FAQ: Advanced Aggregates - Meal Sums

Frequently Asked Questions SQL FAQ
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This community-built FAQ covers the “Meal Sums” exercise from the lesson “Advanced Aggregates”.

Paths and Courses
This exercise can be found in the following Codecademy content:

SQL: Analyzing Business Metrics

FAQs on the exercise Meal Sums

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Assuming I would like to calcute the share of kale purchases to total purchases for each day - is there a way to simplify my code below? I was stuck getting a second column for the conditional sum for the kale smoothies purchased - is there a way to display these 3 (or 4 if we want the share too) colums: date, sum total, sum kale smoothie without having to create a temporary table? Thanks in advance!!

WITH total AS(
SELECT date (ordered_at) AS ‘date_total’, SUM(amount_paid) AS ‘paid_total’
FROM orders
LEFT JOIN order_items
ON orders.id =order_items.order_id
GROUP BY 1
),
kale AS (
SElECT date(ordered_at) AS ‘date_kale’, SUM(amount_paid) AS ‘paid_kale’
FROM orders
LEFT JOIN order_items
ON orders.id =order_items.order_id
WHERE name = ‘kale-smoothie’
GROUP BY 1
)
SELECT date_total, paid_total, paid_kale, paid_kale/paid_total AS ‘ratio’
FROM total
LEFT JOIN kale
ON total.date_total = kale.date_kale;