columns
dataframeReturns the column names of a DataFrame
Syntax
columns(dataframe) Parameters
dataframe (dataframe) The DataFrame to get column names from
Returns
array Array of column name strings
Examples
Get all column names from the current DataFrame
Input:
columns Output:
["id", "name", "age"]The columns() function returns an array of column names from a DataFrame. This is useful for inspecting data structure and programmatically accessing columns.
Usage
Use columns() to discover available fields in a dataset, validate column existence, or iterate over DataFrame columns.