diff --git a/02_activities/assignments/Microcredential_Cohort/assignment1.sql b/02_activities/assignments/Microcredential_Cohort/assignment1.sql index 2ec561e2a..3d128ad22 100644 --- a/02_activities/assignments/Microcredential_Cohort/assignment1.sql +++ b/02_activities/assignments/Microcredential_Cohort/assignment1.sql @@ -6,20 +6,26 @@ --SELECT /* 1. Write a query that returns everything in the customer table. */ --QUERY 1 - - - - +SELECT +customer_id +,customer_first_name +,customer_last_name +,customer_postal_code +FROM customer; --END QUERY /* 2. Write a query that displays all of the columns and 10 rows from the customer table, sorted by customer_last_name, then customer_first_ name. */ --QUERY 2 - - - - +SELECT +customer_id +,customer_first_name +,customer_last_name +,customer_postal_code +FROM customer +WHERE customer_id BETWEEN 1 and 10 +ORDER BY customer_last_name, customer_first_name; --END QUERY @@ -27,10 +33,17 @@ sorted by customer_last_name, then customer_first_ name. */ /* 1. Write a query that returns all customer purchases of product IDs 4 and 9. Limit to 25 rows of output. */ --QUERY 3 - - - - +SELECT +product_id, +vendor_id, +market_date, +customer_id, +quantity, +cost_per_quantity, +transaction_time +FROM customer_purchases +WHERE customer_id BETWEEN 4 AND 9 +LIMIT 25; --END QUERY @@ -42,10 +55,18 @@ filtered by customer IDs between 8 and 10 (inclusive) using either: Limit to 25 rows of output. */ --QUERY 4 - - - - +SELECT +product_id +,vendor_id +,market_date +,customer_id +,quantity +,cost_per_quantity +,transaction_time +,quantity*cost_per_quantity AS 'price' +FROM customer_purchases +WHERE customer_id BETWEEN 8 and 10 +LIMIT 25; --END QUERY @@ -55,10 +76,13 @@ 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.” */ --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 @@ -66,26 +90,39 @@ if the product_qty_type is “unit,” and otherwise displays the word “bulk. 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. */ --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 product_name like '%pepper%' THEN 1 + ELSE 0 + END as pepper_flag +FROM product; --END QUERY - --JOIN /* 1. Write a query that INNER JOINs the vendor table to the vendor_booth_assignments table on the vendor_id field they both have in common, and sorts the result by market_date, then vendor_name. Limit to 24 rows of output. */ --QUERY 7 - - - - +SELECT +vendor_name +,vendor_type +,vendor_owner_first_name +,vendor_owner_last_name +,booth_number +,market_date +,vendor.vendor_id +,vendor_booth_assignments.vendor_id +FROM vendor +INNER JOIN vendor_booth_assignments + ON vendor.vendor_id = vendor_booth_assignments.vendor_id +ORDER by market_date, vendor_name +LIMIT 24; --END QUERY - - /* SECTION 3 */ -- AGGREGATE @@ -93,8 +130,12 @@ 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 +,COUNT(vendor_id) as rented_booth_count - +FROM vendor_booth_assignments +GROUP BY vendor_id; --END QUERY @@ -106,9 +147,18 @@ 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 +c.customer_first_name +,c.customer_last_name +,sum(cp.quantity*cp.cost_per_quantity) as total_spent +FROM customer_purchases as cp +INNER JOIN customer as c + ON c.customer_id = cp.customer_id +GROUP by c.customer_first_name, c.customer_last_name - +HAVING total_spent > 2000 +ORDER by c.customer_last_name, c.customer_first_name; --END QUERY @@ -124,10 +174,17 @@ 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 +vendor_id, +vendor_name, +vendor_type, +vendor_owner_first_name, +vendor_owner_last_name +FROM vendor; +INSERT INTO new_vendor (vendor_id, vendor_name, vendor_type, vendor_owner_first_name, vendor_owner_last_name) +VALUES(10,'Thomass Superfood Store', 'a Fresh Focused store', 'Thomas', 'Rosenthal'); --END QUERY @@ -138,10 +195,12 @@ HINT: you might need to search for strfrtime modifers sqlite on the web to know and year are! Limit to 25 rows of output. */ --QUERY 11 - - - - +SELECT +customer_id +,strftime('%m', market_date) AS month +,strftime('%Y', market_date) AS year +from customer_purchases +LIMIT 25; --END QUERY @@ -152,8 +211,15 @@ HINTS: you will need to AGGREGATE, GROUP BY, and filter... 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 +,strftime('%m', market_date) AS month +,strftime('%Y', market_date) AS year +,sum(quantity*cost_per_quantity) as money_spent +from customer_purchases + +WHERE month = '04' + AND year = '2022' +GROUP by customer_id, month, year; --END QUERY diff --git a/02_activities/assignments/Microcredential_Cohort/assignment_1_1.png b/02_activities/assignments/Microcredential_Cohort/assignment_1_1.png new file mode 100644 index 000000000..7ea3041af Binary files /dev/null and b/02_activities/assignments/Microcredential_Cohort/assignment_1_1.png differ