how to do union of the following two queries

Question

Am trying to do the union of the results of two queries. But I'm getting the following error: Error at Command Line:9 Column:81 Error report: SQL Error: ORA-00907: missing right parenthesis 00907. 00000 - "missing right parenthesis"

SELECT application_id, clicks, datee, client_id FROM(
(select 
    APPL_CD AS application_id, 
    count(*) as clicks, 
    to_date((to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy')), 'dd-mm-yyyy') as datee, 
    ALRT_RSPNS_FROM_CLIENT_ID AS client_id 
from  ALRT_PLATFORM_ALRT_HSTRY
    where  ACTN_TAKE_CD is not null 
    group by to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy'), APPL_CD, ALRT_RSPNS_FROM_CLIENT_ID order by datee) 
UNION ALL
(select 
    APPL_CD AS application_id, 
    count(*) as clicks, 
    to_date((to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy')), 'dd-mm-yyyy') as datee, 
    ALRT_RSPNS_FROM_CLIENT_ID AS client_id 
from  ALRT_PLATFORM_ALRT
    where  ACTN_TAKE_CD is not null 
    group by to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy'), APPL_CD, ALRT_RSPNS_FROM_CLIENT_ID order by datee )
)

Answer 1

Remove the ORDER BY from the nested queries:

SELECT application_id, clicks, datee, client_id FROM(
(select 
    APPL_CD AS application_id, 
    count(*) as clicks, 
    to_date((to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy')), 'dd-mm-yyyy') as datee, 
    ALRT_RSPNS_FROM_CLIENT_ID AS client_id 
from  ALRT_PLATFORM_ALRT_HSTRY
    where  ACTN_TAKE_CD is not null 
    group by to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy'), APPL_CD, ALRT_RSPNS_FROM_CLIENT_ID) 
UNION ALL
(select 
    APPL_CD AS application_id, 
    count(*) as clicks, 
    to_date((to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy')), 'dd-mm-yyyy') as datee, 
    ALRT_RSPNS_FROM_CLIENT_ID AS client_id 
from  ALRT_PLATFORM_ALRT
    where  ACTN_TAKE_CD is not null 
    group by to_char(ACTN_TAKE_DATA_TM, 'dd-mm-yyyy'), APPL_CD, ALRT_RSPNS_FROM_CLIENT_ID )
)

Answer 2

i think you miss right parenthesis at the very end of query