Posts tagged: database

Remove WordPress database bloat including orphaned postmeta rows, unlimited post revisions, expired transients, and spam comments with safe SQL queries and WP-CLI commands.

Turn on the MySQL slow query log, set the right threshold, and use mysqldumpslow and pt-query-digest to find and fix the queries slowing down WordPress.

Replace slow LIKE queries with MySQL full-text MATCH AGAINST searches to power fast, relevance-ranked search in WordPress plugins and custom queries.

Understand how MySQL indexes work and learn to add the right indexes to WordPress custom tables and meta queries to eliminate slow full-table scans.

Create MySQL stored procedures for batch WordPress database operations like orphan cleanup and category stats, and call them from wpdb.

Create MySQL views to encapsulate complex WordPress JOIN queries into reusable virtual tables you can query from PHP with wpdb.

Build a reliable WordPress plugin migration system with dbDelta, version options and ordered migration functions that run automatically on update.

Use MySQL IN, NOT EXISTS and derived table subqueries to filter and clean WordPress database records efficiently.

Learn INNER JOIN, LEFT JOIN and multi-table joins with practical WordPress SQL examples for posts, meta and taxonomy tables.