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SQL Handwritten Notes Repository: A collection of PDF notes covering SQL concepts with concise definitions and examples. Explore fundamental commands, date/time functions, joins, and more. Contributions welcome! Happy studying and coding!
SQL, is a standardized computer language that was originally developed by IBM for querying, altering and defining relational databases, using declarative statements. SQL is pronounced /ˌɛs kjuː ˈɛl/ (letter by letter) or /ˈsiːkwəl/ (as a word). What can SQL do? • SQL can execute queries against a database
This 3-page SQL Cheat Sheet provides you with the most commonly used SQL statements. Download the SQL cheat sheet, print it out, and stick to your desk.
SQL Practical File - Free download as Word Doc (.doc / .docx), PDF File (.pdf), Text File (.txt) or read online for free. The document provides examples of SQL statements for performing various operations on database tables like creating, inserting, updating, deleting records and tables.
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; Chapter 11: CREATE TABLE
1 cze 2021 · Check the documentation for your specific database. LIKE OPERATOR – PATTERN MATCHING Use the _ character to replace any single character. Use the % character to replace any number of characters (including 0 characters). Fetch all names that start with any letter followed by 'atherine': SELECT name FROM names WHERE name LIKE '_atherine';
Create a new table called table_name with 2 fields: field1 and field2. The primary key will be the unique identifier that is always present. Examples of data types are variable characters, date, integer, etc. Twisted logic – it will always bring you all results!
