LowFile-scopePHP Plug & play

Consolidate duplicated query logic

Extract reusable SQL fragments/builders for commonly repeated WHERE/ORDER clauses.

Why this matters

Keeps filters consistent and reduces errors when changing criteria.

Side-by-side examples engineers can pattern-match during review.

Avoid

$sql = 'SELECT * FROM orders WHERE status = ? AND created_at >= ?'; // copy-pasted

Prefer

function buildOrderFilterSql(): string { return 'status = ? AND created_at >= ?'; }
$sql = 'SELECT * FROM orders WHERE '.buildOrderFilterSql();

Bad

duplicate WHERE ... in files

Good

buildFilterSql()

From the same buckets as this rule.

Critical
Block risky database migrations (locking ops, downtime risk)
Review SQL/database migrations for operations that can lock large tables or cause downtime. Examples: creating indexes without CONCURRENTLY (Postgres), ALTER COLUMN TYPE on big tables, adding NOT NULL without backfill, long-running updates without batching. Require an online migration strategy (CONCURRENTLY, backfill in batches, dual-write/expand-contract) and a rollback plan.
migrations-backward-compatdatabase-query-performance
High
Add database indexes for query optimization
Index frequently filtered or joined columns and verify with query plans.
database-query-performanceperformance-efficiency
High
Add database indexes for query performance
Index columns used in WHERE/JOIN/ORDER and enforce uniqueness where applicable.
database-query-performance