How to Write SQL Queries

SQL is a declarative language used for querying, analyzing, and manipulating data. It uses different elements like SELECT, FROM, JOIN, WHERE, GROUP BY, HAVING, ORDER BY, OFFSET, and FETCH to retrieve and analyze data. SQL queries can be used to join tables, filter rows, aggregate data, and sort results. The GROUP BY clause is used to group rows with common values and the HAVING clause is used to filter the grouped rows based on a condition.