•sql
How to handle string or blank in the Integer column?
sqlredshiftaws
Interesting scenario while working on the UPSERT Logic and Star Schema - ETL Batch Load?
Read article
Technical Blog
Tag: #sql
Deep dives into data engineering, cloud architecture, AI/ML, and the technologies that power modern data platforms.
•data-engineering
SQL vs NoSQL: Complete Guide to ACID, CAP, and BASE Models
data-engineeringdata-architecturesql
Comprehensive SQL vs NoSQL comparison for data architects. Deep dive into ACID transactions, CAP theorem, BASE model, OLTP vs OLAP, key-value stores, document databases, and decision cheatsheet for AWS, Azure, and GCP database selection.
Read article
•sql
SQL Server Architecture: Deep Dive for Data Engineers
sqldatabase-architecturedata-engineering
Complete guide to SQL Server architecture for data engineers. Learn relational and storage engines, buffer manager, query optimizer, execution plans, ACID properties, and NoSQL comparison for building efficient data pipelines.
Read article
•sql
PostgreSQL SQL Cheatsheet: Complete Reference Guide
sqlpostgresqldatabase
Essential PostgreSQL SQL reference for data engineers. Covers SELECT, JOINs, aggregations, window functions (LAG, LEAD, RANK), CTEs, JSONB queries, date operations, and performance optimization with practical examples.
Read article
•sql
PostgreSQL: Solving Complex Queries Step-by-Step
sqlpostgresqldata-analytics
Hands-on PostgreSQL tutorial building a daily order analysis report. Learn aggregations, window functions (LAG, SUM OVER), running totals, calendar tables, and query optimization with EXPLAIN plans for production data pipelines.
Read article