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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. Chapter 7: Comments. Chapter 8: Common Table Expressions. Chapter 9: CREATE Database. Chapter 10: CREATE FUNCTION.
- SQL
Many SQL databases are implemented as client/server systems;...
- Cascading Delete
Cascading Delete - Learning SQL eBook (PDF) -...
- CREATE Database
CREATE Database - Learning SQL eBook (PDF) - riptutorial.com
- Stored Procedures
Stored Procedures are SQL statements stored in the database...
- DROP or DELETE Database
DROP or DELETE Database - Learning SQL eBook (PDF) -...
- In Clause
In Clause - Learning SQL eBook (PDF) - riptutorial.com
- Triggers
Triggers - Learning SQL eBook (PDF) - riptutorial.com
- CASE
Learn SQL - The CASE expression is used to implement if-then...
- SQL
1 maj 2023 · 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...
User-defined functions (UDFs) allow you to extend SQL by creating custom functions. UDFs encapsulate specific logic and can be used within SQL statements just like built-in functions. They provide a way to modularize complex calculations or data transformations, improving code readability and reusability.
SQL is a standard language for storing, manipulating and retrieving data in databases. Our SQL tutorial will teach you how to use SQL in: MySQL, SQL Server, MS Access, Oracle, Sybase, Informix, Postgres, and other database systems. Start learning SQL now »
10 sty 2012 · END can be used directly after an IF and thus the whole block of code in the BEGIN .... END sequence will be either executed or skipped. In your case I suspect the "(more code)" following FROM XXXXX is where your problem is.
5 wrz 2023 · SQL Functions. At the end of the day, SQL is a programming language, and it's one that supports functions. We can use functions and aliases to calculate new columns in a query. This is similar to how you might use formulas in Excel. IIF function. In SQLite, the IIF function works like a ternary. For example:
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.
