sql

A set of rules for editing SQL, the language used to query and change databases. It covers queries, database migrations, naming, formatting, joins, aggregations, and performance-related changes.

In plain words
What is it for?
Use it when changing SQL queries, migrations, stored procedures, joins, aggregations, indexes, or database performance checks.
Why use it?
It avoids accidental schema damage, such as editing a migration already applied in production or dropping data while adding a replacement. It also keeps query changes limited to the actual problem.

Cursor rule for Cursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/inboxpraveen/minimize-cursor-cost/sql
Clone the repo
git clone --depth 1 https://github.com/inboxpraveen/Minimize-Cursor-Cost

Made for: Cursor.

Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 383 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00383
Opus 5 $0.00000 $0.00192
Sonnet 5 $0.00000 $0.00077
Haiku 4.5 $0.00000 $0.00038

Measured 2d ago against content hash ee5f5a43b932, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

sql scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 2d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

lean-cursor/.cursor/rules/sql.mdc · 38 lines

What it actually says

SQL Rules

Style

  • Match existing case convention: keywords UPPERCASE vs lowercase, identifiers snake_case vs camelCase.
  • Match existing indentation and trailing-comma style.
  • Don't reformat unrelated lines.

Output

  • For migrations: write only the new migration file's contents. Don't reprint old ones.
  • For query edits: show only the changed clause(s) when possible. If the full query is needed, show it complete (queries don't usefully diff in pieces).

Migrations

  • Never edit a migration that has been applied to production. Add a new migration.
  • Match the existing migration tool's idioms (Alembic, Prisma, Knex, Flyway, Liquibase, raw SQL).
  • Always include a reversible/down step if siblings have one.
  • Don't drop columns/tables in the same migration that adds replacements — split into two.

Queries

  • Don't add SELECT * to existing code that names columns.
  • Don't add new indexes speculatively — call them out as a suggestion instead.
  • Don't change JOIN order or types (INNERLEFT) unless that's the bug.
  • For aggregations, match existing alias style.

Performance

  • Don't add EXPLAIN ANALYZE output to context — summarize it.
  • Don't suggest denormalization or schema redesign as a side-effect of a query fix.

Never

  • Don't use vendor-specific features (Postgres JSONB, MySQL ON DUPLICATE KEY) if the codebase targets multiple DBs.
  • Don't add stored procedures / triggers unless the codebase already uses them.
  • Don't change collation, character set, or timezone settings while doing a feature task.
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 2d ago First seen · 38 lines · 0 tokens per session scan A ee5f5a43b932

Subscribe to this mod's changes

sql is a cursor rule published in the GitHub repository inboxpraveen/Minimize-Cursor-Cost (7 stars, last pushed 17d ago), licensed Apache-2.0. It costs nothing until one of its globs matches a file; then it loads 383 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-31.