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Starting in college and continuing into my first roles post-graduation, I was tasked with performing various financial and economic analyses to arrive at conclusions about the health of companies, ...

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 ...

Much of the world's data lives in databases. SQL (or Structured Query Language) is a powerful programming language that is used for communicating with and extracting various data types from databases.