ORA-907 missing right parenthesis when using AS keyword [duplicate]

Answer 1

Your problem is the as. However, I think your query is intended to be a correlated subquery. This should be written as:

SELECT e.id, e.fk_easbware_id, e.mandant, e.reg_code_mc,   
       e.hazard_code_ident, e.add_hazard_code, e.haz_code_version,   
       e.undg_number, e.ship_flashpoint, e.flashpoint_type,   
       e.cont_dopc, e.cont_dop, e.cont_phone, e.verpack_grp_mc,   
       e.ems_nr, e.trem_card_nr, e.secondimo, e.thirdimo,
       (SELECT COUNT(*)
         FROM easbdgstn_t p ON 
         WHERE e.id = p.fk_easbwaredgsid AND
               p.type_mc = 'TRANSPORT_DGS_LIM_QUANT'
       ) AS cc_is_limited_quantities
FROM easbwaredgs_t e
WHERE e.mandant = '001' AND
      e.fk_easbware_id = 1;

Just to clarify: as is permitted (and desired) for column aliases. It is not allowed for table aliases in Oracle.

Answer 2

In oracle using as for a table alias is not valid.
Use only the alias without preceding it with as.

...) t

and not

...) as t