package versions have been approved for release. I certainly need a new table: package_version - version_id - package_id - package_version_released ... Again, the nature of the keys that I use are not really important to my problem, and you can imagine that the data column is "promotion_level" or something if that helps. My doubts arise when I realize that there's really a very close relationship between the version_id and the package_id in my new table ... they must share the same repository_id. Only a small subset of package/version combinations are valid. So I should have some kind of constraint on those columns, enforcing that ... ... I don't know, it just feels off, somehow. Like I'm including somehow more information than I really need? I don't know how to explain my hesitance here. I can't figure out which (if any) normal form I'm violating, but I also can't find an example of a schema with this sort of structure ... not being a DBA by profession I'm not sure where to look. So I'm asking: am I just being overly sensitive?

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  • NET USE command And Network Provider interface.

    - by Benjamin
    When we command "net use" on command prompt, the result has four columns. Status Local Remote Network OK Z: \\10.x.x.x\Public Microsoft Windows Network X: \\10.y.y.y\Public My Network Redirector The Microsoft Windows Network(SMB)'s Status has OK value, but we don't. It's just empty. We implemented NPEnumResource function in our Network Provider dll. But I don't know how can I set the value(OK). How can I do that? Thanks

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  • How can I make a list in a Repeater Section?

    - by JPJedi
    I need to create a repeater section that will show 4 columns - First Name, Last Name, a link based off of stored column data that says. All the data plus some extra not being used is in a players profile. How do I link the data on the code-behind to the repeater control with the databinders? I am using visual studio 2008, VB.NET for the code behind.

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  • Extending Zend_Auth_Adapter_DbTable for Extra Checks

    - by Urda
    My google fu is weak today, but I cannot find a good article to do so. I would like to extend the Zend Adapter to check n extra columns on my database table. What is the best way to fully extend the adapter, so I can use it in the future without needing to dig through documentation again.

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  • asp:Button is not calling server-side function

    - by Richard Neil Ilagan
    Hi guys, I know that there has been much discussion here about this topic, but none of the threads I got across helped me solve this problem. I'm hoping that mine is somewhat unique, and may actually merit a different solution. I'm instantiating an asp:Button inside a data-bound asp:GridView through template fields. Some of the buttons are supposed to call a server-side function, but for some weird reason, it doesn't. All the buttons do when you click them is fire a postback to the current page, doing nothing, effectively just reloading the page. Below is a fragment of the code: <asp:GridView ID="gv" runat="server" AutoGenerateColumns="false" CssClass="l2 submissions" ShowHeader="false"> <Columns> <asp:TemplateField> <ItemTemplate><asp:Panel ID="swatchpanel" CssClass='<%# Bind("status") %>' runat="server"></asp:Panel></ItemTemplate> <ItemStyle Width="50px" CssClass="sw" /> </asp:TemplateField> <asp:BoundField DataField="description" ReadOnly="true"> </asp:BoundField> <asp:BoundField DataField="owner" ReadOnly="true"> <ItemStyle Font-Italic="true" /> </asp:BoundField> <asp:BoundField DataField="last-modified" ReadOnly="true"> <ItemStyle Width="100px" /> </asp:BoundField> <asp:TemplateField> <ItemTemplate> <asp:Button ID="viewBtn" cssclass='<%# Bind("sid") %>' runat="server" Text="View" OnClick="viewBtnClick" /> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> The viewBtn above should call the viewBtnClick() function on server-side. I do have that function defined, along with a proper signature (object,EventArgs). One thing that may be of note is that this code is actually inside an ASCX, which is loaded in another ASCX, finally loaded into an ASPX. Any help or insight into the matter will be SO appreciated. Thanks! (oh, and please don't mind my trashy HTML/CSS semantics - this is still in a very,very early stage :p)

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  • True or False: Good design calls for every table to have a primary key, if nothing else, a running i

    - by Velika
    Consider a grocery store scenario (I'm making this up) where you have FACT records that represent a sale transaction, where the columns of the Fact table include SaleItemFact Table ------------------ CustomerID ProductID Price DistributorID DateOfSale Etc Etc Etc Even if there are duplicates in the table when you consider ALL the keys, I would contend that a surrogate running numeric key (i.e. identity column) should be made up, e.g., TransactionNumber of type Integer. I can see someone arguing that a Fact table might not have a unique key (though I'd invent one and waste the 4 bytes, but how about a dimension table?

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  • Keeping DB Table sorted using multi-field formula (Microsoft SQL Server)

    - by user298167
    I have a JOB table, with two interesting columns: Creation Date Importance (high - 3, medium 2, low - 1). A JOB record's priority calculated like this: Priority = Importance * (time passed since creation) The problem is, every time I would like to pick 200 jobs with highest priority, and I don't want to resort the table. Is there a way to keep rows sorted? I was also thinking about having three tables one for High, Medium and Low and then sort those by Creation Date.

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  • SQLite If Column Exists

    - by Nathan
    I was wondering if there is a nice IF NOT EXISTS for checking columns and indexes in SQLite, or do I need to bring back the entire database schema and validate against that?

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  • Filtering a dataframe in row names from a column value in R

    - by user1755155
    Basically I have dataframe with two columns (target_id and fpkm). I want to keep only those row names in first column that are not duplicated. For example in the below dataframe you can see there are two row names with the same name (almost) comp267138_c0_seq1 comp267138_c0_seq2 and from both and I want to keep only one comp267138_c0_seq2 based of high value in column 2. target_id fpkm comp247393_c0_seq1 3.197885 comp257058_c0_seq4 1.624577 comp242590_c0_seq1 1.750319 comp77911_c0_seq1 1.293059 comp241426_c0_seq1 1.626589 comp288413_c0_seq1 14.828853 comp294436_c0_seq1 11.555596 comp63603_c0_seq1 1.982386 comp267138_c0_seq1 8.594494 comp267138_c0_seq2 11.134958 comp321623_c0_seq1 6.934149

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  • Command line CSV viewer?

    - by Benjamin Oakes
    Anyone know of a command-line CSV viewer for Linux/OS X? I'm thinking of something like less but that spaces out the columns in a more readable way. (I'd be fine with opening it with OpenOffice Calc or Excel, but that's way too overpowered for just looking at the data like I need to.) Having horizontal and vertical scrolling would be great.

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  • How can you replicate each row of an R data.frame and specify the number of replications for each ro

    - by wkmor1
    df <- data.frame(var1=c('a', 'b', 'c'), var2=c('d', 'e', 'f'), freq=1:3) What is the simplest way to expand the first two columns of the data.frame above, so that each row appears the number of times specified in the column 'freq'? In other words, go from this: >df var1 var2 freq 1 a d 1 2 b e 2 3 c f 3 To this: >df.expanded var1 var2 1 a d 2 b e 3 b e 4 c f 5 c f 6 c f

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  • qx.ui.table.Table hangs my browser...

    - by W55tKQbuRu28Q4xv
    Hi all, I have a strange bug. I create a qx.ui.table.Table and if not all specified columns fit into window (horizontal scroll appear) my browsers (firefox 3.5.6 and chrome 5.0.344) hangs. If i just set width for window large (e.g. from 600px to 800px) - all works fine. May be I'm doing something wrong? Or how can I fix/avoid this 'strange' behaviour?

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  • How to define 'Attached property' as 'SelectedValuePath' in ComboBox?

    - by SpudCZ
    Hi, I have a problem with binding in ComboBox. I'd like to bind ComboBox items to ListView columns and as a selected value return value of attached property defined on the selected column. In example bellow you can see working sample that displays width of selected column. If you try to change SelectedValuePath in ComboBox into (loc:SampleBehavior.SampleValue) you get binding error: BindingExpression path error: '(u:SearchableListView.SearchMemberPath)' property not found on 'object' ''GridViewColumn' <Window x:Class="Problem_Sample1.Window1" xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation" xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" xmlns:loc="clr-namespace:Problem_Sample1" WindowStartupLocation="CenterScreen" Title="Window1" Height="300" Width="300"> <DockPanel> <ComboBox DockPanel.Dock="Top" x:Name="combobox" ItemsSource="{Binding Path=View.Columns, ElementName=listview}" DisplayMemberPath="Header" SelectedValuePath="Width"> </ComboBox> <StatusBar DockPanel.Dock="Bottom"> <TextBlock> <TextBlock Text="Selected column (value): " /> <TextBlock Text="{Binding Path=SelectedValue, ElementName=combobox}" /> </TextBlock> </StatusBar> <ListView x:Name="listview"> <ListView.View> <GridView> <GridViewColumn Header="Name" Width="101" loc:SampleBehavior.SampleValue="201" /> <GridViewColumn Header="Surname" Width="102" loc:SampleBehavior.SampleValue="202" /> </GridView> </ListView.View> </ListView> </DockPanel> </Window>   SampleBehavior.cs using System.Windows; using System.Windows.Controls; namespace Problem_Sample1 { public static class SampleBehavior { public static readonly DependencyProperty SampleValueProperty = DependencyProperty.RegisterAttached( "SampleValue", typeof (int), typeof (SampleBehavior)); [AttachedPropertyBrowsableForType(typeof(GridViewColumn))] public static int GetSampleValue(GridViewColumn column) { return (int)column.GetValue(SampleValueProperty); } [AttachedPropertyBrowsableForType(typeof(GridViewColumn))] public static void SetSampleValue(GridViewColumn column, int value) { column.SetValue(SampleValueProperty, value); } } }   Thanks for any help or suggestion.

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  • Can't Show image in gridview using templates

    - by n10i
    i am trying to load images from the northwind database (categories table, images that are stored in the database) into grid view control. But it dosenot seems to work. Plz! have a look... Default.aspx <asp:GridView ID="GridView1" runat="server" AllowSorting="True" AutoGenerateColumns="False" DataKeyNames="CategoryID" DataSourceID="NorthWindSQLExpressConnectionString" EnableModelValidation="True"> <Columns> <asp:BoundField DataField="CategoryID" HeaderText="CategoryID" InsertVisible="False" ReadOnly="True" SortExpression="CategoryID" /> <asp:BoundField DataField="CategoryName" HeaderText="CategoryName" SortExpression="CategoryName" /> <asp:BoundField DataField="Description" HeaderText="Description" SortExpression="Description" /> <asp:TemplateField HeaderText="Picture" SortExpression="Picture"> <EditItemTemplate> <asp:TextBox ID="TextBox1" runat="server" Text='<%# Bind("Picture") %>'></asp:TextBox> </EditItemTemplate> <ItemTemplate> <asp:Image ID="Image1" runat="server" ImageUrl='<%# RetriveImage(Eval("CategoryID")) %>' /> </ItemTemplate> </asp:TemplateField> </Columns> </asp:GridView> <asp:SqlDataSource ID="NorthWindSQLExpressConnectionString" runat="server" ConnectionString="<%$ ConnectionStrings:NorthwindSQLExpressConnectionString %>" SelectCommand="SELECT [CategoryID], [CategoryName], [Description], [Picture] FROM [Categories]"> </asp:SqlDataSource> </div> </form> [Partial] Default.aspx.cs protected string RetriveImage(object eval) { return ("ImageHandler.ashx?CategoryID=" + eval.ToString()); } [Partial] ImageHandler.ashx public void ProcessRequest(HttpContext context) { if (context.Request.QueryString == null) { } else { try { using (var sqlCon = new SqlConnection(conString)) { const string cmdString = "Select picture from Categories where CategoryID=@CategoryID"; using (var sqlCmd = new SqlCommand(cmdString, sqlCon)) { sqlCmd.Parameters.AddWithValue("@CategoryID", context.Request.QueryString["CategoryID"]); string trmp = sqlCmd.ToString(); sqlCon.Open(); using (var sqlDr = sqlCmd.ExecuteReader()) { sqlDr.Read(); context.Response.BinaryWrite((byte[])sqlDr["Picture"]); } } } } catch (Exception ex) { context.Response.Write(ex.Message); } } }

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  • Multi-Column Primary Key in MySQL 5

    - by Kaji
    I'm trying to learn how to use keys and to break the habit of necessarily having SERIAL type IDs for all rows in all my tables. At the same time, I'm also doing many-to-many relationships, and so requiring unique values on either column of the tables that coordinate the relationships would hamper that. How can I define a primary key on a table such that any given value can be repeated in any column, so long as the combination of values across all columns is never repeated exactly?

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  • How to find if dataTable contains column which name starts with abc

    - by VilemRousi
    In my program I have a dataTable and I´d like to know if is there a column which name starts with abc. For example I have a DataTable and its name is abcdef. I like to find this column using something like this: DataTable.Columns.Constains(ColumnName.StartWith(abc)) Because I know only part of the column name, I cannot use a Contains method. Is there any simple way how to do that? Thanks a lot.

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  • how to bind the image dynamically for datagrid in.cs

    - by prince23
    hi, this is my xaml code. <sdk:DataGrid x:Name="dgMarks" CanUserResizeColumns="False" SelectionMode="Single" AutoGenerateColumns="False" VerticalAlignment="Top" IsReadOnly="True" Margin="13,44,0,0" RowDetailsVisibilityChanged="dgMarks_RowDetailsVisibilityChanged" RowDetailsVisibilityMode="Collapsed" Height="391" HorizontalAlignment="Left" Width="965" SelectionChanged="dgMarks_SelectionChanged" VerticalScrollBarVisibility="Visible" > <sdk:DataGrid.Columns> <sdk:DataGridTemplateColumn> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate> <Button x:Name="myButton" Click="ExpandMarks_Click"> <TextBlock Text="{Binding Level}" TextWrapping="NoWrap" ></TextBlock> <Image x:Name="imgMarks" Stretch="None"/> </Button> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> <sdk:DataGridTemplateColumn Header="Name" Visibility="Collapsed"> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate > <sdk:Label Content="{Binding Name}"/> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> <sdk:DataGridTemplateColumn Header="Marks" Width="80"> <sdk:DataGridTemplateColumn.CellTemplate> <DataTemplate> <sdk:Label Content="{Binding Marks}"/> </DataTemplate> </sdk:DataGridTemplateColumn.CellTemplate> </sdk:DataGridTemplateColumn> </sdk:DataGrid.Columns> </sdk:DataGrid> from database i am getting these values name marks Level abc 23 0 xyz 67 1 yu 56 0 aa 89 1 here i am binding these values for datagrid. i have an tricky thing to be done .based on the level i should be binding image if level value is 1 then bind the image. if level value is 0 then do not bind the image for that row i know this is how we need to handle but where should i write this code in which events? Image imgLevel = (Image)templateTrendScore.FindName("imgMarks"); if (level1==1) { imgLevel .Source = new BitmapImage(new Uri("/Images/image1.JPG", UriKind.Relative)); } any help would be great thanks in advance

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  • What are the differences between these?

    - by Amit Ranjan
    What are the differences between the two queries? SELECT CountryMaster.Id FROM Districts INNER JOIN CountryMaster ON Districts.CountryId = CountryMaster.Id SELECT CountryMaster.Id FROM CountryMaster INNER JOIN Districts ON Districts.CountryId = CountryMaster.Id Please mind the i) Table positions and second ii) On Fields As I know, output will be same. But I want to know, is there any drastic effects of the same if I neglect positions of tables and columns in complex queries or tables having tons of data like thousands and lakhs of rows...

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  • SimpleMembership updating the "isconfirmed" flag

    - by Vijay V
    My Users table (the one that I created) has the following columns: UserId,UserName,FirstName,LastName,DOB After I ran this command WebSecurity.InitializeDatabaseConnection("DefaultConnection", "Users", "UserId", "UserName", autoCreateTables: true); it created the required simple membership tables for me. How would I go about "UnConfirming" an user or setting the "IsConfirmed" flag to false in the webpages_Membership using the new SimpleMembership API? (Earlier, before going to simplemembership using the "Membership" class I could update an user using the api call : Membership.UpdateUser( user );)

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  • Oracle: Is there a way to get the column data types for a view?

    - by rally25rs
    For a table in oracle, I can query "all_tab_columns" and get table column information, like the data type, precision, whether or not the column is nullable. In SQL Developer or TOAD, you can click on a view in the GUI and it will spit out a list of the columns that the view returns and the same set of data (data type, precision, nullable, etc). So my question is, is there a way to query this column definition for a view, the way you can for a table? How do the GUI tools do it?

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