[英]Update index to be a gin index
In my rails app I have table with indexes that looks like this: 在我的rails应用程序中,我的表带有如下所示的索引:
create_table "people", force: :cascade do |t|
t.datetime "created_at", null: false
t.datetime "updated_at", null: false
t.string "first_name", limit: 255
t.string "last_name", limit: 255
t.string "middle_name", limit: 255
t.index name: "people_lowercase_full_names_gist_ops_idx", using: :gist, expression: "lower((((COALESCE(first_name, ''::character varying))::text || (COALESCE(middle_name, ''::character varying))::text) || (COALESCE(last_name, ''::character varying))::text))"
t.index name: "people_lowercase_full_names_text_pattern_ops_idx", expression: "lower((((COALESCE(first_name, ''::character varying))::text || (COALESCE(middle_name, ''::character varying))::text) || (COALESCE(last_name, ''::character varying))::text))"
end
How can I update those indexes to be a gin indexes? 如何将那些索引更新为杜松子酒索引?
you cannot change the index type. 您不能更改索引类型。 changing the index type can only be done by drop / create.
更改索引类型只能通过放置/创建来完成。 it requires a total rebuild.
它需要完全重建。 this will never be possible actually.
实际上这将永远不可能。
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