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1 maj 2023 · 7 Free SQL Books for Beginners to Master. Here is my list of some of the best books to learn SQL, which is absolutely free. You can either download their PDF version for offline...
Whether you are a DevOps/SysOps engineer, developer, or just a Linux enthusiast, this free intro to SQL will help you learn the basics and start using relational databases for your SysOps, DevOps, and Dev projects.
5 wrz 2024 · Here is my list of some of the best books to learn SQL, which is absolutely free. You can either download their PDF version for offline reading, or you can read them online. 1. SQL Indexing and Tuning Book: Use the Index, Luke! Author: Markus Winand Download: http://use-the-index-luke.com/ Description: “Use the Index, Luke!: A guide to ...
* Powerful, database-specific features such as SQL Server's PIVOT and UNPIVOT operators, Oracle's MODEL clause, and PostgreSQL's very useful GENERATE_SERIES function * Pivoting rows into columns, reverse-pivoting columns into rows, using pivoting to facilitate inter-row calculations, and double-pivoting a result set
Learning SQL eBook (PDF) Download this eBook for free. Chapters. Chapter 1: Getting started with SQL. Chapter 2: ALTER TABLE. Chapter 3: AND & OR Operators. Chapter 4: Cascading Delete. Chapter 5: CASE. Chapter 6: Clean Code in SQL.
This is an open-source introduction to SQL guide that will help you to learn the basics of SQL and start using relational databases for your SysOps, DevOps, and Dev projects. No matter if you are a DevOps/SysOps engineer, developer, or just a Linux enthusiast, you will most likely have to use SQL at some point in your career.
1 cze 2021 · Standard SQL Functions Cheat Sheet. TEXT FUNCTIONS. CONCATENATION. Use the || operator to concatenate two strings: SELECT 'Hi ' || 'there!'; -- result: Hi there! Remember that you can concatenate only character strings using. ||. Use this trick for numbers: SELECT '' || 4 || 2; -- result: 42.
