Search results
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. Contribu...
2 wrz 2024 · In this section we have compiled SQL cheat sheet for SQL functions. It is used for common tasks like aggregation, filtering, date/time manipulation, and more! 51. Scalar Functions: Functions That Return a Single Value. SELECT UPPER(first_name) AS upper_case_name FROM employees;
10 sty 2012 · END can be used directly after an IF and thus the whole block of code in the BEGIN .... END sequence will be either executed or skipped. In your case I suspect the "(more code)" following FROM XXXXX is where your problem is.
12 wrz 2022 · Learn how to build conditional logic when writing SQL code using IF, BEGIN, END, ELSE, and ELSEIF logic.
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 ...
SQL Cheat Sheet. 1. What is SQL? Why Do We Need It? SQL is a database language that’s used to query and manipulate data in a database, while also giving you an efficient and convenient environment for database management. We can group commands into the following categories of SQL statements: Data Definition Language (DDL) Commands.
The SQL cheat sheet provides you with the most commonly used SQL statements for your reference. You can download the SQL cheat sheet as follows: Download 3-page SQL cheat sheet in PDF format. Querying data from a table. Query data in columns c1, c2 from a table. SELECT c1, c2 FROM t; Code language: SQL (Structured Query Language) (sql)
