retrieving data and REGEXP

Author: ptyadana

Complete SQL Mastery - Mosh/02.Retrieving Data From a Single Table.sql

@@ -0,0 +1,215 @@
+/*********************************/
+/*      Reterive Data            */
+/*********************************/
+USE mosh_sql_store;
+
+SELECT * FROM customers
+WHERE customer_id > 5
+ORDER BY first_name;
+
+SELECT DISTINCT state
+FROM customers;
+
+/*return all the products name, unit price, new price (unit price *1.1) */
+SELECT name, unit_price, (unit_price *1.1) AS new_price
+FROM products;
+
+/*********************************/
+/*     Operators                 */
+/*********************************/
+/*
+	>
+	<
+	>=
+	<=
+	!=
+	<>
+    AND
+    OR 
+    NOT
+    IN
+    NOT IN
+    BETWEEN
+    LIKE
+    IS NULL
+*/
+
+/*get the orders placed this year*/
+SELECT * FROM orders
+WHERE order_date >= '2020-01-01';
+
+
+SELECT *
+FROM customers
+WHERE birth_date > '1990-01-01' AND points > 1000;
+
+SELECT *
+FROM customers
+WHERE NOT (birth_date > '1990-01-01' AND points > 1000);
+
+/*
+get items of order #6 where total price is greater than 30 
+*/
+SELECT *
+FROM order_items
+WHERE order_id = 6 AND quantity * unit_price > 30;
+
+
+SELECT *
+FROM customers
+WHERE state IN ('VA','GA','FL');
+
+SELECT *
+FROM customers
+WHERE state NOT IN ('VA','GA','FL');
+
+/*return products with quanity in stock equal to 49, 38, 72*/
+SELECT *
+FROM products
+WHERE quantity_in_stock IN (49,38,72);
+
+
+SELECT *
+FROM customers
+WHERE points BETWEEN 1000 AND 3000;
+
+/*return customers born between 1/1/1990 and 1/1/2000*/
+SELECT *
+FROM customers
+WHERE birth_date BETWEEN '1990-01-01' AND '2000-01-01';
+
+/*get the orders that are not shipped*/
+SELECT *
+FROM orders
+WHERE shipped_date IS NULL;
+
+
+SELECT *
+FROM customers
+ORDER BY last_name DESC, state ASC
+LIMIT 10;
+
+SELECT order_id, product_id, quantity, unit_price
+FROM order_items
+WHERE order_id = 2;
+
+/* offset start from 2nd record */
+SELECT order_id, product_id, quantity, unit_price
+FROM order_items
+LIMIT 5 OFFSET 2;
+
+-- customer 5 records start from 6 for pagniation (example 1-5 for one page, 6-10 for second page...)
+SELECT *
+FROM customers
+LIMIT 5,6;
+
+/*get top 3 loyal customers*/
+SELECT *
+FROM customers
+ORDER BY points DESC
+LIMIT 3;
+
+/*
+	% 		any number of characters
+    _		single character
+*/
+SELECT *
+FROM customers
+WHERE last_name LIKE '_____y';
+
+SELECT *
+FROM customers
+WHERE last_name LIKE 'b____y';
+
+/*get customers addresses contain TRAIL or AVENUE OR phone numbers end with 9*/
+SELECT *
+FROM customers
+WHERE address LIKE '%TRAIL%' OR address LIKE '%AVENUE%'
+OR phone LIKE '%9';
+
+
+SELECT *
+FROM customers
+WHERE address REGEXP 'trail|avenue';
+
+SELECT *
+FROM customers
+WHERE phone REGEXP '9$';
+
+/*********************************/
+/*      Regular Expressions      */
+/*********************************/
+SELECT *
+FROM customers
+WHERE last_name LIKE '%field%';
+
+SELECT *
+FROM customers
+WHERE last_name REGEXP 'field';
+
+SELECT *
+FROM customers
+WHERE first_name REGEXP 'I...';
+
+/* 
+^		: beginning of the string of the field
+$		: end of the string
+|		: either OR
+[]		: includes one of these insides []. set of characters [abc] OR [a-h]
+https://www.oreilly.com/library/view/mysql-cookbook/0596001452/ch04s08.html
+*/
+SELECT *
+FROM customers
+WHERE last_name REGEXP 'field$';
+
+SELECT *
+FROM customers
+WHERE last_name REGEXP 'field|mac|rose';
+
+SELECT *
+FROM customers
+WHERE last_name REGEXP '^field|mac|rose';
+
+/*
+ge
+ie
+me
+includes in last name
+*/
+SELECT *
+FROM customers
+WHERE last_name REGEXP '[gim]e';
+
+/*
+ae
+be
+...
+he
+includes in last name
+*/
+SELECT *
+FROM customers
+WHERE last_name REGEXP '[a-h]e';
+
+/*
+Get the customers whose
+- first names are ELKA or AMBUR
+- last names end with EY or ON
+- last name start with MY or contain SE
+- last name contain B followed by R or U
+*/
+SELECT *
+FROM customers
+WHERE first_name REGEXP 'ELKA|AMBUR';
+
+SELECT *
+FROM customers
+WHERE last_name REGEXP 'EY$|ON$';
+
+SELECT *
+FROM customers
+WHERE last_name REGEXP '^MY|SE';
+
+SELECT *
+FROM customers
+WHERE last_name REGEXP 'B[R|U]';