Unknown column in where clause when nested selection - mysql

Question

I have to get results from different tables in one query. But got the unknown column error.
SET sql_mode = '';
SELECT
e_mills.m_id,
e_mills.mill_name,
e_cities.city_name,
e_sugardata.mill_closing_stock,
(
SELECT GROUP_CONCAT(mill_closing_stock SEPARATOR ', ')
FROM (
SELECT mill_closing_stock
FROM `e_sugardata`
WHERE m_id = e_mills.m_id
GROUP BY date_added
ORDER BY date_added DESC
LIMIT 0,4
) AS mill_closing_stock
) AS stock_chart
FROM e_mills
INNER JOIN e_cities
ON e_mills.city_id = e_cities.city_id
INNER JOIN e_sugardata
ON e_sugardata.m_id = e_mills.m_id
ORDER BY e_mills.province_id
ERROR
#1054 - Unknown column 'e_mills.m_id' in 'where clause'
UPDATE
Same query is working on my computer but not on other computer
UPDATE 2 working on MySQL 8
MySQL 8 DB Fiddle

Answer 1

To avoid an error in MySQL 5.7, you need to get rid of the nested query with a limit. Instead of a LIMIT clause, you can use the SUBSTRING_INDEX function. Also, the GROUP BY clause is unnecessary, especially since it does not work without changing sql_mode if the column list of the SELECT clause does not match the GROUP BY list.
-- SET sql_mode = ''; -- no more needed.
SELECT
e_mills.m_id,
e_mills.mill_name,
e_cities.city_name,
e_sugardata.mill_closing_stock,
(
SELECT
SUBSTRING_INDEX(
GROUP_CONCAT(mill_closing_stock ORDER BY date_added DESC SEPARATOR ', '
), ', ', 4
)
FROM `e_sugardata`
WHERE m_id = e_mills.m_id
) AS stock_chart
FROM e_mills
INNER JOIN e_cities
ON e_mills.city_id = e_cities.city_id
INNER JOIN e_sugardata
ON e_sugardata.m_id = e_mills.m_id
ORDER BY e_mills.province_id
db<>fiddle: MySQL 5.7 and MySQL 8