Use when adding indexes, choosing an index type, debugging slow WHERE / ORDER BY / JOIN, indexing JSON paths, or auditing composite-index column-order. Prevents the missing-index full scan, the composite-index wrong column-order trap, redundant indexes wasting writes, and indexing without considerin
Use when adding indexes, choosing an index type, debugging slow WHERE / ORDER BY / JOIN, indexing JSON paths, or auditing composite-index column-order. Prevents the missing-index full scan, the composite-index wrong column-order trap, redundant indexes wasting writes, and indexing without considering selectivity. Covers B-tree (default), FULLTEXT (InnoDB + Aria + MyISAM), SPATIAL R-tree, hash inde