SQL basics I: Data queries Whether you’re just getting in to programming or you’ve avoided learning SQL, it’s something every developer faces eventually.

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Assuring optimal performance of database applications starts with coding properly formulated SQL. Poorly written SQL and application code is the cause of most performance problems. As much as 75% of ...

Shelley Doll finishes her coverage of SQL data types with an overview of datetime and interval data types. Learn more about the basic syntax of these standard SQL types.