2
を使用してインデックスを作成し、私はGIN
とGiST
の両方を使用して索引を作成することができるよ:のPostgres:構文エラー<a href="http://www.postgresql.org/docs/9.4/static/pgtrgm.html" rel="nofollow">Postgres trgm docs</a>の指示に従いPRGM GIN
home_accounting_dev=# \d+ test_trgm
Table "public.test_trgm"
Column | Type | Modifiers | Storage | Stats target | Description
--------+------+-----------+----------+--------------+-------------
t | text | | extended | |
Indexes:
"trgm_idx" gist (t gist_trgm_ops)
"trgm_idx_2" gin (t gin_trgm_ops)
Has OIDs: no
を...しかし、私はそうするように見えることはできません既存のテーブル "支出"、列 "desc"にある。
home_accounting_dev=# \d+ expenditures
Table "public.expenditures"
Column | Type | Modifiers | Storage | Stats target | Description
-------------+-----------------------------+-----------------------------------------------------------+----------+--------------+-------------
id | integer | not null default nextval('expenditures_id_seq'::regclass) | plain | |
desc | text | | extended | |
amount | character varying(255) | | extended | |
inserted_at | timestamp without time zone | not null | plain | |
updated_at | timestamp without time zone | not null | plain | |
expent_at | date | | plain | |
Indexes:
"expenditures_pkey" PRIMARY KEY, btree (id)
Referenced by:
TABLE "expenditures_taggings" CONSTRAINT "expenditures_taggings_assoc_id_fkey" FOREIGN KEY (assoc_id) REFERENCES expenditures(id)
Has OIDs: no
列は、この例とまったく同じタイプと特性テーブルtest_trgmの「T」の欄ですが、私は、インデックスを作成しようとすると、それは構文エラーがスローされます。
home_accounting_dev=# CREATE INDEX asdf_qwer ON expenditures USING gin (desc gin_trgm_ops);
ERROR: syntax error at or near "desc"
LINE 1: CREATE INDEX asdf_qwer ON expenditures USING gin (desc gin_t...
それは、
home_accounting_dev=# CREATE INDEX asdf_qwer ON expenditures USING gin (dec gin_trgm_ops);
ERROR: column "dec" does not exist