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• Forwarding sent mail through postfix

  - by D_f-r

  So I've successfully forwarded mail from my postfix server to remote Gmail accounts using /etc/aliases and newaliases. But now of course those Gmail accounts cannot send email originating from the original, aliased addresses without further configuration. I examined the Gmail configuration and found that it is indeed possible to forward sent emails via SMTP through the postfix server, but an account with a password is necessary. Even though those accounts are simply aliases, is it possible to give them passwords to facilitate replying to emails they forward? Or is an entirely different configuration set-up necessary?

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• SQL Server -> 'SQL_Latin1_General_CP1_CI_AS' Collation -> Varchar Column -> Languages Supported

  - by Ajay Singh

  All, We are using SQL Server 2008 with Collation Setting as 'SQL_Latin1_General_CP1_CI_AS'. We are using Varchar column to store textual data. We know that we cannot store Double Byte data in Varchar column and hence cannot support languages like Japanese and Chinese without converting it to NVarchar. However, will it be safe to say that all Single Byte Characters can be stored in Varchar column without any problem? If yes then from where can I get the list of languages which needs Single Byte for storage and the list of languages which needs double byte? Any assistance in this regard is highly appreciated. Thanks in advance.

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• C# (ADO.Net): Defining DateDiff for a calculated column in a datatable

  - by Nir

  I have the column DateTimeExpired, and I would like to create another column called "Expired" which will show "Yes" or "No" according to the expiration date - "Yes" if the date has already passed. I wrote this: DataColumn colExpirationDate = new DataColumn("DateTimeExpired", typeof(DateTime)); DataColumn colExpired = new DataColumn("Expired", typeof(string), "IIF(DateDiff(DateTimeExpired, date())>= 0,'No','Yes')"); But I get an exception "The expression contains undefined function call DateDiff()." (please note that I always want to get the row, no matter if it's expired or not) How do I set the column's text to the correct form? Thanks!

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• Defining DateDiff for a calculated column in a datatable

  - by Nir

  I have the column DateTimeExpired, and I would like to create another column called "Expired" which will show "Yes" or "No" according to the expiration date - "Yes" if the date has already passed. I wrote this: DataColumn colExpirationDate = new DataColumn("DateTimeExpired", typeof(DateTime)); DataColumn colExpired = new DataColumn("Expired", typeof(string), "IIF(DateDiff(DateTimeExpired, date())>= 0,'No','Yes')"); But I get an exception "The expression contains undefined function call DateDiff()." (please note that I always want to get the row, no matter if it's expired or not) How do I set the column's text to the correct form?

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• Modifying a column with the 'Identity' pattern is not supported in WCF RIA Services

  - by Banford

  I've been following the walkthrough for creating your first WCF RIA Services Application from Microsoft and have encountered a problem when trying to edit and update data using the SubmitChanges() method of the Data Context. The table being updated has an Identity Specification set in SQL Server 2008 on the 'CourseID' column. However the PRIMARY key is a composite of two other fields. When using SubmitChanges() the application locks up in the browser an presents an unhandled exception. By handling this exception I managed to get the message: Modifying a column with the 'Identity' pattern is not supported. This is referring to the 'CourseID' column. Turning identity specification off solves the problem, but I need the auto-incrementing ID. In what way isn't this supported. Or where am I going wrong?

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• Rails migration to add boolean column to Postgres on Heroku

  - by pmc255

  I'm trying to execute a simple Rails migration to add a boolean column to an existing table. Here's the add_column call: add_column :users, :soliciting, :boolean, :null => false, :default => false However, after the migration runs (successfully, with no errors), I don't see the new column. If I go into the console and list the columns on the User table, for example, with this command: >> User.columns.each { |c| puts "#{c.name} : #{c.type}" } All the other columns show up, but not the one I just added with the migration. What's even more strange is that looking up a random user object yields the Postgres version of booleans (Ruby strings) >> User.find(1).soliciting => "t" However, the existing boolean columns all show up with standard Ruby boolean values of true and false. What's going on here? Is the migration actually complete? Why doesn't the column show up, yet is accessible in the model objects?

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• Emacs Column based Narrowing or Folding

  - by froit

  Is there column based narrowing in emacs. I tend narrow in one everything between script tags but that still keeps the original indent (space before var). It would be great if I could actually column narrow to the the beginning of the indent since otherwise the electrict indent tries to bring it to column 0. var foo = 1; var bar = 2; Alternate solution could be to mark the starting indents as uneditable, but I am also not sure how to do this. P.S. I am aware of MMM and NXHTML and html-helper-modes, but I am not looking to use them due to complexities.

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• NSTableView setting the sort column?

  - by overcyn

  I have a NSTableView with multiple columns. clicking each of the columns sorts by the column like in iTunes. However when the tableview first loads the rows are unsorted and no tablecolumn is highlighted or displaying the up/down indicator image. I'm wondering if theres a simple way I can programmatically set the column the table is sorted by and set the indicator image on startup. The only solution I can think of is using [NSTableView setIndicatorImage: inTableColumn:] and [NSTableView setHighlightedColumn:], but that makes it so that clicking on the header doesnt highlight the column. I would rather not have to use tableView:mouseDownInHeaderOfTableColumn: and rewrite the whole click on header to sort thing.

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• How to Set a gridview column width when binding to a datatable

  - by Bob Avallone

  I am binding a table to a gridview in asp.net as such grdIssues.DataSource = mdtIssues; grdIssues.DataBind(); The problem is I cannot then control the column width, asp.net seems to decided on it's own what width each column should be. Methods such as grdIssues.Columns[0].ItemStyle.Width = 100; grdIssues.Columns[1].ItemStyle.Width = 100; don't work because the columns are created dynamically. I cannot believe there isn't a way to do this short of manually creating each column and filling each row. Regards, Bob Avallone

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• Content type with workflow and lookup column

  - by Sachin

  Hi All, I have a requirment where I want to upload a document based on category and subcategory. I have added this columns as an lookup column which pulls data from category and subcategory list. Now want the document should be passed from series of approval so I have attached SharePoint out of the box Approval workflow to this document library. Now I want to create a content type which contains these two lookup column and approval workflow. So that I can user these setting for rest of the document library. Can any one tell me how to create a content type with workflow and lookup column. Thanks in advance Sachin

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• How can custom properties be added to a column in Doctrine

  - by murze

  With doctrine if you execute this code $columns = $accountTable->getColumns(); foreach ($columns as $column) { print_r($column); } you could get for example this as result: Array ( [type] => integer [length] => 20 [autoincrement] => 1 [primary] => 1 ) Array ( [type] => string [length] => 255 ) Is there a way to add custom properties to a column, so that the result would be: Array ( [type] => integer [length] => 20 [autoincrement] => 1 [primary] => 1 [customproperty] => customvalue ) Array ( [type] => string [length] => 255 )

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• How can I search for numbers in a varchar column

  - by dave

  I've got a simple nvarchar(25) column in an SQL database table. Most of the time, this field should contain alphanumeric text. However, due to operator error, there are many instances where it contains only a number. Can I do a simple search in SQL to identify these cases? That is, determine which rows in the table contain only digits in this column. As an extension, could I also search for those column values which contain only digits and a space and/or slash. In other languages (eg. Perl, Java) a regular expression would resolve this quickly and easily. But I haven't been able to find the equivalent in SQL.

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• Conditionally set a column to its default value in Postgres

  - by Evgeny

  I've got a PostgreSQL 8.4 table with an auto-incrementing, but nullable, integer column. I want to update some column values and, if this column is NULL then set it to its default value (which would be an integer auto-generated from a sequence), but I want to return its value in either case. So I want something like this: UPDATE mytable SET incident_id = COALESCE(incident_id, DEFAULT), other = 'somethingelse' WHERE ... RETURNING incident_id Unfortunately, this doesn't work - it seems that DEFAULT is special and cannot be part of an expression. What's the best way to do this?

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• linq to sql string property from non-null column with default

  - by Barry Fandango

  I have a LINQ to SQL class "VoucherRecord" based on a simple table. One property "Note" is a string that represents an nvarchar(255) column, which is non-nullable and has a default value of empty string (''). If I instantiate a VoucherRecord the initial value of the Note property is null. If I add it using a DataContext's InsertOnSubmit method, I get a SQL error message: Cannot insert the value NULL into column 'Note', table 'foo.bar.tblVoucher'; column does not allow nulls. INSERT fails. Why isn't the database default kicking in? What sort of query could bypass the default anyway? How do I view the generated sql for this action? Thanks for your help!

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• Using "CASE" in Where clause to choose various column harm the performance

  - by zivgabo

  I have query which needs to be dynamic on some of the columns, meaning I get a parameter and according its value I decide which column to fetch in my Where clause. I've implemented this request using "CASE" expression: (CASE @isArrivalTime WHEN 1 THEN ArrivalTime ELSE PickedupTime END) >= DATEADD(mi, -@TZOffsetInMins, @sTime) AND (CASE @isArrivalTime WHEN 1 THEN ArrivalTime ELSE PickedupTime END) < DATEADD(mi, -@TZOffsetInMins, @fTime) If @isArrivalTime = 1 then chose ArrivalTime column else chose PickedupTime column. I have a clustered index on ArrivalTime and nonclustered index on PickedupTime. I've noticed that when I'm using this query (with @isArrivalTime = 1), my performance is a lot worse comparing to only using ArrivalTime. Maybe the query optimizer can't use\choose the index properly in this way? I compared the execution plans an noticed that when I'm using the CASE 32% of the time is being wasted on the index scan, but when I didn't use the CASE(just usedArrivalTime`) only 3% were wasted on this index scan. Anyone know the reason for this?

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• Get current updated column name to use in a trigger

  - by Serge

  Is there a way to actually get the column name that was updated in order to use it in a trigger? Basically I'm trying to have an audit trail whenever a user inserts or updates a table (in this case it has to do with a Contact table) CREATE TRIGGER `after_update_contact` AFTER UPDATE ON `contact` FOR EACH ROW BEGIN INSERT INTO user_audit (id_user, even_date, table_name, record_id, field_name, old_value, new_value) VALUES (NEW.updatedby, NEW.lastUpdate, 'contact', NEW.id_contact, [...]) END How can I get the name of the column that's been updated and from that get the OLD and NEW values of that column. If multiple columns have been updated in a row or even multiple rows would it be possible to have an audit for each update?

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• Lookup Field as a Site Column via CAML

  - by Rob Windsor

  I'm trying to create a Lookup Field as a Site Column via CAML. The list I want to use as the source of the lookup is created in the Feature Receiver so I don't know it's ID. I've read several blog posts that indicate that I can just put the path to the list in the List attribute. It seems from the comments on these post that this solution works for some people but not for others. I'm in the latter group. When I try to associate a content type that uses the lookup site column I: "Exception from HRESULT: 0x80040E07" <Field ID="{da94e56b-428f-4b95-b4c6-24aed0256475}" Name="Test_x0020_Lookup_x0020_Column" StaticName="Test_x0020_Lookup_x0020_Column" DisplayName="Test Lookup Column" Type="Lookup" Required="FALSE" List="Lists/Test" ShowField="Title" PrependId="TRUE" Group="Test Site Columns" /> <ContentType ID="0x0100B6D92594DDCE8E479D0EB0C414C463B0" Name="Test Lookup Content Type" Version="0" Group="Test Content Types"> <FieldRefs> <FieldRef ID="{da94e56b-428f-4b95-b4c6-24aed0256475}" Name="Test_x0020_Lookup_x0020_Column" Required="TRUE" /> </FieldRefs> </ContentType>

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• datagrid column issue with MouseEnter events

  - by prince23

  hi, i have 3 data grid placed working fine with expand and collapse. now i have an requirement where i have an grid with four columns starting from name age mailId address once user moves mouse over the *name column only. i need to call the MouseEnter Event* here i am showing an pop grid whereas when i move mouse over the other columns like i need call the MouseLeave Event here i need to hide the pop grid right now once user click on the row on any column values i am showing an pop up grid with all the details of that row. here i am using Selection Changed Event is there any way i can achieve this functionality like on move mouse over only the first column need to display the data and call the mouse events thanks in advance looking for an help. i am at few steps away from the solution let me know how to solve it. prince

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• Excel - Combine multiple columns into one column

  - by Akib

  Hey everyone. I'm new to excel and VBA and I'm stuck at this problem. I have multiple lists that are in separate columns in excel. What I need to do is combine these columns of data into one big column. I do not care if there are duplicate entries, however I want it to skip row 1 of each column. ROW1| 1 2 3 ROW2| A D G ROW3| B E H ROW4| C F I should combine into A B C D E F G H I The first row of each column needs to be skipped.

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• How to set specific column settings in JTable?

  - by HansDampf

  How can I make my JTable show specific stuff for each column? Can I use an Object for more than one column? I want to have a column showing the date (dd.mm.yyyy) and another to show the time (hh:mm) but as I have it now it only shows the String representation of the Date object as a whole. public class AppointmentTableModel extends AbstractTableModel { ... @Override public Object getValueAt(int rowIndex, int columnIndex) { return appointments.get(rowIndex).getByColumn(columnIndex); } } public class Appointment { ... public Object getByColumn(int columnIndex) { switch (columnIndex) { case 0: return date; case 1: return date; case 2: return sample; case 3: return sample; case 4: return history; case 5: return comment; } return null; } }

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• Handling changes in column order when importing CSV files

  - by Scott

  I have a CSV file. The first row will always contain column headers. Depending on a variety of factors, the order of columns may change and, in rare circumstances, some columns may not be present. These changes are beyond my control. My thoughts, so far, on how to address this. I'll read the first row of the file and use the values to generate a list of columns contained in the source file. The destination file will use the same column names as the source. This should be as simple as searching for identical names in the source and destination, then just mapping the column index values, right? What are your recommendations for handling this?

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• ssrs column groups disable multiple columns

  - by DKS

  I'm using ASP.NET 4.0 Visual Studio 2010 RC version Sql Server Report Services (SSRS) ReportViewer and are aware that columns only display on PDF export - not the preview. I want to use a matrix embedded in a table on a page that has multiple columns. I've done some testing and frustratingly found that if you have a tablix with at least one grouped column (even if there is only one displayed matrix-like column group) the columns seem to be disabled. Once I remove the tablix with a grouped column from the tablix from the report the report does multiple-columns. Does anyone know a way around this?

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• How binding each column to other data source..

  - by liran

  hello, i have datagridview and Object data source : public class Data { public general general { get; set; } public Person Person { get; set; } } public class general { public int Id { get; set; } public int Name { get; set; } } public class Person { public int Tag { get; set;} } } i want to bind first column to general.id and second to person.Tag, how i do this, its is possible to bind each column to other dataSource without add any code in data, person or general classes. maybe need to add column manually? Thanks

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• Select records from XML column (SQL Server 2005) based on node order

  - by jdoe

  I have a column in a SQL Server 2005 table defined as an XML column. Is there a way to select records from this table based on the order of two nodes in that column? For example, we have the following structure in our XML: <item> <latitude/> <longitude/> </item> I want to see if there are any records that have latitude/longitude in the opposite order i.e. <longitude/> then <latitude/>. I've tried some XPath expressions but with no luck.

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• do.call(rbind, list) for uneven number of column

  - by h.l.m

  I have a list, with each element being a character vector, of differing lengths I would like to bind the data as rows, so that the column names 'line up' and if there is extra data then create column and if there is missing data then create NAs Below is a mock example of the data I am working with x <- list() x[[1]] <- letters[seq(2,20,by=2)] names(x[[1]]) <- LETTERS[c(1:length(x[[1]]))] x[[2]] <- letters[seq(3,20, by=3)] names(x[[2]]) <- LETTERS[seq(3,20, by=3)] x[[3]] <- letters[seq(4,20, by=4)] names(x[[3]]) <- LETTERS[seq(4,20, by=4)] The below line would normally be what I would do if I was sure that the format for each element was the same... do.call(rbind,x) I was hoping that someone had come up with a nice little solution that matches up the column names and fills in blanks with NAs whilst adding new columns if in the binding process new columns are found...

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