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Query to find the record with most matching columns, where the number of columns and names of columns is unknown?
Category : Databases

I have two tables, X and Y, with identical schema but different records. Given a record from X, I need a query to find the closest matching record in Y that contains NULL values for non-matching columns. Identity columns should be excluded from the comparison. For example, if my record looked like this:


------------------------
id | col1 | col2 | col3
---------------

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How to bind dataGridView predefined columns with columns from sql statement (without adding new columns)?
Category : Programming Languages

Is there a elegant way, to bind predefined dataGridView columns with results from sql statement?


Example:


dataGridView1.Columns.Add("EID", "ID");
dataGridView1.Columns.Add("FName", "FirstName");

some sql like SELECT t.FirstName as FName, t.EmpID as EID FROM table t ...


and then I call dataGridView1.DataSource =


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DB2: How to print few columns with conversion along with all other columns without having to write all the names of the columns?
Category : Databases

I have a table having 10 columns, with id, f_name, l_name ..... low_range, high_range, ...


I want to write a query which will print all my table, but just this low_range and high_range to be converted in hex.


I know two things:


1. We can write all the column names and replacing the
low_range with hex(low_range) and high_range with high_range.
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DataGridView - reordering columns through control trigger reorder columns in bound source
Category : Programming Languages

I'm using VB.Net with VS 2012. I have a DGV that's bound to a datatable within a dataset. The DGV can be updated by the user, which updates the datatable bound to the DGV. This all works fine, my problem can be described in the user flow below:


User opens DGV
User reorders rows by clicking the header column in the DGV
A. Columns arrange and display appropriately
User

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How to compare two columns in Excel (from different sheets) and copy values from a corresponding column if the first two columns match?
Category : Programming Languages

I'm trying to compare column a in Sheet 1 with column a in Sheet 2, then copy corresponding values in column b from sheet 1 to column b in Sheet 2 (where the column a values match). I've been trying to read up on how to do this, but I'm not sure if I should be trying to create a macro, or if there's a simpler way to do this, maybe VLOOKUP or MATCH? I'm really not familiar with how these functio


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how to arrange html <table> columns dynamically based on columns sequence given in search
Category : Web Design

I have to diplay output results in table format but columns arrangement is not fixed it can vary depending on user preference.
can anyone please help me in this


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Related boolean columns — separate columns or bitpacked into an integer column?
Category : Databases

Hello I have a database for a certain record where it needs to store a 1 or a 0 for each day of the week. So which one would be better? Bitshifting each bit into an integer and just having an integer in the database named days or should we make all of them separate boolean values so to have sunday, monday, tuesday... columns?


Note that these columns are onl


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In XlSM excel workbook how to remove data from some columns without affecting formula and its value in the columns in POI
Category : Programming Languages

Working on XLSM workbook in that on im trying to remove data from columns leaving formula containing columns using POI.how to achieve this.


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reading first 4 columns from a multiple text files (which might have unbalance number of columns by rows) in r
Category : Web Design

I have the following like text (csv) files to read, where first four columns are of my interest but after that I have alot of junk. I just want to read first four columns into R.



I want first four columns, so that output (csv opened in excel) would look like:



I could not paste the whole file nor attach it due to limitations of SO. Here is smal


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save state of a dataGrid: visible columns, columns width and order
Category : Programming Languages

I want to save remotely (on a database) the state (visible columns, columns width and order) of a Flex3 DataGrid.


For width and visibility I can simply save them by accessing each column attribute.. ugly but possible..
But for the order? Do I have to create the dataGrid dynamically??


Any idea is appreciated
thanks


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