Filed query drop down

Hi, :laugh:
i have two question:
1 - where is the tutorial or video tutorial for to create the field query drop down (multi selection)

2 - It's possible to have a field query drop down with auto compilation (similar google search when we search a word) because i have a table mysql with 200/300 word and it would be too long.
i attechmet the file

Thanks in advance for your anwser

1 - where is the tutorial or video tutorial for to create the field query drop down (multi selection)

www.joomlapolis.com/support/tutorials/107-use-cases/18377-configuring-a-country-field-with-cb-query-field-plugin

www.youtube.com/playlist?list=PLp0puRITgC7MM9iP9FooKB1qk8f5MLWVp

2 - It's possible to have a field query drop down with auto compilation (similar google search when we search a word) because i have a table mysql with 200/300 word and it would be too long.

We do not have such a fieldtype at this time.