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2 wrz 2024 · It includes fundamental SQL commands like CREATE DATABASE and DROP DATABASE, data manipulation commands such as INSERT INTO and UPDATE, as well as querying techniques using SELECT, WHERE and aggregate functions.
BEGIN--do what needs to be done if exists END ELSE BEGIN--do what needs to be done if not END: GROUP BY: SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY column_name: HAVING: SELECT column_name, aggregate_function(column_name) FROM table_name WHERE column_name operator value GROUP BY ...
28 wrz 2022 · SQL Cheat Sheet. Get a reference for many of the common SQL commands and features on this SQL Cheat Sheet page. This SQL Cheat Sheet applies to Oracle, SQL Server, MySQL, and Postgres. You can also find out more details on these features on the SQL Roadmap page.
Whether you need a quick reference for major SQL concepts before an interview, or you want to level-up your existing SQL skills, our SQL cheat sheet is the ideal starting point. Plus, we’ve broken it down into 11 essential SQL topics to help you get the most from this SQL query cheat sheet.
4 wrz 2023 · This cheat sheet is a comprehensive guide to SQL Server, offering a quick reference to its essential commands. It covers the basics of creating and displaying databases and tables, the commands to modify tables, and the fundamental syntax for T-SQL commands such as SELECT, INSERT, UPDATE, and DELETE.
SELECT name. FROM city WHERE name != 'Berlin' AND name != 'Madrid'; TEXT OPERATORS. Fetch names of cities that start with a 'P' or end with an 's': SELECT name. FROM city WHERE name LIKE 'P%' OR name LIKE '%s'; Fetch names of cities that start with any letter followed by 'ublin' (like Dublin in Ireland or Lublin in Poland):
A comprehensive SQL syntax cheat sheet for quick reference, covering essential commands, functions, operators, and concepts across various database systems. Resources
