Read this SQL tutorial to learn when to use SELECT, JOIN, subselects and UNION to access multiple tables with a single statement. It’s sometimes difficult to know which SQL syntax to use when ...

Ask ChatGPT about SQL syntax rules and best practices to ensure efficient and error-free queries. ... Using GROUP BY in SQL. Consider a table named “sales” that stores information about sales ...

While checking SQL syntax itself is somewhat straightforward, [Joe]’s sql-lint tool will also check the semantics of it by looking up the actual database and performing sanity checks on it.