MySQL Recursive CTE table does not exist - mysql

Question

I'm learning about recursive functions, Since I need to extract a row for each day in a range of days. This is my current data
+----+------------+------------+
| id | from | to |
+----+------------+------------+
| 1 | 09-20-2019 | 09-25-2019 |
+----+------------+------------+
The goal is to receive my data as follows
+----+------------+
| id | date |
+----+------------+
| 1 | 09-20-2019 |
| 1 | 09-21-2019 |
| 1 | 09-22-2019 |
| 1 | 09-23-2019 |
| 1 | 09-24-2019 |
| 1 | 09-25-2019 |
+----+------------+
I'm following an example seen here: https://stackoverflow.com/a/54538866/1731057
But for some reason my recursive function is looking for the 'cte' table.
Query 1 ERROR: Table 'project.cte' doesn't exist
WITH cte AS (
SELECT date_from
FROM event_dates
UNION ALL
SELECT DATE_ADD(event_dates.date_from, INTERVAL 1 DAY)
FROM cte
WHERE DATE_ADD(event_dates.date_from, INTERVAL 1 DAY) <= event_dates.date_until
)
select * FROM cte;

Answer 1

The structure of your recursive CTE is off, and the upper half of the union should be a seed base case. Then, the recursive part should add one day to the previous incoming value:
WITH RECURSIVE cte (n, dt) AS (
SELECT 1, '2019-09-20'
UNION ALL
SELECT n + 1, TIMESTAMPADD(DAY, n, '2019-09-20') FROM cte WHERE n <= 5
)
SELECT * FROM cte;
Demo
Of note, we use TIMESTAMPADD() here to get around the problem of the INTERVAL expression, which can't really take a variable.
If you want to use this approach to generate a series of dates which matches the from and to values in your table, then you can try a join:
SELECT
t1.dt
FROM cte t1
INNER JOIN yourTable t2
ON t1.dt BETWEEN t2.from_date AND t2.to_date;
When used this way, the recursive CTE is acting as a calendar table.