Autocomplete column names of table

1

Hi,

I tried to test sql auto-completion in demo site.
https://codemirror.net/mode/sql/index.html

There was predefined hintoptions.

hintOptions: {tables: {
      users: {name: null, score: null, birthDate: null},
      countries: {name: null, population: null, size: null}
    }}

But, I can see ‘users’, but i can not auto complete ‘name’, ‘score’, ‘birth’ columns.
Please help me!