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SQL WHERE Clause: Guide and Examples

SQL WHERE Clause: Guide and Examples

In this article, you’ll learn what the WHERE clause is in SQL, how to use it, and see some examples. Description The SQL WHERE clause allows you to filter the results used in your query. It lets you specify the rows that will be used. The WHERE clause can be... Read more
SQL CTE (WITH Clause): The Ultimate Guide

SQL CTE (WITH Clause): The Ultimate Guide

A Common Table Expression (or CTE) is a feature in several SQL versions to improve the maintainability and readability of an SQL query. It goes by a few names: Common Table Expression Subquery Factoring SQL WITH Clause In this article, you’ll learn all about the... Read more
PL/SQL Tutorial: Chapter 7

PL/SQL Tutorial: Chapter 7

PL/SQL Tutorial Chapter 7: Nested Blocks and Packages In this section, you’ll learn:What nested blocks are and how to create themWhat packages are, why you should use them, and how to create them What is a Nested Block in PL/SQL? A nested block is where a block... Read more