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• Rapidly prototype GUI's...

  - by Donovan

  G'Day, I am looking to prototype a windows based GUI. Ideally I would like: Be able create new GUI's and change existing ones quickly The resulting "thing" to be self contained Have the ability to include limited data where necessary ie. When showing a grid including the headers and perhaps a few rows of data for the grid. Allow clickable hotspots that either allow a new screen to be shown or perhaps an explanation hint. I have been using Visio 2003 for this kind of thing and then producing a PDF. However it has some disadvantages: Including data for grids is not possible You cannot include hotspots to allow changing of tabs within the workbook. eg Click on a button and it opens a different tab. If possible a free / open source application would be preferable but a low priced commercial application would also be good. All pointers and suggestions greatly appreciated.Rapid

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• How can I update multiple columns with a Replace in SQL server?

  - by Kettenbach

  How do I update different columns and rows across a table? I want to do something similiar to replace a string in SQL server I want to do this but the value exists in multiple columns of the same type. The values are foreign keys varchars to an employee table. Each column represents a task, so the same employee may be assigned to several tasks in a record and those tasks will vary between records. How can I do this effectively? Basically something of a replace all accross varying columns throughout a table. Thanks for any help or advice. Cheers, ~ck in San Diego

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• Performance profiler for a java application

  - by Nitin Garg

  I need to optimize a java application. It makes some 3rd party calls. I need some good tool to accurately measure the time taken by individual api calls. To give an idea of complexity- the application takes a data source file containing 10 lakh rows, and it takes around one hour to complete the processing. As a part of processing , it makes some 3rd party calls (including some network calls). I need to identify which calls are taking more time then others, and based on that, find out a way to optimize the application. Any suggestions would be appreciated.

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• T-Sql Modify Insert SProc To Update If Exists.

  - by Goober

  Scenario I have a stored procedure written in T-Sql that I use to insert data into a table as XML. Since the data gets updated regularly, I want the rows to be updated if they already exist (Aside from when the application is first run, they will always exist). Question Below is the code of my Insert Sproc, however I cannot seem to workout the Update side of the stored procedure & would appreciate some help. CODE set ANSI_NULLS ON set QUOTED_IDENTIFIER ON go ALTER PROCEDURE [dbo].[INS_Curve] ( @Curve varchar(MAX) ) AS DECLARE @handle int exec sp_xml_preparedocument @handle OUTPUT, @Curve INSERT INTO CurveDB..tblCurve(LoadID,BusinessDate, Factor) SELECT LoadID,BusinessDate, Factor FROM OPENXML(@handle, 'NewDataSet/Table1',2) WITH( LoadID int, BusinessDate DateTime, Factor float ) exec sp_xml_removedocument @handle

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• Formula needed: Sort array to array-"snaked"

  - by aw

  After the you guys helped me out so gracefully last time, here is another tricky array sorter for you. I have the following array: a = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16] I use it for some visual stuff and render it like this: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Now I want to sort the array to have a "snake" later: // rearrange the array according to this schema 1 2 3 4 12 13 14 5 11 16 15 6 10 9 8 7 // the original array should look like this a = [1,2,3,4,12,13,14,5,11,16,15,6,10,9,8,7] Now I'm looking for a smart formula / smart loop to do that ticker = 0; rows = 4; // can be n cols = 4; // can be n originalArray = [1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16]; newArray = []; while(ticker < originalArray.length) { //do the magic here ticker++; } Thanks again for the help.

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• GWT MVP with a table

  - by Benju

  When working with MVP in GWT how would you work with a table? For example if you had a table of users does your view look like this? public interface MyDisplay{ HasValue<User> users(); } or would it be more like this? public interface MyDisplay{ HasValue<TableRow> rows(); } MVP makes a ton of sense until you start dealing with widgets that need to display lists of non-primitive data. Can anybody shed some light? This mailing list archive appears to ask the same question but never reaches a solid resolution... http://www.mail-archive.com/[email protected]/msg24546.html

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• Using openrowset to read an Excel file into a temp table; how do I reference that table?

  - by mattstuehler

  I'm trying to write a stored procedure that will read an Excel file into a temp table, then massage some of the data in that table, then insert selected rows from that table into a permanent table. So, it starts like this: SET @SQL = "select * into #mytemptable FROM OPENROWSET('Microsoft.Jet.OLEDB.4.0', 'Excel 8.0;Database="+@file+";HDR=YES', 'SELECT * FROM [Sheet1$]')" EXEC (@SQL) That much seems to work. However, if I then try something like this: Select * from #mytemptable I get an error: Invalid object name '#mytemptable' Why isn't #mytemptable recognized? Is there a way to have #mytemptable accessible to the rest of the stored procedure? Many thanks in advance!

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• hidden row causing issue with tablesorter zebra striping

  - by Harvengure

  Sorry if this has already been solved elsewhere but my searches have been able to turn up nothing and my attempts at solving the issue myself have made even less progress. :P Put quite simply I have a table that is using the jquery tablesorter and it's zebra widget. In this table there is a hidden column. I've so far been able to make it so that when a tr contains specific text (I was aiming for * but was seemingly unable to get \* to work for whatever reason...and I suspect my selector is perhaps not specific enough) the containing row is set not to display by ".hide()". The problem I am having though is when the row is hidden, tablesorter does exactly what it should do and stripes all the rows their specific colours based on their odd and even values. Of course .remove doesn't do the trick either as the table still sees some funny striping. Any thoughts on how to make it so that when a row is hidden, the striping compensates?

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• saving information in file in php

  - by Mac Taylor

  hey guys i want to write a tracking system and now i can save in my Mysql database . but saving information about each ip that visits is a huge work for mysql so i think if i could save the information in a file , then there is no discussion about database and its problems . but to begin this : i realy dont know how to save in a file in a way that i can read it with no problem and show the details this is what is used to insert into my database sql_query("insert into tracking (date_time, ip_address, hostname,referer, page , page_title) values ('".sql_quote($dt)."', '".sql_quote($ipaddr)."', '".sql_quote($hostnm)."','$referer', '".sql_quote($pg)."', '".sql_quote($pagetitle)."')", $dbi); i need to show information about all ips in rows , after saving in a file what should i do to save and show in row order ( table ) php/mysql

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• Slow SQLite access on iPhone

  - by georgij

  I have a quite slow data retrieval from a sqlite database on my iPhone and perhaps someone have an alternative idea to explain this. From what I tracked down so far sqlite3_step(statement) is sometimes unusually slow. While retrieving e.g. 50 rows from the database to execute this step takes normally some milliseconds but sometimes it takes several seconds. My database is not small (80MB) and my theory is that the reason is paging. But can someone else think of an other reason for this?

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• WPF Data virtualizing ListView

  - by Robert Jeppesen

  In our current WinForms app, we are displaying millions of records in ListView, using virtualization. Rows are loaded from DB as they are requested. This works well, with good performance. This is a showstopper for migrating to WPF for us. We need data virtualization in a ListView, like WinForms 2.0 has. Do you know a decent third-party control, or a relatively easy way of doing it with built-in controls? It doesn't need to be a DataGrid, a simple ListView will suffice. Note, I'm note talking about UI virtualization, it's data virtualization.

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• Why isn't "String or Binary data would be truncated" a more descriptive error?

  - by rwmnau

  To start: I understand what this error means - I'm not attempting to resolve an instance of it. This error is notoriously difficult to troubleshoot, because if you get it inserting a million rows into a table 100 columns wide, there's virtually no way to determine what column of what row is causing the error - you have to modify your process to insert one row at a time, and then see which one fails. That's a pain, to put it mildly. Is there any reason that the error doesn't look more like this? String or Binary data would be truncated Error inserting value "Some 18 char value" into SomeTable.SomeColumn VARCHAR(10) That would make it a lot easier to find and correct the value, if not the table structure itself. If seeing the table data is a security concern, then maybe something generic, like giving the length of the attempted value and the name of the failing column?

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• using PHP to create multidimensional array from simple JSON array

  - by Michael Robinson

  I have a php query the returns the following JSON format from a table. [{"memberid":"18", "useridFK":"30", "loginName":"Johnson", "name":"Frank", "age":"23", "place":"School", }, It needs the following format: [{"memberid":"18" { "useridFK":"30", "loginName":"Johnson", "name":"Frank", "age":"23", "place":"School",} }, I was told in another question that PHP would work and it looks like "Transversing" might be appropriate, I'm looking to find out what to put in the Php before it returns the JASON. My Array.plist will look like the following: Root: Dictionary V Rows: Array V Item 0: Dictionary Title: String 18 V Children Array V Item 0 Dictionary Title String 30 etc. Thanks in advance.

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• Problem in Setting image in imageview inside ListView in Android?

  - by sunil

  Hi, I have a listview which includes 2 textviews and 1 imageview. Now, the image in imageview will be set on certain conditions otherwise it should be left blank with no image. The problem is the images are not coming in proper rows. Say, for eg the image should be displayed at row 3 but its displayed at row 4. And, in some cases each row will have the same image. Has someone faced this kind of an issue? I am really clueless about the reason behind this. Can anyone point out the problem? Regards Sunil

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• T-SQL: Opposite to string concatenation - how to split string into multiple records

  - by kristof

  I have seen a couple of questions related to string concatenation in SQL. I wonder how would you approach the opposite problem: splitting coma delimited string into rows of data: Lets say I have tables: userTypedTags(userID,commaSeparatedTags) 'one entry per user tags(tagID,name) And want to insert data into table userTag(userID,tagID) 'multiple entries per user Inspired by Which tags are not in the database? question EDIT Thanks for the answers, actually more then one deserves to be accepted but I can only pick one, and the solution presented by Cade Roux with recursions seems pretty clean to me. It works on SQL Server 2005 and above. For earlier version of SQL Server the solution provided by miies can be used. For working with text data type wcm answer will be helpful. Thanks again.

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• plotting results of hierarchical clustering ontop of a matrix of data in python

  - by user248237

  How can I plot a dendrogram right on top of a matrix of values, reordered appropriately to reflect the clustering, in Python? An example is in the bottom of the following figure: http://www.coriell.org/images/microarray.gif I use scipy.cluster.dendrogram to make my dendrogram and perform hierarchical clustering on a matrix of data. How can I then plot the data as a matrix where the rows have been reordered to reflect a clustering induced by the cutting the dendrogram at a particular threshold, and have the dendrogram plotted alongside the matrix? I know how to plot the dendrogram in scipy, but not how to plot the intensity matrix of data with the right scale bar next to it. Any help on this would be greatly appreciated.

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• Join collection of objects into comma-separated string

  - by Helen Toomik

  In many places in our code we have collections of objects, from which we need to create a comma-separated list. The type of collection varies: it may be a DataTable from which we need a certain column, or a List<Customer>, etc. Now we loop through the collection and use string concatenation, for example: string text = ""; string separator = ""; foreach (DataRow row in table.Rows) { text += separator + row["title"]; separator = ", "; } Is there a better pattern for this? Ideally I would like an approach we could reuse by just sending in a function to get the right field/property/column from each object.

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• Free data warehouse - Infobright, Hadoop/Hive or what ?

  - by peperg

  I need to store large amount of small data objects (millions of rows per month). Once they're saved they wont change. I need to : store them securely use them to analysis (mostly time-oriented) retrieve some raw data occasionally It would be nice if it could be used with JasperReports or BIRT My first shot was Infobright Community - just a column-oriented, read-only storing mechanism for MySQL On the other hand, people says that NoSQL approach could be better. Hadoop+Hive looks promissing, but the documentation looks poor and the version number is less than 1.0 . I heard about Hypertable, Pentaho, MongoDB .... Do you have any recommendations ? (Yes, I found some topics here, but it was year or two ago)

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• Plz Help! How to maintain status of gridview checkbox

  - by Royson

  Hi, On my form on left side i have tree-view with check-boxes and on right side grid-view with check-box column. Treeview shows all folders. if user clicked on treenode their files all displayed in gridview. If user checked some files and selects another node and return back it should display checked files as it is. How do i maintain grid-view checked-box column status..? One more query If i checked specific node it should checked all rows of a gridview.

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• Multi Select Checkbox using ListView

  - by Parsa

  I have a CheckBox in the header of ListView. I write a code to select all Checkboxes in ItemTemplate automatically when the user select the checkBox in the header of ListView. This code is useful, when you bind your ListView in DataPager_PreRender. protected void DataPager1_PreRender(object sender, EventArgs e) { //get the user id of the current user Guid userGuid = (Guid)Membership.GetUser().ProviderUserKey; ListView1.DataSource = MyClass.MyStaticMethod(userGuid.ToString()); ListView1.DataBind(); } protected void ListView1_ItemCreated(object sender, ListViewItemEventArgs e) { //Find the checkBox in each Row CheckBox checkBoxRow = e.Item.FindControl("CheckBoxRow") as CheckBox; //Assign the value of checkBoxHeader to the checkBoxRow checkBoxRow.Checked = CheckBoxHeader.Checked; } protected void ListView1_PagePropertiesChanged(object sender, EventArgs e) { // assign false value to the CheckBoxHeader when user click on the DataPager // so if checkboxheader is true in the page 1, when user select Page 2,this check box will be false // therefore all checkbox rows will be false in the new page. if (CheckBoxHeader.Checked == true) CheckBoxHeader.Checked = false; }

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• dojo datagrid will make the page "jump" when sorting is changed

  - by Select0r

  Hi, I have a Dojo Datagrid in one of my pages (which contains more content) and the following problem occurs: As soon as I click on a column header to change the sorting, the page will jump up as if I clicked on some HTML-anchor. Funny enough, the page jump will make the grid show only the first two rows after it jumped, instead of (e.g.) have the grid start at the top of the page after the jump, which is the expected behaviour if an anchor is used. The problem occurs in different browsers (tested: Firefox 3.6, Opera 10, IE6), so I guess it might be a Dojo-problem/-bug. Any ideas to make this annoying behaviour stop? Greetings, Select0r PS: this seems to describe a similar problem, only for JQuery (and unfortunately without a solution, too)

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• Get list of Unique many-to-many records from a queryset

  - by rsp

  My models: class Order(models.Model): ordered_by = models.ForeignKey(User) reasons = models.ManyToManyField(Reason) class Reason(models.Model): description = models.CharField() Basically a user creates an order and gives reasons for that order. ie, john has two orders (one for pencils because he is out AND because he doesn't like his current stock. a second order for pens because he is out). I want to print a list out of all reasons a user has placed his orders. So under john, it should print "he is out", "he doesn't like his current stock"; those two lines only. If I simply select all of john's orders, iterate through them and print out their "reasons" it'll print "he is out", "he doesn't like his current stock" and then "he is out" again. I don't want these duplicate values. How do I select a list of his reasons for ALL his orders so that the list has all unique rows?

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• DROP TABLE fails for temp table

  - by StarBright

  I have a client application that creates a temp table, the performs a bulk insert into the temp table, then executes some SQL using the table before deleting it. Pseudo-code: open connection begin transaction CREATE TABLE #Temp ([Id] AS int) bulk insert 500 rows into #Temp UPDATE [OtherTable] SET [Status]=0 WHERE [Id] IN (SELECT [Id] FROM #Temp) AND [Group]=1 DELETE FROM #Temp WHERE [Id] IN (SELECT [Id] FROM [OtherTable] WHERE [Group]=1) INSERT INTO [OtherTable] ([Group], [Id]) SELECT 1 as [Group], [DocIden] FROM #Temp DROP TABLE #Temp COMMIT TRANSACTION CLOSE CONNECTION This is failing with an error on the DROP statement: Cannot drop the table '#Temp', because it does not exist or you do not have permission. I can't imagine how this failure could occur without something else going on first, but I don't see any other failures occurring before this. Is there anything that I'm missing that could be causing this to happen?

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• Why index_merge is not used here?

  - by user198729

  Setup: mysql> create table t(a integer unsigned,b integer unsigned); mysql> insert into t(a,b) values (1,2),(1,3),(2,4); mysql> create index i_t_a on t(a); mysql> create index i_t_b on t(b); mysql> explain select * from t where a=1 or b=4; +----+-------------+-------+------+---------------+------+---------+------+------+-------------+ | id | select_type | table | type | possible_keys | key | key_len | ref | rows | Extra | +----+-------------+-------+------+---------------+------+---------+------+------+-------------+ | 1 | SIMPLE | t | ALL | i_t_a,i_t_b | NULL | NULL | NULL | 3 | Using where | +----+-------------+-------+------+---------------+------+---------+------+------+-------------+ Is there something I'm missing?

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• How to prevent GetOleDbSchemaTable from returning duplicate sheet names from Excel workbook

  - by Richard Bysouth

  Hi I have a function to return a DataView containing info on sheets in an Excel Workbook, as follows: Public Function GetSchemaInfo() As DataView Using connection As New OleDbConnection(GetConnectionString()) connection.Open() Dim schemaTable As DataTable = connection.GetOleDbSchemaTable(OleDbSchemaGuid.Tables, Nothing) connection.Close() Return New DataView(schemaTable) End Using End Function This works fine except that if the workbook has linked data (i.e. pulls its data from another workbook), duplicate sheet names are returned. For example, Workbook1 has a single worksheet, Sheet1. I get 2 rows in the DataView, with the TABLE_NAME field being "Sheet1$" and "Sheet1$_". OK, I could use a RowFilter, but wondered whether there was a better way or why this extra row is returned? thanks Richard

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