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1 cze 2021 · SELECT INITCAP('edgar frank ted cODD'); -- result: Edgar Frank Ted Codd. Get just a part of a string: SELECT SUBSTRING('LearnSQL.com', 9); -- result: .com. SELECT SUBSTRING('LearnSQL.com', 0, 6); -- result: Learn. Replace part of a string: SELECT REPLACE('LearnSQL.com', 'SQL', 'Python');
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.
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;
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.
2 wrz 2024 · In this guide, we will see a comprehensive cheat sheet for essential SQL operations, offering a practical reference for tasks ranging from database creation to advanced data handling techniques.
SQL Query – Cheat Sheet. After completing Master SQL for Data Science (https://www.udemy.com/master-sql-for-data-science/), from Imtiaz Ahmad on Udemy, which I highly recommend, I felt the need to create a cheat sheet for myself so I’ll have the basics to hand when memory fails – which it inevitably does in the beginning...
It starts from the absolute basics (SELECT * FROM table_name;) and guides you to the intermediate level (JOIN, HAVING, subqueries). I added everything that you will need as a data analyst/ scientist. The ideal use case of this cheat sheet is that you print it in color and keep it next to you while you are learning and practicing SQL on your ...
