Distinct New Customers in SQL: Identifying First-Time Purchasers Within a Year

Using SQL and UNION ALL to Aggregate Data from Multiple Columns

Understanding Cron Expressions for Snowflake Tasks

How to Use LISTAGG, REGEXP_REPLACE, and DISTINCT in SQL for Efficient String Manipulation and Aggregation

Filtering Out Duplicate Values Using SQL's IN and NOT IN Operators

Understanding the `ANY` Operator in Snowflake with Subqueries and Array Functions

Finding Matching Records Between Two Tables Without an ID Column: A Comprehensive Approach

Using EXPLAIN in Snowflake: Visualizing Query Performance Metrics with JSON and TABLE(EXPLAIN)

Building a Table with Dynamic Columns from a Key-Value Array in Snowflake: A Step-by-Step Guide

SQL COUNT Number of Patients Each Month: A Deep Dive