Adding assignment1 section 1 and 2

02_activities/assignments/Microcredential_Cohort/assignment1.sql

@@ -7,7 +7,8 @@
 /* 1. Write a query that returns everything in the customer table. */
 --QUERY 1
 
-
+SELECT *
+FROM customer;
 
 
 --END QUERY
@@ -17,7 +18,10 @@
 sorted by customer_last_name, then customer_first_ name. */
 --QUERY 2
 
-
+SELECT * 
+FROM customer 
+ORDER BY customer_last_name ASC, customer_first_name ASC
+LIMIT 10;
 
 
 --END QUERY
@@ -28,7 +32,10 @@ sorted by customer_last_name, then customer_first_ name. */
 Limit to 25 rows of output. */
 --QUERY 3
 
-
+SELECT *
+FROM customer_purchases
+WHERE product_id in (4,9)
+LIMIT 25;
 
 
 --END QUERY
@@ -43,7 +50,11 @@ Limit to 25 rows of output.
 */
 --QUERY 4
 
-
+SELECT *,
+quantity*cost_to_customer_per_qty AS price
+FROM customer_purchases
+WHERE customer_id between 8 and 10 
+LIMIT 25; 
 
 
 --END QUERY
@@ -56,7 +67,15 @@ columns and add a column called prod_qty_type_condensed that displays the word 
 if the product_qty_type is “unit,” and otherwise displays the word “bulk.” */
 --QUERY 5
 
+SELECT product_id,
+product_name
 
+,CASE WHEN product_qty_type = 'unit' 
+	THEN 'unit' 
+	ELSE 'bulk'
+	END as prod_qty_type_condensed
+
+FROM product;
 
 
 --END QUERY
@@ -67,6 +86,22 @@ add a column to the previous query called pepper_flag that outputs a 1 if the pr
 contains the word “pepper” (regardless of capitalization), and otherwise outputs 0. */
 --QUERY 6
 
+SELECT product_id,
+product_name
+
+,CASE 
+	WHEN product_qty_type = 'unit' 
+		THEN 'unit' 
+	ELSE 'bulk'
+	END as prod_qty_type_condensed
+
+,CASE 
+	WHEN LOWER(product_name) LIKE '%pepper%' 
+		THEN 1
+	ELSE 0
+	END as pepper_flag
+
+FROM product;
 
 
 
@@ -79,6 +114,13 @@ vendor_id field they both have in common, and sorts the result by market_date, t
 Limit to 24 rows of output. */
 --QUERY 7
 
+SELECT *
+
+FROM vendor as v
+INNER JOIN vendor_booth_assignments as vba
+	on v.vendor_id = vba.vendor_id
+ORDER BY vba.market_date ASC, v.vendor_name ASC
+LIMIT 24;
 
 
 
@@ -93,6 +135,14 @@ Limit to 24 rows of output. */
 at the farmer’s market by counting the vendor booth assignments per vendor_id. */
 --QUERY 8
 
+SELECT vendor_id, 
+booth_number,
+COUNT (* ) as booth_rental_count
+
+FROM vendor_booth_assignments
+
+GROUP BY vendor_id, booth_number
+ORDER BY vendor_id, booth_number;
 
 
 
@@ -105,6 +155,25 @@ of customers for them to give stickers to, sorted by last name, then first name.
 
 HINT: This query requires you to join two tables, use an aggregate function, and use the HAVING keyword. */
 --QUERY 9
+SELECT cp.customer_id,
+customer_first_name,
+customer_last_name,
+SUM(quantity* cost_to_customer_per_qty) AS total_spend
+
+FROM customer as c 
+INNER JOIN customer_purchases as cp 
+	ON c.customer_id = cp.customer_id
+
+GROUP BY 
+	c.customer_id,
+	c.customer_last_name, -- weirdly the query fails when not grouped by names depite having the id 
+	c.customer_first_name
+
+HAVING SUM(quantity* cost_to_customer_per_qty) > 2000
+
+ORDER BY
+	c.customer_last_name,
+	c.customer_first_name;
 
 
 
@@ -124,9 +193,17 @@ When inserting the new vendor, you need to appropriately align the columns to be
 VALUES(col1,col2,col3,col4,col5) 
 */
 --QUERY 10
+DROP TABLE IF EXISTS temp.new_vendor;
+CREATE TABLE temp.new_vendor AS
 
+SELECT * 
+FROM vendor;
 
+INSERT INTO temp.new_vendor (vendor_id, vendor_name, vendor_type, vendor_owner_first_name, vendor_owner_last_name)
+VALUES (10, 'Thomass Superfood Store', 'Fresh Focused', 'Thomas', 'Rosenthal');
 
+SELECT * 
+FROM temp.new_vendor;
 
 --END QUERY
 
@@ -139,6 +216,12 @@ and year are!
 Limit to 25 rows of output. */
 --QUERY 11
 
+SELECT customer_id,
+strftime('%m', market_date) as purchase_month,
+strftime('%Y', market_date) as purchase_year
+
+FROM customer_purchases
+LIMIT 25;
 
 
 
@@ -153,6 +236,17 @@ but remember, STRFTIME returns a STRING for your WHERE statement...
 AND be sure you remove the LIMIT from the previous query before aggregating!! */
 --QUERY 12
 
+SELECT customer_id,
+SUM(quantity* cost_to_customer_per_qty) AS money_spent
+
+FROM customer_purchases
+
+WHERE strftime('%Y', market_date) = '2022'
+	AND strftime('%m', market_date) = '04'
+
+
+GROUP BY customer_id;
+