Assignment-one

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, customer_first_name
+LIMIT 10;
 
 
 --END QUERY
@@ -28,7 +32,11 @@ sorted by customer_last_name, then customer_first_ name. */
 Limit to 25 rows of output. */
 --QUERY 3
 
-
+SELECT *
+FROM customer_purchases
+WHERE product_id = 4
+   OR product_id = 9
+LIMIT 25;
 
 
 --END QUERY
@@ -43,9 +51,11 @@ Limit to 25 rows of output.
 */
 --QUERY 4
 
-
-
-
+SELECT *,
+       quantity * cost_per_quantity AS price
+FROM customer_purchases
+WHERE customer_id BETWEEN 8 AND 10
+LIMIT 25;
 --END QUERY
 
 
@@ -56,7 +66,13 @@ 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
@@ -67,6 +83,17 @@ 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;
 
 
 
@@ -79,6 +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 AS v
+INNER JOIN vendor_booth_assignments AS vba
+    ON v.vendor_id = vba.vendor_id
+ORDER BY vba.market_date, v.vendor_name
+LIMIT 24;
 
 
 
@@ -93,7 +126,11 @@ 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_rental_count
+FROM vendor_booth_assignments
+GROUP BY vendor_id
+ORDER BY vendor_id;
 
 
 --END QUERY
@@ -106,7 +143,19 @@ 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 AS c
+INNER 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 SUM(cp.quantity * cp.cost_per_quantity) > 2000
+ORDER BY c.customer_last_name,
+         c.customer_first_name;
 
 
 --END QUERY
@@ -125,6 +174,28 @@ VALUES(col1,col2,col3,col4,col5)
 */
 --QUERY 10
 
+DROP TABLE IF EXISTS temp.new_vendor;
+
+CREATE TEMP TABLE new_vendor AS
+SELECT *
+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',
+    'Fresh Focused',
+    'Thomas',
+    'Rosenthal'
+);
+
+
 
 
 
@@ -139,7 +210,11 @@ 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 +228,13 @@ 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
+FROM customer_purchases
+WHERE strftime('%m', market_date) = '04'
+  AND strftime('%Y', market_date) = '2022'
+GROUP BY customer_id
+ORDER BY customer_id;
 
 
 --END QUERY

04_this_cohort/live_code/module2_personal.sql

@@ -0,0 +1,31 @@
+/* MODULE 2 */
+/* SELECT */
+
+
+/* 1. Select everything in the customer table */
+SELECT * FROM customer;
+
+/* 2. Use sql as a calculator */
+SELECT 1+1 AS addition,
+10*5 AS multiplacation, pi() as pi;
+
+
+/* 3. Add order by and limit clauses */
+SELECT * FROM customer
+ORDER BY customer_first_name DESC
+LIMIT 10;
+
+
+/* 4. Select multiple specific columns */
+SELECT
+customer_first_name, 
+customer_last_name,
+customer_postal_code
+
+FROM customer;
+
+/* 5. Add a static value in a column */
+SELECT 2026 as this_year, 'July' as this_month, customer_id
+FROM customer
+
+--------------------------------------------------------------------------------------------------------------------------------------------