diff --git a/MySQLNotes.md b/MySQLNotes.md index 1117e32..b865d76 100644 --- a/MySQLNotes.md +++ b/MySQLNotes.md @@ -10,9 +10,8 @@ 1. Connect to MySQL 1. Create a DB 1. CRUD -1. LIKE +1. Operators 1. AND/OR -1. DISTINCT 1. ORDER BY 1. OFFEST/LIMIT 1. ALTER @@ -30,13 +29,21 @@ INSERT INTO employees (NAME, age) VALUES ('Matt' , 34); SELECT age FROM employees; SELECT * FROM employees; UPDATE employees SET weight = 300 WHERE first_name = 'Bill'; - DELETE FROM employees WHERE first_name = "Bill"; -SELECT * FROM employees WHERE NAME LIKE "%Charlie%" OR age = 80; -SELECT DISTINCT name FROM employees WHERE age > 45; +-- OPERATORS SELECT * FROM employees WHERE age != 63; +SELECT * FROM employees WHERE age < 63; +SELECT * FROM employees WHERE age > 63; +SELECT * FROM employees WHERE age >= 63; +SELECT * FROM employees WHERE age <= 63; +SELECT * FROM employees WHERE NAME first_name "%Charlie%"; + +-- AND/OR +SELECT * FROM users WHERE first_name = 'Matt' AND age = 43; +SELECT * FROM users WHERE first_name = 'Matt' OR age = 49; +-- ORDER SELECT * FROM employees ORDER BY age DESC; SELECT * FROM employees ORDER BY age ASC LIMIT 2; SELECT * FROM employees ORDER BY age ASC LIMIT 2 OFFSET 1;