Concatenating Distinct Values with PostgreSQL's STRING_AGG and "Distinct On

Using Recursive Common Table Expressions to Generate a Hierarchy in T-SQL

How to Generate Extra Records with a Given Frequency Using SQL: A Step-by-Step Guide

Understanding Date Data Types in T-SQL for Efficient Date Comparison

Conditional Aggregation to Display Multiple Rows in One Row for Specific Identifier

Retrieving Latest Date and Total Enrollments from Duplicated School Records

Summing Leaf Nodes in SQL Server 2017: A Recursive Query Solution

How to Calculate End Date of Partition Rows Using Start Date of Following Partition in SQL Server

Extracting First Name and Last Name from a Full Name Column in SQL Server Using STRING_SPLIT Function

Mastering Subqueries and Correlated Queries: A SQL Guide for Efficient Data Retrieval