mySQL

Is Null/Exercise_IS NULL.sql

@@ -0,0 +1,5 @@
+/* Exercise: Get the orders that are not shipped */
+
+SELECT *
+FROM orders
+WHERE shipped_date IS NULL

Is Null/mySQL_IS NULL.sql

@@ -0,0 +1,8 @@
+USE sql_store; 
+
+SELECT *
+FROM customers
+WHERE phone IS NULL /* You can also do IS NOT NULL and it will show up with people who have phone numbers */
+
+
+

More Operators/EXERCISE_BETWEEN_STATEMENT.sql

@@ -0,0 +1,5 @@
+SELECT *
+FROM customers
+WHERE birth_date BETWEEN '1990-01-01' AND '2000-01-01'
+
+

More Operators/EXERCISE_IN_STATEMENT.sql

@@ -0,0 +1,7 @@
+/* Exercise:
+Return products with 
+	quantity in stock equal to 49,38,72 */
+
+SELECT *
+FROM products
+WHERE quantity_in_stock IN (49,38,72)

More Operators/EXERCISE_LIMIT.sql

@@ -0,0 +1,4 @@
+SELECT *
+FROM customers
+ORDER BY points DESC
+LIMIT 3 -- This should always happen last!!

More Operators/EXERCISE_OPERATORS copy.sql

@@ -0,0 +1,5 @@
+SELECT * 
+FROM customers
+WHERE address LIKE '%tr%' OR address LIKE '%Av%' OR phone LIKE '%9'
+
+

More Operators/EXERCISE_OPERATORS.sql

@@ -0,0 +1,5 @@
+SELECT * 
+FROM customers
+WHERE address LIKE '%tr%' OR address LIKE '%Av%' OR phone LIKE '%9'
+
+

More Operators/EXERCISE_ORDERBY.sql

@@ -0,0 +1,4 @@
+SELECT *, quantity * unit_price AS total_price
+FROM order_items
+WHERE order_id = 2
+ORDER BY total_price DESC

More Operators/Is Null/Exercise_IS NULL.sql

@@ -0,0 +1,5 @@
+/* Exercise: Get the orders that are not shipped */
+
+SELECT *
+FROM orders
+WHERE shipped_date IS NULL

More Operators/Is Null/mySQL_IS NULL.sql

@@ -0,0 +1,8 @@
+USE sql_store; 
+
+SELECT *
+FROM customers
+WHERE phone IS NULL /* You can also do IS NOT NULL and it will show up with people who have phone numbers */
+
+
+

More Operators/Regular Expressions/EXERCISE_REGEXP1.sql

@@ -0,0 +1,5 @@
+/* REGEXP EXERCISE 1 */
+
+SELECT *
+FROM customers
+WHERE first_name REGEXP 'elka|ambur'

More Operators/Regular Expressions/EXERCISE_REGEXP2.sql

@@ -0,0 +1,3 @@
+SELECT *
+FROM customers
+WHERE last_name REGEXP 'ey$|on$' 

More Operators/Regular Expressions/EXERCISE_REGEXP3.sql

@@ -0,0 +1,3 @@
+SELECT *
+FROM customers
+WHERE last_name REGEXP '^my|se' 

More Operators/Regular Expressions/EXERCISE_REGEXP4.sql

@@ -0,0 +1,3 @@
+SELECT *
+FROM customers
+WHERE last_name REGEXP 'b[ru]'

More Operators/Regular Expressions/mySQL_REGEXP.sql

@@ -0,0 +1,13 @@
+SELECT *
+FROM customers
+-- WHERE last_name REGEXP 'field'
+-- WHERE last_name REGEXP '^field' <- this must START with field 
+-- WHERE last_name REGEXP 'field$' <- this must END with field
+/* WHERE last_name REGEXP 'field$|mac|rose' /* <- same as a "IN" statement.. 
+										you can apply to the same techniques above */
+/* WHERE last_name REGEXP '[gim]e' /* This statement takes an expression and returns anything
+									that is ge, ie, or me in their last name */
+/* WHERE last_name REGEXP 'e[fmq]' /* Same thing as line 8, but at the end of e */
+WHERE last_name REGEXP '[a-h]e' /* Same thing as line 10, but at gets anything from a through h */
+/* mySQL has more of these expressions, but these are the ones that you
+will be using 90% of the time. 

More Operators/mySQL_LIMIT.sql

@@ -0,0 +1,3 @@
+SELECT *
+FROM customers
+LIMIT 6, 3 -- start at 6, then get the next 3 (7,8,9)

More Operators/mySQL_OPERATORS_BETWEEN.sql

@@ -0,0 +1,5 @@
+SELECT *
+FROM customers
+-- WHERE points >= 1000 AND points <= 3000
+-- simplier way:
+WHERE points BETWEEN 1000 AND 3000

More Operators/mySQL_OPERATORS_IN.sql

@@ -0,0 +1,8 @@
+SELECT *
+FROM customers
+-- WHERE state = 'VA' OR state = 'GA' OR state = 'FL'
+-- SIMPLIER WAY:
+WHERE state IN ('VA', 'GA', 'FL')
+-- YOU CAN ALSO DO IT WITH NOT STATEMENTS
+-- WHERE state NOT IN ('VA', 'GA', 'FL')
+

More Operators/mySQL_OPERATORS_LIKE.sql

@@ -0,0 +1,7 @@
+SELECT *
+FROM customers
+WHERE last_name LIKE 'b%'
+
+/* Note: 
+Use % to represent any number of characters
+Use _ to represent a single character */

More Operators/mySQL_ORDERBY.sql

@@ -0,0 +1,9 @@
+SELECT /***/ first_name, last_name, 10 AS points
+FROM customers
+-- ORDER BY first_name /* You can use DESC for decending */ 
+-- ORDER BY state, first_name
+-- ORDER by birth_date
+ORDER BY 1,2
+
+/* AVOID THIS FOR NOW... TRY AND LOOK BACK IN THE FUTURE. */
+