There's one field called 'table_name' of which format is like 't_data_quality', 't_data_security'.
Its mapping is
And its analyzing results is
We can see the results contain the token 't_data_quality', but whenI use completion suggester like this, it returns nothing.
And when I modify the analyzer in mapping from 'ik_max_word' to 'ik_smart' or 'standard' or 'english' (the analyze results are same, it will produce one token alone, which is 't_data_quality'), it can suggest when input the text like 't_' or 't_da' or 't_data'.
I'm so confused. Any advice or idea would be helpful. Thanks in advance!