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  • MySQL: Storage of multiple text fields for a record

    - by Tom
    An inexperienced question: I need to store about 10 unknown-length text fields per record into a MySQL table. I expect no more than 50K rows in total for this table but speed is important. The database actions will be solely SELECTs for all practical purposes. I'm using InnoDB. In other words: id | text1 | text2 | text3 | .... | text10 As I understand that MySQL will store the text elsewhere and use its own indicators on the table itself, I'm wondering whether there's any fundamental performance implications that I should be worrying about given the way the data is stored? (i.e. several "sub-fetches" from the table). Thank you.

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  • Populating a Dropdown list in PHP dynamically

    - by mouthpiec
    Hi, I have a small PHP page which contains two drop down lists I need to populate the second one according to the result selected in the first drop down list .... is this possible? In other words I need to use the value selected from the first drop down list and use it in the dB query used to populate the second drop down list (but this should be populated upon selection of the first drop down list. If this is possible any hints please? (you can assume that I am able to populate the first drop down list from the dB) thanks

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  • How to have current page selection using inludes navigation

    - by Anders Kitson
    I am using php includes to limit redundancy on my pages, how can I have my navigation have the current page selected with say a certain color for the HOME button when my navigation is called from a header.php file. If i were to say to add a "active" class to the home.php item and add a style so it looked different, that would happen across the board for all my pages, which is why I am using includes in the first place, how can I have one header.php file with my navigation, that also allows each page the ability to show the current page you are on reflected in the navigation? This is the nav portion of the header.php file <ul> <li><a href="index.php">About Us</a></li> <li><a href="portfolio.php">Portfolio</a></li> <li><a href="news.php">News</a></li> <li><a href="contact.php">Contact</a></li> </ul> This is the index.php file that the header.php file is included in <?php include("includes/header.php"); ?> <div class="span-8" id="welcome"> <p>Lorem ipsum</p> </div> <div class="span-16 last" id="slideshow"> <img src="images/introImage1.png" alt="fountain"> <img src="images/introImage2.png" alt="bench"> <img src="images/introImage3.png" alt="bridge"> </div> <?php include("includes/footer.php"); ?>

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  • Does CSS have a "start over" feature?

    - by Rick Wayne
    I'm using calendar_date_select (henceforth CDS) in a Rails application, and have a stupid question. When I embed the CDS component in the middle of an already-CSS-styled page, all manner of things go ugly-wrong with it (spacing, fonts, etc.). Clearly the elements inside the CDS have inherited unwanted stuff from the styles already working in the containing page. Now, I could use a combination of, say, Safari's CSS debugging and analyze what's wrong element-by-element. But that's (A) tedious, and (B) might load up my component's styles with tons of container-defeating special cases. If nothing else, I'm certain to change the containing page's styles in the future and would have to maintain the special cases. My question: Is is possible to have a DIV in a page that essentially backs out all the existing styling? Is there a simple one-liner that will do this? Failing that, can it be done on an element-by-element basis? E.g. I know what tags the CDS generates, so I could list each of them: { p: "#--NOTHING--#"; a: "#--NOTHING--#"; } where #--NOTHING--# is the Magic Turn Off All Inherited Styles incantation. http://code.google.com/p/calendardateselect/ Thanks, peeps.

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  • R selecting duplicate rows

    - by Matt
    Okay, I'm fairly new to R and I've tried to search the documentation for what I need to do but here is the problem. I have a data.frame called heeds.data in the following form (some columns omitted for simplicity) eval.num, eval.count, ... fitness, fitness.mean, green.h.0, green.v.0, offset.0, green.h.1, green.v.1,...green.h.7, green.v.7, offset.7... And I have selected a row meeting the following criteria: best.fitness <- min(heeds.data$fitness.mean[heeds.data$eval.count = 10]) best.row <- heeds.data[heeds.data$fitness.mean == best.fitness] Now, what I want are all of the other rows with that have columns green.h.0 to offset.7 (a contiguous section of columns) equal to the best.row Basically I'm looking for rows that have some of the conditions the same as the "best" row. I thought I could just do this, heeds.best <- heeds.data$fitness[ heeds.data$green.h.0 == best.row$green.h.0 & ... ] But with 24 columns it seems like a stupid method. Looking for something a bit simpler with less manual typing. Thanks!

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  • Hibernate: Querying objects by attributes of inherited classes

    - by MichaelD
    Hi all, I ran into a problem with Hibernate concerning queries on classes which use inheritance. Basically I've the following class hierarchy: @Entity @Table( name = "recording" ) class Recording { ClassA attributeSet; ... } @Entity @Inheritance( strategy = InheritanceType.JOINED ) @Table( name = "classA" ) public class ClassA { String Id; ... } @Entity @Table( name = "ClassB1" ) @PrimaryKeyJoinColumn( name = "Id" ) public class ClassB1 extends ClassA { private Double P1300; private Double P2000; } @Entity @Table( name = "ClassB2" ) @PrimaryKeyJoinColumn( name = "Id" ) public class ClassB2 extends ClassA { private Double P1300; private Double P3000; } The hierarchy is already given like this and I cannot change it easily. As you can see ClassB1 and ClassB2 inherit from ClassA. Both classes contain a set of attributes which sometimes even have the same names (but I can't move them to ClassA since there are possible more sub-classes which do not use them). The Recording class references one instance of one of this classes. Now my question: What I want to do is selecting all Recording objects in my database which refer to an instance of either ClassB1 or ClassB2 with e.g. the field P1300 == 15.5 (so this could be ClassB1 or ClassB2 instances since the P1300 attribute is declared in both classes). What I tried is something like this: Criteria criteria = session.createCriteria(Recording.class); criteria.add( Restrictions.eq( "attributeSet.P1300", new Double(15.5) ) ); criteria.list(); But since P1300 is not an attribute of ClassA hibernate throws an exception telling me: could not resolve property: P1300 of: ClassA How can I tell hibernate that it should search in all subclasses to find the attribute I want to filter? Thanks MichaelD

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  • The best way to do :not in jQuery?

    - by Smickie
    Hi, I have a menu in jQuery when you click on a link it opens up, but I want it so when you click somewhere else, anywhere else that is not the menu, it becomes hidden. At the moment I'm binding a click event to $(':not(#the_menu)') But this seems like I'm binding a click event to the entire minus the menu, is there a more efficient way of doing something like this?

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  • Summarising grouped records in a dataframe in R (...again)

    - by monch1962
    Hello all, (I tried to ask this question earlier today, but later realised I over-simplified the question; the answers I received were correct, but I couldn't use them because of my over-simplification of the problem in the original question. Here's my 2nd attempt...) I have a data frame in R that looks like: "Timestamp", "Source", "Target", "Length", "Content" 0.1 , P1 , P2 , 5 , "ABCDE" 0.2 , P1 , P2 , 3 , "HIJ" 0.4 , P1 , P2 , 4 , "PQRS" 0.5 , P2 , P1 , 2 , "ZY" 0.9 , P2 , P1 , 4 , "SRQP" 1.1 , P1 , P2 , 1 , "B" 1.6 , P1 , P2 , 3 , "DEF" 2.0 , P2 , P1 , 3 , "IJK" ... and I want to convert this to: "StartTime", "EndTime", "Duration", "Source", "Target", "Length", "Content" 0.1 , 0.4 , 0.3 , P1 , P2 , 12 , "ABCDEHIJPQRS" 0.5 , 0.9 , 0.4 , P2 , P1 , 6 , "ZYSRQP" 1.1 , 1.6 , 0.5 , P1 , P2 , 4 , "BDEF" ... Trying to put this into English, I want to group consecutive records with the same 'Source' and 'Target' together, then print out a single record per group showing the StartTime, EndTime & Duration (=EndTime-StartTime) for that group, along with the sum of the Lengths for that group, and a concatenation of the Content (which will all be strings) in that group. The TimeOffset values will always increase throughout the data frame. I had a look at melt/recast and have a feeling that it could be used to solve the problem, but couldn't get my head around the documentation. I suspect it's possible to do this within R, but I really don't know where to start. In a pinch I could export the data frame out and do it in e.g. Python, but I'd prefer to stay within R if possible. Thanks in advance for any assistance you can provide

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  • Summarising grouped records in a dataframe in R

    - by monch1962
    Hello all, I have a data frame in R that looks like this: > TimeOffset, Source, Length > 0 1 1500 > 0.1 1 1000 > 0.2 1 50 > 0.4 2 25 > 0.6 2 3 > 1.1 1 1500 > 1.4 1 18 > 1.6 2 2500 > 1.9 2 18 > 2.1 1 37 > ... and I want to convert it to > TimeOffset, Source, Length > 0.2 1 2550 > 0.6 2 28 > 1.4 1 1518 > 1.9 2 2518 > ... Trying to put this into English, I want to group consecutive records with the same 'Source' together, then printing out a single record per group showing the highest time offset in that group, the source, and the sum of the lengths in that group. The TimeOffset values will always increase. I suspect this is possible in R, but I really don't know where to start. In a pinch I could export the data frame out and do it in e.g. Python, but I'd prefer to stay within R if possible. Thanks in advance for any assistance you can provide

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  • From comma separated list to individual item result set. *mysql

    - by Raziel
    I'm doing some data migration from a horribly designed database to a less horribly designed database. There is a many to many relationship that has a primary key in one table that corresponds to a comma separated list in another. FK_ID | data ------------- 1,2 | foo 3 | bar 1,3,2 | blarg Is there a way to output the FK_ID field with each comma separated element as a single line in the result set? result set FK_ID | data ------------- 1 | foo 2 | foo 3 | bar 1 | blarg 2 | blarg 3 | blarg I'm thinking this would require some sort of recursive query which I don't think mysql has. Thanks in advance.

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  • a value that shows in select mode disappears in edit mode from a gridview column

    - by Jbob Johan
    i have a gridview(GridView1) with a few Bound Fields first one is Date (ActivityDate) from a table named "tblTime" i have managed to add one extra colum (manually), that is not bound that shows dayInWeek value according to the "ActivityDate" field programtically in CodeBehind but when i enter into Edit Mode , all Bound fields are showing their values correctly but the one column i have added manually will not show the value as it did in "select mode"(first mode b4 trying to edit) while im not a great dibbagger i have manged to view the cell's value (GridView1.Rows[e.NewEditIndex].Cells[1].Text) which does hold on to the day in week value but it does not appear in gridview edit mode only this is some of the code protected void GridView1_RowDataBound(object sender, GridViewRowEventArgs e) { if (e.Row.RowType == DataControlRowType.Header) { e.Row.Cells[0].Text = "?????"; //Activity Date (in hebrew) e.Row.Cells[1].Text = "??? ?????"; //DayinWeek e.Row.Cells[2].Text = "??????"; //ActivityType (work seek vacation) named Reason e.Row.Cells[3].Text = "??? ?????"; //time finish (to Work) e.Row.Cells[4].Text = "??? ?????"; //Time out (of work) } if (e.Row.RowType == DataControlRowType.DataRow) { if (Convert.ToBoolean(ViewState["theSubIsclckd"]) == true) //if submit button clicked { try { string twekday1 = Convert.ToString(DataBinder.Eval(e.Row.DataItem, "ActiveDate")); twekday1 = twekday1.Remove(9, 11); //geting date only without the time- portion string[] arymd = twekday1.Split('/'); // spliting [d m y] in order to make int day = Convert.ToInt32(arymd[1]); // it into [m d y] ...also requierd int month = Convert.ToInt32(arymd[0]); // when i update the table int year = Convert.ToInt32(arymd[2]); DateTime ILDateInit = new DateTime(year, month, day); //finally extracting Day CultureInfo ILci = CultureInfo.CreateSpecificCulture("he-IL"); // in week //from the converted activity date string MyIL_DayInWeek = ILDateInit.ToString("dddd", ILci); ViewState["MyIL_DayInWeek"] = MyIL_DayInWeek; e.Row.Cells[1].Text = MyIL_DayInWeek; string displayReason = DataBinder.Eval(e.Row.DataItem, "Reason").ToString(); e.Row.Cells[2].Text = displayReason; } catch (System.Exception excep) { Js.functions.but bb = new Js.functions.but(); bb.buttonName = "rex"; bb.documentwrite = true; bb.testCsVar = excep.ToString(); bb.f1(bb); // this was supposed to throw exep in javaScript injected from code behid - alert } // just in case.. } } so that works for the non edit period of time then when i hit the edit ... no day in week shows THE aspX - after selcting date... name etc' , click on button to display gridview: <asp:Button ID="TheSubB" runat="server" Text="???" onclick="TheSubB_Click" /> <asp:GridView ID="GridView1" runat="server" OnRowDataBound="GridView1_RowDataBound" onrowediting="GridView1_RowEditing" onrowcancelingedit="GridView1_RowCancelingEdit" OnRowUpdating="GridView1_RowUpdating" BackColor="LightGoldenrodYellow" BorderColor="Tan" BorderWidth="1px" CellPadding="2" ForeColor="Black" GridLines="None" AutoGenerateColumns="False" DataKeyNames="tId" DataSourceID="SqlDataSource1" style="z-index: 1; left: 0%; top: 0%; position: relative; width: 812px; height: 59px; font-family:Arial; text-align: center;" AllowSorting="True" > <AlternatingRowStyle BackColor="PaleGoldenrod" /> <Columns> <asp:BoundField DataField="ActiveDate" HeaderText="ActiveDate" SortExpression="ActiveDate" ControlStyle-Width="70" DataFormatString="{0:dd/MM/yyyy}" > <ControlStyle Width="70px" /> </asp:BoundField> <asp:TemplateField HeaderText="???.???.??"> <EditItemTemplate> <asp:TextBox ID="dayinW_EditTB" runat="server"></asp:TextBox> </EditItemTemplate> <ItemTemplate> <asp:Label ID="dayInW_editLabel" runat="server"></asp:Label> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="Reason" HeaderText="???? ?????" SortExpression="Reason" ControlStyle-Width="50"> <ControlStyle Width="50px" /> </asp:BoundField> <asp:BoundField DataField="TimeOut" HeaderText="TimeOut" SortExpression="TimeOut" ControlStyle-Width="50" DataFormatString="{0:HH:mm}" > <ControlStyle Width="50px"></ControlStyle> </asp:BoundField> <asp:BoundField DataField="TimeIn" HeaderText="TimeIn" SortExpression="TimeIn" ControlStyle-Width="50" DataFormatString="{0:HH:mm}" > <ControlStyle Width="50px"></ControlStyle> </asp:BoundField> <asp:TemplateField HeaderText="????" > <EditItemTemplate> <asp:ImageButton width="15" Height="15" ImageUrl="~/images/edit.png" runat="server" CausesValidation="True" CommandName="Update" Text="Update"> </asp:ImageButton> <asp:ImageButton Width="15" Height="15" ImageUrl="images/cancel.png" runat="server" CausesValidation="False" CommandName="Cancel" Text="Cancel"> </asp:ImageButton> </EditItemTemplate> <ItemTemplate> <asp:ImageButton width="25" Height="15" ImageUrl="images/edit.png" ID="EditIB" runat="server" CausesValidation="False" CommandName="Edit" AlternateText="????"></asp:ImageButton> </ItemTemplate> </asp:TemplateField> <asp:TemplateField HeaderText="???"> <ItemTemplate> <asp:ImageButton width="15" Height="15" ImageUrl="images/Delete.png" ID="DeleteIB" runat="server" CommandName="Delete" AlternateText="???" /> </ItemTemplate> </asp:TemplateField> </Columns> <FooterStyle BackColor="Tan" /> <HeaderStyle BackColor="Tan" Font-Bold="True" /> <PagerStyle BackColor="PaleGoldenrod" ForeColor="DarkSlateBlue" HorizontalAlign="Center" /> <SelectedRowStyle BackColor="DarkSlateBlue" ForeColor="GhostWhite" /> <SortedAscendingCellStyle BackColor="#FAFAE7" /> <SortedAscendingHeaderStyle BackColor="#DAC09E" /> <SortedDescendingCellStyle BackColor="#E1DB9C" /> <SortedDescendingHeaderStyle BackColor="#C2A47B" /> </asp:GridView>

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  • MySQL: Is it possible to return a "mixed" dataset?

    - by Tom
    Hi, I'm wondering if there's some clever way in MySQL to return a "mixed/balanced" dataset according to a specific criterion? To illustrate, let's say that there are potential results in a table that can be of Type 1 or Type 2 (i.e. a column has a value 1 or 2 for each record). Is there a clever query that would be able to directly return results alternating between 1 and 2 in sequence: 1st record is of type 1, 2nd record is of type 2, 3rd record is of type 1, 4th record is of type 2, etc... Apologies if the question is silly, just looking for some options. Of course, I could return any data and do this in PHP, but it does add some code. Thanks.

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  • Can you reuse a mysql result set in PHP?

    - by MarathonStudios
    I have a result set I pull from a large database: $result = mysql_query($sql); I loop through this recordset once to pull specific bits of data and get averages using while($row = mysql_fetch_array($result)). Later in the page, I want to loop through this same recordset again and output everything - but because I used the recordset earlier, my second loop returns nothing. I finally hacked around this by looping through a second identical recordset ($result2 = mysql_query($sql);), but I hate to make the same SQL call twice. Any way I can loop through the same dataset multiple times?

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  • How to do this query?

    - by Damiano
    Hello everybody! I have a mysql table with these columns: ID (auto-increment) ID_BOOK (int) PRICE (double) DATA (date) I know two ID_BOOK values, example, 1 and 2. QUERY: I have to extract all the PRICE (of the ID_BOOK=1 and ID_BOOK=2) where DATA is the same! Table example: 1 1 10.00 2010-05-16 2 1 11.00 2010-05-15 3 1 12.00 2010-05-14 4 2 18.00 2010-05-16 5 2 11.50 2010-05-15 Result example: 1 1 10.00 2010-05-16 4 2 18.00 2010-05-16 2 1 11.00 2010-05-15 5 2 11.50 2010-05-15 ID_BOOK=2 hasn't 2010-05-14 so i jump it. Thank you so much!

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  • SQL COUNT records in table 2 JOINS away

    - by Fred K
    Using MySQL, I have three tables: projects: ID name 1 "birthday party" 2 "soccer match" 3 "wine tasting evening" 4 "dig out garden" 5 "mountainbiking" 6 "making music" batches: ID projectID templateID when 1 1 1 7 days before 2 1 1 1 day before 3 4 2 21 days before 4 4 1 7 days before 5 5 1 7 days before 6 3 5 7 days before 7 3 3 14 days before 8 5 1 14 days before templates: ID message 1 "Hi, I'd like to invite ..." 2 "Dear Sir, Madam, ..." 3 "Can you please ..." 4 "Would you like to ..." 5 "To all dear friends ..." 6 "Does any of you guys ..." I would like to display a table of templates and the number of projects they're used in. So, the result should be: templateID projectCount 1 3 2 1 3 1 4 0 5 1 6 0 I've tried all kinds of SQL queries using various JOINs, but I guess this is too complicated for me. Is it possible to get this result using a single SQL statement?

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