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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 ...
7 lip 2024 · Learn to create different types of database in Excel. Download library, client, student, employee & membership database templates for free.
SQL GROUP BY. The GROUP BY clause is usually used with an aggregate function (COUNT, SUM, AVG, MIN, MAX). It groups the rows by a given column value (specified after GROUP BY) then calculates the aggregate for each group and returns that to the screen.
25 sie 2023 · Your quick guide to SQL functions! Download the cheat sheet in PDF or PNG for syntax reference, examples, and tips.
25 sie 2021 · This comprehensive cheat sheet is packed with syntax for different text and numeric functions, CASE WHEN statements, handling NULL, date and time types, INTERVAL s, and aggregate functions. It also features a troubleshooting section to help you navigate through common issues seamlessly. Download Options:
24 lut 2020 · Learn how to format your SQL Server results in Excel using conditional formatting to quickly identify patterns and issues.
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.
