Learn how to master the SELECT statement to form truly useful data queries. This article explains functions, clauses, and keywords that will make your life a lot easier. Due to popular demand, we’re ...
PostgreSQL CASE statements make it possible to add conditional logic directly into SQL queries, working similarly to IF ELSE statements in programming languages and spreadsheet tools. This tutorial ...
This fifth edition of a well-known title has been updated for Oracle 12c. As with previous editions, the book is very hands-on; you’re introduced to a concept, shown an example, then asked to work ...
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