"Every derived table must have its own alias" Error in SQL - mysql

Question

I have a following SQL query and I'm getting an error "Every derived table must have its own alias.could any one please help me to solve this?
SELECT
c.clientID_PK,
c.clientName,
d1.draftCount,
d2.purchaseOrderValue,
d2.averageValue
FROM client c
LEFT JOIN
(select
COUNT(DISTINCT d.draftID_PK) as draftCount
from draft d
where d.draftDate between NOW() - INTERVAL 90 DAY and NOW())
)d1 ON TRUE
LEFT JOIN
(
SELECT
ROUND(sum(p.total_finalValue),2) as purchaseOrderValue
ROUND((p.poValue / 12),2) as averageValue
FROM paymentengine_data p
WHERE p.poDate between NOW() - INTERVAL 90 DAY and NOW()
)d2 ON TRUE
WHERE c.typeID_FK = 1 AND c.stateID_FK = 2 AND c.statusID_FK = 2
AND d1.clientID_FK = c.clientID_PK AND d2.purchaserID_FK = c.clientID_PK
GROUP BY c.clientID_PK

Answer 1

Your first LEFT JOIN has an extra closing brace and that is causing the error.
Change:
LEFT JOIN
(select
COUNT(DISTINCT d.draftID_PK) as draftCount
from draft d
where d.draftDate between NOW() - INTERVAL 90 DAY and NOW()) -- <-- xtra )
)d1 ON TRUE
To:
LEFT JOIN
(select
COUNT(DISTINCT d.draftID_PK) as draftCount
from draft d
where d.draftDate between NOW() - INTERVAL 90 DAY and NOW()
)d1 ON TRUE

Answer 2

Here is a query that might actually work:
SELECT c.clientID_PK, c.clientName,
d1.draftCount, d2.purchaseOrderValue, d2.averageValue
FROM client c left join
(select clientID_FK, COUNT(DISTINCT d.draftID_PK)as draftCount
from draft d
where d.draftDate between NOW() - INTERVAL 90 DAY and NOW()
group by clientID_FK
) d1
on d1.clientID_FK = c.clientID_PK LEFT JOIN
(SELECT purchaserID_FK, ROUND(sum(p.total_finalValue),2) as purchaseOrderValue
ROUND((p.poValue / 12),2) as averageValue
FROM paymentengine_data p
WHERE p.poDate between NOW() - INTERVAL 90 DAY and NOW()
GROUP BY purchaserID_FK
) d2
ON d2.purchaserID_FK = c.clientID_PK
WHERE c.typeID_FK = 1 AND c.stateID_FK = 2 AND c.statusID_FK = 2;
Here are some additional changes (besides the extra closing paren):
The first subquery groups by clientID_FK and includes the column in the select.
The on condition has been moved from the where to the on.
The second subquery groups by purchaserID_FK and includes the column in the select.
The on condition has been moved from the where clause to the on.
The outer group by has been removed. Presumably, the primary key is unique on the client table.