Using an Index with XMLTABLE vs Full Table Scan: A Optimized Approach to Improve Performance in Oracle Queries

Using Lambda Expressions to Query a DataTable Filled by SQL Statement

Extracting Unique Characters within a Field in SQL Using Regular Expressions and Substring Functions

Mastering Aggregate Functions and Group By Clauses in SQL: Best Practices and Examples

Running Count Distinct using Over Partition By: Efficiently Calculating YTD Active Member Counts

Updating Values in a JSON Array Column in Postgres: A Deep Dive

Querying Data from Multiple Sources: A Deep Dive into Joins and Grouping

Creating PL/SQL Stored Procedures to Update Values of a Column Specified by a Parameter

Calculating the Difference between Two Averages in PostgreSQL: A Step-by-Step Guide to Efficient Data Analysis and Manipulation

Understanding SQL Server Attached Databases: Debunking Size Confusion and Optimizing Storage for Performance and Reliability