Agent Skills: sql

SQL and relational-database engineering with dialect branches for Postgres, MySQL, Oracle, and SQLite. Load whenever writing, editing, or reviewing SQL: a .sql file, a schema migration, a raw query embedded in application code, index/EXPLAIN/tuning work, or stored procedures/triggers. NOT for ORM entity mapping where no SQL is written (that is /be), and NOT for analytics/warehouse modeling (that is /data).