SQL Quality
Find What Is Making Your SQL Slow or Expensive
Make slow or expensive SQL easier to fix.
Find what's making a query slow or expensive and get specific, explainable suggestions.
The problem it solves
Data teams often know a query is slow or expensive, but identifying the cause takes experience: broad scans, non-sargable filters, SELECT *, bad joins, unnecessary sorts, or missing partition pruning.
What it does
Finds performance anti-patterns in SQL.
Suggests rewritten SQL or targeted optimization steps.
Uses schema context and execution plans when available.
Can pair optimization suggestions with equivalence checks.
When to use it
WHEN
a query is slow, expensive, or scanning too much data
BEFORE
productionizing exploratory SQL
WHEN
tuning warehouse workloads
DURING
cost reduction or performance review work
How it works
The skill reviews the SQL, gathers schema or execution context when available, identifies optimization opportunities, and explains what changed and why it helps.