sql - ORA-00936: missing expression oracle -

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i have query

select dal_rownotable.dal_id  (     select ticket.id "dal_id",  rownumber ( order ticket.id  )  "dal_rownumber"      ticket_table ticket      ( ticket.type = n'i' )      ,      (          ticket.tenant null or ticket.tenant in          (             select  *              (                  select tenant_group_member.tenant_id                  tenant_group_member                  tenant_group_member.tenant_group = hextoraw('30b0716feb5f4e4bb82a7b7aa3a1a42c')                  order ticket.id              )           )       ) ) dal_rownotable  dal_rownotable.dal_rownumber between 1 , 21

what problem allow query throwing ora-00936 missing expression? anyone? appreciated...error thrown @ column:80 @ beginning of first order by:

your query can simplified. has things layers of subqueries , unnecessary order by in in subquery. want rownumber can rownum:

select dal_rownotable.dal_id (select ticket.id "dal_id"        ticket_table ticket        (ticket.type = n'i' ) ,              (ticket.tenant null or              ticket.tenant in (select tgm.tenant_id                                 tenant_group_member tgm                                tgm.tenant_group = hextoraw('30b0716feb5f4e4bb82a7b7aa3a1a42c')                                )              )       order ticket.id      ) dal_rownotable  rownum <= 21;

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