Books and articles about SQL Rambler's Top100 Сменить язык на: Русский 25 April 2024 01:57:30
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Oracle SQL

AuthorJames F. Koopmann

Oracle and Regular Expressions

Annotation Unix comes to Oracle in the form of regular expressions to increase the power of searching.


Mini-Tip #10 - Implicit vs. Explicit Conversion

Annotation I'll start off by saying that I believe implicit conversion to be bad. Badder. Evil. A serious no-no! Now, let me give a definition of both types of conversion and explain why I feel that way.

AuthorScott Stephens

Oracle Tip: Understand how NULLs affect IN and EXISTS

AnnotationBy understanding the difference between IN, EXISTS, NOT IN, and NOT EXISTS, you can avoid a very common problem when NULLs appear in the data of a subquery. Scott Stephens helps you understand these differences.

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Рейтинг Rambler's Top100 Alt Упражнения по SQL: обучение, тестирование, сертификация по языку SQL Copyright c 2002-2006. All rights reserved.