assignment-one

02_activities/assignments/Microcredential_Cohort/assignment1.sql

@@ -7,7 +7,7 @@
 /* 1. Write a query that returns everything in the customer table. */
 --QUERY 1
 
-
+SELECT * FROM customer;
 
 
 --END QUERY
@@ -17,7 +17,10 @@
 sorted by customer_last_name, then customer_first_ name. */
 --QUERY 2
 
-
+SELECT *
+FROM customer
+ORDER BY customer_last_name, customer_first_name
+LIMIT 10;
 
 
 --END QUERY
@@ -28,7 +31,10 @@ 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 +49,12 @@ Limit to 25 rows of output.
 */
 --QUERY 4
 
-
+SELECT *,
+       quantity * cost_per_quantity AS price
+FROM customer_purchases
+WHERE customer_id >= 8
+  AND customer_id <= 10
+LIMIT 25;
 
 
 --END QUERY
@@ -56,7 +67,13 @@ 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
@@ -67,7 +84,17 @@ 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;
 
 
 --END QUERY
@@ -79,7 +106,12 @@ 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 v
+INNER JOIN vendor_booth_assignments v_b
+    ON v.vendor_id = v_b.vendor_id
+ORDER BY v_b.market_date, v.vendor_name
+LIMIT 24;
 
 
 --END QUERY
@@ -93,7 +125,12 @@ 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(*) AS booth_assignment_times
+FROM vendor_booth_assignments
+GROUP BY vendor_id
+ORDER BY booth_assignment_times DESC;
 
 
 --END QUERY
@@ -106,8 +143,22 @@ 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_id,
+    c.customer_first_name,
+    c.customer_last_name,
+    SUM(cp.quantity * cp.cost_per_quantity) AS total_spent
+FROM customer c
+INNER JOIN customer_purchases cp
+    ON c.customer_id = cp.customer_id
+GROUP BY
+    c.customer_id,
+    c.customer_first_name,
+    c.customer_last_name
+HAVING SUM(cp.quantity * cp.cost_per_quantity) > 2000
+ORDER BY
+    c.customer_last_name,
+    c.customer_first_name;
 
 --END QUERY
 
@@ -121,12 +172,30 @@ When inserting the new vendor, you need to appropriately align the columns to be
 (there are five columns to be inserted, I've given you the details, but not the syntax) 
 
 -> To insert the new row use VALUES, specifying the value you want for each column:
-VALUES(col1,col2,col3,col4,col5) 
-*/
---QUERY 10
-
+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'
+);
 
 --END QUERY
 
@@ -139,7 +208,12 @@ 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
@@ -153,7 +227,12 @@ 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_per_quantity) AS total_spent_april_2022
+FROM customer_purchases
+WHERE strftime('%Y-%m', market_date) = '2022-04'
+GROUP BY customer_id;
 
 
 --END QUERY

04_this_cohort/live_code/module_2/SELECT.sql

@@ -30,4 +30,5 @@ SELECT 2026 as this_year, 'July' as this_month, customer_id
 FROM customer
 
 
+
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