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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.
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!
1 cze 2021 · WHEN 0 THEN 'free' ELSE 'not available' END AS tariff FROM ticket_types; The most popular type is the searched CASE WHEN – it lets. you pass conditions (as you'd write them in the WHERE clause), evaluates them in order, then returns the value for the first condition met. SELECT CASE WHEN score >= 90 THEN 'A' WHEN score > 60 THEN 'B' ELSE 'F ...
SQL Functions.pdf. Cannot retrieve latest commit at this time. History. 4.04 MB. SQL files. Contribute to bkirschbaum/SQL development by creating an account on GitHub.
• Oracle Database PL/SQL Language Reference for information on PL/SQL, the procedural language extension to Oracle SQL • Pro*C/C++ Programmer's Guide and Pro*COBOL Programmer's Guide for detailed
When you’re ready to start writing your own SQL queries, rather than spending time creating your own database, consider importing dummy data instead. The MySQL website provides a number of dummy databases that you can download free of charge and then import into your SQL app.
YOUR SQL QUICKSTART GUIDE - Free download as PDF File (.pdf), Text File (.txt) or read online for free. The document provides information about SQL and databases. It defines what a database is and how it is organized with tables, rows, columns, primary keys, and foreign keys.
