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Improve tag search query (#16104)

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abcang 2021-04-25 13:33:28 +09:00 • committed by GitHub
parent daccc07dc1
commit 7f0c49c58a
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4 changed files with 35 additions and 10 deletions
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13
db/migrate/20210421121431_add_case_insensitive_btree_index_to_tags.rb Normal file
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@ -0,0 +1,13 @@
class AddCaseInsensitiveBtreeIndexToTags < ActiveRecord::Migration[5.2]
disable_ddl_transaction!
def up
safety_assured { execute 'CREATE UNIQUE INDEX CONCURRENTLY index_tags_on_name_lower_btree ON tags (lower(name) text_pattern_ops)' }
remove_index :tags, name: 'index_tags_on_name_lower'
end
def down
safety_assured { execute 'CREATE UNIQUE INDEX CONCURRENTLY index_tags_on_name_lower ON tags (lower(name))' }
remove_index :tags, name: 'index_tags_on_name_lower_btree'
end
end

4
db/schema.rb
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@ -10,7 +10,7 @@
#
# It's strongly recommended that you check this file into your version control system.
ActiveRecord::Schema.define(version: 2021_04_16_200740) do
ActiveRecord::Schema.define(version: 2021_04_21_121431) do
# These are extensions that must be enabled in order to support this database
enable_extension "plpgsql"
@ -862,7 +862,7 @@ ActiveRecord::Schema.define(version: 2021_04_16_200740) do
t.datetime "last_status_at"
t.float "max_score"
t.datetime "max_score_at"
t.index "lower((name)::text)", name: "index_tags_on_name_lower", unique: true
t.index "lower((name)::text) text_pattern_ops", name: "index_tags_on_name_lower_btree", unique: true
end
create_table "tombstones", force: :cascade do |t|