Top "Rows" questions

A row is a single data item in a database, spreadsheet, table, grid or list.

sum cells of certain columns for each row

I would like to calculate sums for certain columns and then apply this summation for every row. Unfortunately, I can …

r rows
In R, how do you loop over the rows of a data frame really fast?

Suppose that you have a data frame with many rows and many columns. The columns have names. You want to …

r performance dataframe iteration rows
Combine multiple rows into multiple columns dynamically in SQL Server

I have a large database table on which I need to perform the action below dynamically using Microsoft SQL Server. …

sql sql-server rows multiple-columns
pandas - change df.index from float64 to unicode or string

I want to change a dataframes' index (rows) from float64 to string or unicode. I thought this would work but …

python pandas indexing dataframe rows
Updating one column in all rows in a table

I want to update one same column in all rows in one table can some one give me a hand …

mysql rows updating
change data.frame column into rows in R

A <- c(1,6) B <- c(2,7) C <- c(3,8) D <- c(4,9) E <- c(5,0) …

r rows dataframe
Concatenating multiple rows into single line in MS Access

Possible Duplicate: Combine rows in Access 2007 Access 2007 - Concatenate fields from one column in one table into a single, comma …

ms-access concatenation rows
Unselect all rows in datagridview

I have two datagridviews, and when I click to one of them, I would like to deselect all selection in …

c# winforms datagridview selection rows
Compare Python Pandas DataFrames for matching rows

I have this DataFrame (df1) in Pandas: df1 = pd.DataFrame(np.random.rand(10,4),columns=list('ABCD')) print df1 A B …

python pandas rows matching
How do I make a HTML div go under another div?

<html> <body> <div id="content1"> <div id="text1">This text floats left&…

css html rows