Categories / sql
A SQL query with a subtle typo that went unnoticed for quite some time.
Calculating 20-Second Intervals in PostgreSQL: Fixed and Dynamic Approaches and Best Practices
Understanding Concatenation in Redshift: A Deep Dive into Efficient String Aggregation Techniques
Calculating Sales Counts for the Last Two Months with Difference in Oracle
Querying Many-to-Many Relationships in SQL: A Comprehensive Approach
Filtering Data in Multiple Columns Simultaneously with SQLAlchemy's Tuple Functionality
Filling Missing Numbers with Null in SQLite Using Recursive Queries
Understanding Null Values with NOT EXISTS in Sub-Queries: A Better Approach
Extracting Year from Date and Converting to Number in Oracle: Best Practices and Optimized Queries
Filtering by Another Flag in SQL: A Deep Dive into Exists Logic, Joins, and Self-Joins