The SQL standard timeline: SQL-86 → SQL-92 → SQL:1999 → SQL:2003 → SQL:2023 and what each introduced

The Big Four divergence points: pagination, concatenation, auto-increment, date functions, upsert, boolean, string quoting

How to write portable SQL-92 core queries that work on PostgreSQL, MySQL, SQL Server, and Oracle

The || trap in MySQL and the + trap in SQL Server — and the one safe cross-database solution

How window functions differ across database versions and the MySQL 5.7 gotcha

Enterprise migration patterns: Stripe-style multi-DB SaaS, MySQL→PostgreSQL, Oracle→Snowflake

The SQL standard timeline: SQL-86 → SQL-92 → SQL:1999 → SQL:2003 → SQL:2023 and what each introduced

The Big Four divergence points: pagination, concatenation, auto-increment, date functions, upsert, boolean, string quoting

How to write portable SQL-92 core queries that work on PostgreSQL, MySQL, SQL Server, and Oracle

The || trap in MySQL and the + trap in SQL Server — and the one safe cross-database solution

How window functions differ across database versions and the MySQL 5.7 gotcha

Enterprise migration patterns: Stripe-style multi-DB SaaS, MySQL→PostgreSQL, Oracle→Snowflake