SQL Error: ORA-00923: FROM keyword not found where expected

ora 923 ORA-00923: FROM keyword not found where expected SQL: SELECT DISTINCT B10.EMPLID from PS_BEN_PROG_PARTIC a10, PS_EMPLOYEES b10,. I have been getting the error ORA-00923: FROM keyword not found where expected and do not know why, please help. Do check for missing spaces in the sql query. I ran into another

orang mati erek erek, What causes an ORA-00923 error? In a SELECT or REVOKE statement, the keyword FROM was either missing, misplaced, or misspelled. The keyword FROM must follow.