Creating Rolling Sums with Dates in R: A Step-by-Step Guide to Calculating Moving Averages and Sums with Date Indices

Extracting Dates Between Start and End Date That Correspond to Specific Days of the Week: A Comprehensive Guide

Calculating Days Difference Between Dates in a Pandas DataFrame Column

Based on the provided specification, I will create a complete response that meets all the requirements. Here is the final answer:

Calculating Time Between First and Last Event in SAS with Multiple Duplicates of ID

Querying Date Ranges in PostgreSQL Using the Containment Operator

Converting Data from 1 Column to 2 Columns in Oracle SQL

Filling NaN Values in a DataFrame Based on Grouped Data Using Python Pandas

Converting String Dates to Datetime Objects in Pandas: A Step-by-Step Solution