Deprecated features — 3 Technical Articles

Nov 22, 2025 · Databases

MySQL 8.4 Upgrade: Removed & Deprecated Features You Must Know

With MySQL 8.0 reaching end‑of‑life in April 2026, DBAs must migrate to the LTS 8.4 release, updating tools and replacing removed system variables, deprecated options, and old commands to avoid breakage in applications, monitoring, and replication setups.

8.4Database MigrationDeprecated features

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MySQL 8.4 Upgrade: Removed & Deprecated Features You Must Know

ITPUB

Sep 13, 2025 · Databases

What’s Changing in MySQL 8.4? Key Removed and Deprecated Variables You Must Update

MySQL 8.0 will lose official support in April 2026, prompting a migration to the LTS 8.4 release, which removes several system variables and functions while deprecating others, so DBAs must adjust configurations, tools, and scripts to avoid compatibility issues.

8.4Database MigrationDeprecated features

0 likes · 7 min read

What’s Changing in MySQL 8.4? Key Removed and Deprecated Variables You Must Update

JavaEdge

Sep 15, 2024 · Databases

What’s New in MySQL 9.0? VECTOR Type, Inline FK, JSON EXPLAIN, and More

This article summarizes MySQL 9.0’s new VECTOR column type, inline and implicit foreign‑key constraints, JSON EXPLAIN ANALYZE storage, prepared event statements, performance‑schema variable tables, enhanced EXPLAIN output, LIMIT 1 subquery support, as well as deprecated and removed features with practical examples.

Deprecated featuresEXPLAIN ANALYZEInline foreign key

0 likes · 13 min read

What’s New in MySQL 9.0? VECTOR Type, Inline FK, JSON EXPLAIN, and More