diff --git a/02_activities/assignments/Cohort_8/Assignment1 Section1.drawio.pdf b/02_activities/assignments/Cohort_8/Assignment1 Section1.drawio.pdf new file mode 100644 index 000000000..defdb80fd Binary files /dev/null and b/02_activities/assignments/Cohort_8/Assignment1 Section1.drawio.pdf differ diff --git a/02_activities/assignments/Cohort_8/Assignment2 Section1.drawio.pdf b/02_activities/assignments/Cohort_8/Assignment2 Section1.drawio.pdf new file mode 100644 index 000000000..92b503c6d Binary files /dev/null and b/02_activities/assignments/Cohort_8/Assignment2 Section1.drawio.pdf differ diff --git a/02_activities/assignments/Cohort_8/assignment1.sql b/02_activities/assignments/Cohort_8/assignment1.sql index c992e3205..f22c3ca4d 100644 --- a/02_activities/assignments/Cohort_8/assignment1.sql +++ b/02_activities/assignments/Cohort_8/assignment1.sql @@ -5,16 +5,22 @@ --SELECT /* 1. Write a query that returns everything in the customer table. */ +SELECT * FROM customer; /* 2. Write a query that displays all of the columns and 10 rows from the cus- tomer table, sorted by customer_last_name, then customer_first_ name. */ +SELECT * FROM customer +ORDER BY customer_last_name, customer_first_name +LIMIT 10; --WHERE /* 1. Write a query that returns all customer purchases of product IDs 4 and 9. */ +SELECT * FROM customer_purchases +WHERE product_id IN (4, 9); /*2. Write a query that returns all customer purchases and a new calculated column 'price' (quantity * cost_to_customer_per_qty), @@ -26,21 +32,49 @@ filtered by customer IDs between 8 and 10 (inclusive) using either: -- option 2 +-- option 1 (using AND) +SELECT *, ROUND((quantity * cost_to_customer_per_qty), 2) AS price +FROM customer_purchases +WHERE customer_id >= 8 AND customer_id <= 10; +-- option 2 (using BETWEEN) +SELECT *, ROUND((quantity * cost_to_customer_per_qty), 2) AS price +FROM customer_purchases +WHERE customer_id BETWEEN 8 AND 10; --CASE -/* 1. Products can be sold by the individual unit or by bulk measures like lbs. or oz. -Using the product table, write a query that outputs the product_id and product_name +/* @@ -35,35 +51,71 @@ Using the product table, write a query that outputs the product_id and product_n columns and add a column called prod_qty_type_condensed that displays the word “unit” if the product_qty_type is “unit,” and otherwise displays the word “bulk.” */ - +SELECT + product_id, + product_n, + CASE + WHEN product_qty_type = 'unit' THEN 'unit' + ELSE 'bulk' + END AS prod_qty_type_condensed +FROM product; /* 2. We want to flag all of the different types of pepper products that are sold at the market. add a column to the previous query called pepper_flag that outputs a 1 if the product_name contains the word “pepper” (regardless of capitalization), and otherwise outputs 0. */ +SELECT + product_id, + product_name, + CASE + WHEN product_qty_type = 'unit' + THEN 'unit' + ELSE 'bulk' + END AS prod_qty_type_condensed, + CASE + WHEN product_name LIKE '%pepper%' + THEN 1 + ELSE 0 + END AS pepper_flag +FROM product; --JOIN @@ -48,6 +82,12 @@ contains the word “pepper” (regardless of capitalization), and otherwise out vendor_id field they both have in common, and sorts the result by vendor_name, then market_date. */ +SELECT * FROM vendor AS v +INNER JOIN vendor_booth_assignments AS vba + ON v.vendor_id = vba.vendor_id +ORDER BY + v.vendor_name, + vba.market_date; /* SECTION 3 */ @@ -56,6 +96,11 @@ vendor_id field they both have in common, and sorts the result by vendor_name, t /* 1. Write a query that determines how many times each vendor has rented a booth at the farmer’s market by counting the vendor booth assignments per vendor_id. */ +SELECT + vendor_id, + COUNT(vendor_id) AS number_booth_rentals +FROM vendor_booth_assignments +GROUP BY vendor_id; /* 2. The Farmer’s Market Customer Appreciation Committee wants to give a bumper @@ -64,20 +109,35 @@ 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. */ - - ---Temp Table -/* 1. Insert the original vendor table into a temp.new_vendor and then add a 10th vendor: -Thomass Superfood Store, a Fresh Focused store, owned by Thomas Rosenthal - -HINT: This is two total queries -- first create the table from the original, then insert the new 10th vendor. -When inserting the new vendor, you need to appropriately align the columns to be inserted -(there are five columns to be inserted, I've given you the details, but not the syntax) - +SELECT + c.customer_id, + c.customer_first_name, + c.customer_last_name, + ROUND(SUM(cp.quantity * cp.cost_to_customer_per_qty), 2) AS total_spent +FROM customer AS c +JOIN customer_purchases AS cp + ON c.customer_id = cp.customer_id +GROUP BY + c.customer_id, + c.customer_first_name, + c.customer_last_name +HAVING + total_spent > 2000.00 +ORDER BY + total_spent DESC, + c.customer_last_name ASC, + c.customer_first_name ASC; + + +/* --Temp Table +@@ -77,20 +129,11 @@ When inserting the new vendor, you need to appropriately align the columns to be -> To insert the new row use VALUES, specifying the value you want for each column: VALUES(col1,col2,col3,col4,col5) */ +DROP TABLE IF EXISTS new_vendor; +CREATE TEMPORARY TABLE new_vendor AS +SELECT * FROM vendor; -- Date @@ -93,4 +153,5 @@ Remember that money spent is quantity*cost_to_customer_per_qty. HINTS: you will need to AGGREGATE, GROUP BY, and filter... but remember, STRFTIME returns a STRING for your WHERE statement!! */ - +INSERT INTO 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'); diff --git a/farmersmarket - Assignment 1 Section 2.sqbpro b/farmersmarket - Assignment 1 Section 2.sqbpro new file mode 100644 index 000000000..8bf06ba96 --- /dev/null +++ b/farmersmarket - Assignment 1 Section 2.sqbpro @@ -0,0 +1 @@ +-- Reference to file "C:/Users/admin/sql/02_activities/assignments/Cohort_8/assignment1.sql" (not supported by this version) --