Collapse rows from 0 to 0...

Get distinct values from multiple tables efficiently...

Performing functions by week...

How do i add _id column to after $group aggregate?...

Collapsing a data frame over one variable...

MySQL group by and aggregate, how to get the wanted id at the end?...

Collapse dates in R...

Is it possible to group by first characters of a column in SQL?...

SAS: Collapsing and weighted averages calculations...

Collapsing every 4 sequential text rows of same author in r...

SAS collapse dates...

Collapse data by ID in data frame in R...

Combining rows in a data.frame...

collapsing columns values in a specific order and leaving the missing values as NA in R...

Collapse specific rows/cases of dataframe...

r collapse by year by ID...

Create a distribution of immigrants across commune- by country of origin...

Collapsing rows with consecutive ranges in two separate columns...

Turning to variables into one based on logical criteria...

collapse: Modifying Columns by row along with combine values from multiple columns...

Summary of all numeric variables with collapse R package...

collapse R package: rearraning or reposition columns in custom order...

Pulling collapsed summary report from data.table...

groupby in pandas with custom function over a subset of rows in each group...

How to method chaining in pandas to aggregate a DataFrame?...

Change a factor in a DataFrame as-is to an ord.factor using the existing codes and labels...

Format output as JSON object instead of array...

How to use aggregate query in MySQL?...

How can I use SQL to apply a ledger of 'actions' to a given table?...

summarize row values based on two dates from another dataframe...