Join 3 table is giving an error - mysql

Question

i have 3 tables.
tenant
tenant_id : int
category_id : int
category
category_id : int
category_name : varchar(50)
history
tenant_id : int
bulan_tahun : varchar(8)
counter : int
i want to join all of this table using this code:
SELECT a.tenant_id, a.category_name
FROM (
(tenant INNER JOIN category ON tenant.category_id = category.category_id) AS a
INNER JOIN (
SELECT tenant_id, counter FROM history WHERE
bulan_tahun = DATE_FORMAT(CURDATE(), '%m_%Y')
) AS b
on a.tenant_id = b.tenant_id
)
but this code produce an error:
#1064 - You have an error in your SQL syntax; check the manual that corresponds to your MySQL server version for the right syntax to use near 'a INNER JOIN ( SELECT tenant_id, counter FROM history WHERE bulan_tahun ' at line 3
if i separate the sub select, it works perfectly
for the first select:
SELECT tenant_id, category_name
FROM
(tenant INNER JOIN category ON tenant.category_id = category.category_id)
and the second select:
SELECT tenant_id, counter FROM history WHERE
bulan_tahun = DATE_FORMAT(CURDATE(), '%m_%Y')
but if i join this together, the error occured
can anyone help me?

Answer 1

Problem lies here..
(tenant INNER JOIN category ON tenant.category_id = category.category_id)
Try restructuring your entire query like this
SELECT a.tenant_id, c.category_name
FROM
tenant t
INNER JOIN
category c
ON ( t.category_id = c.category_id )
INNER JOIN
history h
ON ( t.tenant_id = h.tenant_id )
WHERE
h.bulan_tahun = DATE_FORMAT(CURDATE(), '%m_%Y')