OCI-01747
        invalid column specification: column_name
        - column_name: The column name that is specified improperly.
        Cause
        A column name is specified improperly in the current SQL statement.
        Action
        Check the syntax of the statement, and ensure that:
- Any column names that are reserved words are surrounded by double quotation characters.
- All column names are specified correctly.
- There are no dangling commas.
Then retry the statement.
        
     
    
    
        OCI-01747
        invalid user.table.column, table.column, or column specification
        
        
        Cause
        A column name was specified improperly in the current SQL statement.
        Action
        Check the statement's syntax, especially references to column names, and retry the statement.
        
     
    
    
        OCI-01747
        invalid user.table.column, table.column, or column specification
        
        
        Cause
        A column name was specified improperly in the current SQL statement.
        Action
        Check the statement's syntax, especially references to column names, and retry the statement.