How to fix ORA-00923: FROM keyword not found where

ora 923 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. Learn the cause and how to resolve the ORA-00923 error message in Oracle. You tried to execute a SELECT statement, and you either missed or misplaced the FROM keyword.

orangtua slot, ORA-00923: FROM keyword not found where expected Below is the SQL : SELECT A.Agent_key, Sum(Total_Orders) FROM (SELECT A.Agent_key, Sum(Total_Orders).