Is fulltext search not work when input query just One character? about pgroonga.github.io

[komainu8]

Thank you for your report.
However, I could not reproduce this problem in my environment.

create table contents ( id integer, content varchar );

CREATE INDEX test_index ON contents USING pgroonga (content pgroonga_varchar_full_text_search_ops_v2) WITH (tokenizer='TokenMecab');

insert into contents values (1, 'Test me please');

select * from contents;
 id |    content     
----+----------------
  1 | Test me please
(1 row)

SELECT content FROM contents where content &@ 'T';
    content     
----------------
 Test me please
(1 row)

Could you provide SQL to reproduce this case from scratch?
And could you teach me your PostgreSQL and PGroonga version?

Thank you for your reply @komainu8
I'm using
PGroonga 2.2.5
Groonga 10.0.2
MeCab 0.996 + IPADIC 2.7.0-20070801
PostgreSQL 9.6 / Alpine Linux

Seemlikes it's just occured when have more data.

Here is my full informations:

CREATE TABLE test_users (
    id BIGSERIAL PRIMARY KEY,
    display_name character varying(191)
);

index:

CREATE INDEX test_user_index ON test_users USING pgroonga (display_name pgroonga_varchar_full_text_search_ops_v2) WITH (tokenizer='TokenMecab');

data

id | display_name
-- | --
98 | HetGaHetSo
97 | usernamedainhatthegioiusernamedainhatthegioiusernamedainhatthegioiusernamedainhatthegioiusernamedain
96 | usernameTestHi
95 | abcd
94 | Ngan normal user
93 | a1a
92 | 1a
91 | aa
90 | aa
89 | ac
88 | ab
87 | Aa
86 | New
85 | あア
84 | ああ
83 | あか
82 | cuonga
81 | あキ
80 | あ
79 | Abc test
78 | Taka Admin user
77 | Taka normal user
76 | アカク
75 | アノス
74 | アスシ
73 | あ　あむ
72 | あ　アム
71 | THÁI_ĐẸP_TROAI_XUYÊN_LỤC_ĐỊA
70 | HÙNG_XÊNH_ĐẸP_CẤM_SỜ
69 | LONG_BÊ_ĐÊ
68 | TRANG_CHO_DIEN
67 | あ　かつ
66 | あ　カカ
65 | DUNG_HA_ADMIN
64 | CUONG NORMAL
63 | Chinh admin
62 | CUONG_ADMIN_DO_NOT_TOUCH
61 | abcd
60 | AAA
59 | ADSzfxgchvjb
58 | wefzsdrxfcghv
57 | CADMIN
56 | CNORMAL
55 | hand12
54 | hand1
53 | 100characters100characters100characters100characters100characters100characters100characters100charac
52 | c
51 | account_thai_test_1
50 | sjhjkahsfkj
49 | há há
48 | userName
47 | test
46 | fwfwfwf
45 | casascascas
44 | vvavdav
43 | asdasd
42 | ChinhTest
41 | Account11111
40 | Account333
39 | mottrammottrammottrammottrammottrammottrammottrammottrammottrammottrammottrammottrammottrammottrammo
38 | abc
37 | 姓姓姓姓姓
36 | ngan ngan
35 | 1
34 | Account12
33 | Account1
32 | Account5
31 | Accounttest
30 | account_name_thai_1
29 | Account
28 | Tien12345
27 | Tien1234
26 | Tien123
25 | wafesdfxg
24 | awesrdfgcwafes
23 | WFEG
22 | WFSDXGC
21 | awefsrfg
20 | fwaesrfe
19 | fdfwfea
18 | fwaesrf
17 | wefsrgvqwe
16 | awesr
15 | awesrdfg
14 | wefrdff
12 | AFESRFGC
11 | wafesrgd
4 | account1
3 | r_tanshor_tansho
2 | yukayuka1
1 | admin1admin1

Query::

select display_name FROM test_users where display_name &@ 'H';

I expect first row with data 98 | HetGaHetSo will be displayed.

It's really an urgent issue for me.
Hope that you can check it for me soon.
Really thank you so much!

I think it's same with this issue
pgroonga/pgroonga#130
But i have no idea with TokenMecab tokenizer

[kou]

This repository is for the PGroonga website not PGroonga itself.
Please use https://github.com/pgroonga/pgroonga instead.