MATLAB: Am I getting the error “Undefined function or method ‘fetch’ for input arguments of type ‘struct’.” when using the FETCH function in Database Toolbox R2010b

Question

I am running the following code:

conn=database('myDatabase','','');
curs=exec(conn,'myquery');
curs=fetch(curs);

and am getting the following error:

Undefined function or method 'fetch' for input arguments of type 'struct'.

Answer 1

This commonly happens because the result returned by the DATABASE function was not a valid database object. Check the message field returned by the database function to see why the connection failed:

conn=database('myDatabase','','');
conn.message