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• Is it bad to have a non-clustered index that contains the primary key from the clustered index?

  - by Don

  If you have a table with a clustered index on the Primary Key (int), is it redundant and bad to have one (ore more) non-clustered indexes that include that primary key column as one of the columns in the non-clustered index?

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• What programming shortcuts do you end up regretting or backing out?

  - by bryanjonker

  I saw this question and it reminded me of AutoGenerateColumns in the old DataGrid. The few times I've used them, I ended up backing it out because I needed data formatting past the standard "spit out the Data Source columns." Likewise, with toggle, it sounds like it would save time, but then you end up needing to keep track of state or something else, and you rewrite the code accordingly. Are there things that you end up using thinking it will save you time, but end up backing out because it doesn't do what you need?

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• swing layout: vertical flow

  - by pstanton

  Hi All, What LayoutManager should I use to achieve a transposed version of FlowLayout? Essentially, I want a vertical list which occupies multiple columns if it can't fit all of it's components within one column. +------------------------+ | item 1 | | item 2 | | item 3 | | item 4 | | item 5 | | item 6 | | item 7 | | item 8 | +------------------------+ or +------------------------+ | item 1 item 7 | | item 2 item 8 | | item 3 | | item 4 | | item 5 | | item 6 | +------------------------+

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• How does Zend_Db_Table_Select work?

  - by jwhat

  I'm trying to figure out how to use Zend_Db_Table_Abstract correctly. I want to return just the name column from my query. Can you please explain what's wrong with the following code? class Model_DbTable_Foo extends Zend_Db_Table_Abstract { protected $_name = 'foo'; public function getFooById($id) { $select = $this->select(true)->columns('name')->where('id=' . $id); $row = $this->fetchRow($select); print_r($row->toArray()); } }

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• Naming of boolean column in database table

  - by Space Cracker

  I have 'Service' table and the following column description as below Is User Verification Required for service ? Is User's Email Activation Required for the service ? Is User's Mobile Activation required for the service ? I Hesitate in naming these columns as below IsVerificationRequired IsEmailActivationRequired IsMobileActivationRequired or RequireVerification RequireEmailActivation RequireMobileActivation I can't determined which way is the best .So, Is one of the above suggested name is the best or is there other better ones ?

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• merging and manupulating files in matlab

  - by Paul

  Is there a way to run a loop through a folder and process like 30 files for a month and give the average,max of each columns and write in one excel sheet or so?? I have 30 files of size [43200 x 30] I ran a different matlab scrip to generate them so the names are easy File_2010_04_01.xls , File_2010_04_02.xls ..... and so on I cannot merge them as each are 20mbs and matlab would crash. Any ideas? Thanks

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• how to bind ComboBox with DataTable

  - by niko

  Hi, I have the DataTable with following columns: id, Name, Description, ParentId and would like to create a WPF control (.NET 4.0 framework) which implements a combobox which displays the names which are bound to values of id. So when the user selects a name displayed in the combobox the behind logic has to retrieve its id value. I would be very thankful if anyone could show the way of doing the described above.

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• Can MySQL do row level security or what Oracle calls virtual private databases?

  - by JavaRocky

  Does MySQL have any equivalent feature to Oracle's virtual private databases in 10g. It is also known as row level security. I prefer not to implement anything like columns and triggers. I am looking for a solution similar to Oracle's.

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• Make a table row's text editable immediately

  - by Ricky

  I have an NSTableView in my user interface, where new rows are added when the user presses a button or keyboard shortcut. Each row consists of two text cells (the table is comprised of two columns). Is there a way to immediately select the first text cell of a new row which is added? So, basically, I would like the user to be able to press the button, adding a new row to the table and then having it editable straight away.

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• How can i seperate the first and last name of a cell?

  - by terry

  If A1 is [Jones,Mike], how can I get it to seperate but still use the first name as text in the other cell? Yes, text to columns would work greatly, but it does let me use the first name in a formula.

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• jquery column values on click..

  - by rockers

  Hello all, I have a table with 5 columns,,when I click on first column on the row i need to get the all column row values using jquery? Thanks

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• Format of DataGridView value

  - by Vadim

  I have a DataGridView which is filling from Table in SQL Server Database. One of it's columns is "price". Type of column in DGV is automatically sets as Decimal. In some cases I need to write in cells of this column text like "none", instead of price. How can I do it? DGV.Item("price", 0).Value = "none" doesn't work, because of decimal type of a cell.

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• How to calculate "holes" in timetable

  - by genesiss

  I've got a 2-dimensional array like this (it represents a timetable): http://www.shrani.si/f/28/L6/37YvFye/timetable.png Orange cells are lectures and whites are free time. How could I calculate number of free hours between lectures in the same day? (columns are days and rows are hours) For example, in this table the result should be: 2 for first column 0 for second colum -- The function returns 2 (because 2+0=2)

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• Is there a 'RowSpan = "All"' in WPF

  - by Chris Spicer

  Take for the following for example: <GridSplitter Grid.Row="0" Grid.Column="1" Background="Yellow" HorizontalAlignment="Stretch" VerticalAlignment="Stretch" Width="Auto" Height="Auto" Grid.RowSpan="3" ResizeDirection="Columns etc etc This will create a GridSplitter across the 3 rows that I have in my grid. However, it's conceivable that I might add another row to my grid at a later stage, and I don't really want to go back and have all of my rowspans. My first guess was Grid.RowSpan="*", but that doesn't compile. Does anyone know the answer to this off hand?

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• 2d convolution using python and numpy

  - by mikip

  Hi I am trying to perform a 2d convolution in python using numpy I have a 2d array as follows with kernel H_r for the rows and H_c for the columns data = np.zeros((nr, nc), dtype=np.float32) #fill array with some data here then convolve for r in range(nr): data[r,:] = np.convolve(data[r,:], H_r, 'same') for c in range(nc): data[:,c] = np.convolve(data[:,c], H_c, 'same') It does not produce the output that I was expecting, does this code look OK Thanks

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• Read a file into an array in c++

  - by user320950

  How would I write a program that reads 3 columns and each column has 100 numbers of type int one at a time in c++ ? I'm lost after this: int file1[100]; int file2[100]; int file3[100];

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• Sencha 2 -need help for cf json data (for eg:CFJSONReader )

  - by usershaf

  I am new to sencha , and using sencha 2 mvc. I have a cfc returned json data, which I want to use in my list views. I have read about CFJsonReader and CFQueryReader, but both have been scripted for EXt Js 3 x. I cant see an mvc proper code for sencha 2 anywhere else.I tried many times and all in vein.Please some help suggest me/help me to solve my problem ...My outpur is like : {"QUERY":{"COLUMNS":["CLIENTID"],"DATA":[[1013],[1010],[1016],[1017],[1013]]},"TOTALROWCOUNT":5} Please pls help me...

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• How to Auto-Increment Non-Primary Key? - SQL Server

  - by user311509

  CREATE TABLE SupplierQuote ( supplierQuoteID int identity (3504,2) CONSTRAINT supquoteid_pk PRIMARY KEY, PONumber int identity (9553,20) NOT NULL . . . CONSTRAINT ponumber_uq UNIQUE(PONumber) ); The above ddl produces an error: Msg 2744, Level 16, State 2, Line 1 Multiple identity columns specified for table 'SupplierQuote'. Only one identity column per table is allowed. How can i solve it? I want PONumber to be auto-incremented.

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• c# Column datatype Date type (NOT DateTime)

  - by Sha Le

  Hi All: I want know is there good way to detect Column DataType for Date field (NOT DateTime)? This what currently I do: switch (dt.Columns[col].DataType.FullName) { case "System.DateTime": formatedVal = Formatter.GetDateTime(val); break; // which is NOT possible, but something equivalent am looking for case "System.Date": formatedVal = Formatter.GetDate(val); break; default: formatedVal = val.ToString(); break; } Thanks a bunch. :-)

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• SQL Server 2008 management studio drop tables warning?

  - by Curtis White

  Why does SQL server 2008 always warn about needing to drop tables to rename columns? I was under impression this was not required unless it was a key. If I change a column from null to not null even if is not a key field it wants to drop table and all relations.

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• incrementing a table column's data by one || mySql

  - by Praveen Prasad

  iam having a table with columns like id || counter if i do something (some event) i want the counter's value(at a particular id) to increase by one , currently iam doing this : //get current value current_value = select counter from myTable where id='someValue' // increase value current_value++ //update table with current value update myTable set counter=current_value where id='someValue'; currently iam running 2 queries for this, please suggest me some way do it in one step.

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• Foreign Keys Duplicated in DataGridView

  - by John Doe

  I created a Windows Forms Application to which I added a DataGridView and LINQ to SQL Classes from one of my databases. I can successfully bind one of my database's tables to my DataGridView: var dataSource = from c in _db.NetworkedEquipments select c; dataGridView1.DataSource = dataSource; However, the foreign keys get duplicated, that is, the columns appear twice. How can I prevent this?

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• How to design an exception logging table using HyperTable and access it via the Java client?

  - by ikevinjp

  If I have the following table schema to log an exception (in standard SQL schema): Table: ExceptionLog Columns: ID (Long), ExceptionClass (String), ExceptionMessage (String), Host (String), Port (Integer), HttpHeader (String), HttpPostBody (String), HttpMethod (String) How would I design the same thing in HyperTable (specifically, what is the best approach for efficiency)? And, how would I code it using the HyperTable Java client?

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• Help with SQL query in C#

  - by DanSogaard

  I'm trying to rename the columns. The syntax should be the column name between double quotes incase of two words, like this: SELECT p_Name "Product Name" from items So I'm trying to do it in C# code like this: string sqlqry1 = "SELECT p_Name \"Prodcut Name\" from items"; But I get an error: Syntax error (missing operator) in query expression 'p_Name "Prodcut Name"'. It seems am having somthing wrong with the quotes, but I can't figure out.

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• LINQ to SQL left outer joins

  - by César

  Is this query equivalent to a LEFT OUTER join? var rows = from a in query join s in context.ViewSiteinAdvise on a.Id equals s.SiteInAdviseId where a.Order == s.Order select new {....}; I tried this but it did not result from s in ViewSiteinAdvise join q in query on s.SiteInAdviseId equals q.Id into sa from a in sa.DefaultIfEmpty() where s.Order == a.Order select new {s,a} I need all columns from View

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