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1 cze 2021 · Fetch all names that start with any letter followed by 'atherine': SELECT name FROM names WHERE name LIKE '_atherine'; Fetch all names that end with 'a': SELECT name FROM names WHERE name LIKE '%a'; USEFUL FUNCTIONS. Get the count of characters in a string: SELECT LENGTH('LearnSQL.com');-- result: 12 Convert all letters to lowercase: SELECT ...
10 sty 2012 · It has to do with the Normal Form for the SQL language. IF statements can, by definition, only take a single SQL statement. However, there is a special kind of SQL statement which can contain multiple SQL statements, the BEGIN-END block.
Get a comprehensive cheat sheet for standard SQL functions with examples, definitions, and usage tips. Download this free PDF and master SQL functions today.
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;
2 dni temu · Download the Excel Formulas Cheat Sheet PDF and Excel Files. Provide a Valid Email ID below to download the PDF & Excel Files with 102 Excel Functions. 102 Most Useful Excel Formulas with Examples. Section A – IS FUNCTIONS. 1. ISBLANK. =ISBLANK (value) If a cell is blank, it returns TRUE. If a cell is not blank, it returns FALSE. 2. ISERR.
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 ...
12 wrz 2022 · Learn how to build conditional logic when writing SQL code using IF, BEGIN, END, ELSE, and ELSEIF logic.
