From 7db05e5092dad722f73c10d17074f0084be49fb6 Mon Sep 17 00:00:00 2001
From: Alexa Grey <alexa@castironcoding.com>
Date: Fri, 6 Dec 2024 09:59:18 -0800
Subject: [PATCH] [C] Remove unused indices

These indices are huge and not getting used by the query planner.
---
 ...remove_unused_text_section_node_indices.rb | 17 +++++++++++++
 api/db/structure.sql                          | 24 ++-----------------
 2 files changed, 19 insertions(+), 22 deletions(-)
 create mode 100644 api/db/migrate/20241206175512_remove_unused_text_section_node_indices.rb

diff --git a/api/db/migrate/20241206175512_remove_unused_text_section_node_indices.rb b/api/db/migrate/20241206175512_remove_unused_text_section_node_indices.rb
new file mode 100644
index 0000000000..d956545e90
--- /dev/null
+++ b/api/db/migrate/20241206175512_remove_unused_text_section_node_indices.rb
@@ -0,0 +1,17 @@
+# frozen_string_literal: true
+
+class RemoveUnusedTextSectionNodeIndices < ActiveRecord::Migration[6.1]
+  def up
+    execute <<~SQL
+    DROP INDEX IF EXISTS index_text_section_nodes_pairing;
+
+    DROP INDEX IF EXISTS index_text_section_nodes_on_node_path;
+
+    DROP INDEX IF EXISTS index_text_section_nodes_by_id_and_hash;
+    SQL
+  end
+
+  def down
+    # Intentionally left blank. We won't add these indices back.
+  end
+end
diff --git a/api/db/structure.sql b/api/db/structure.sql
index ac80d3bb7f..51370ead1a 100644
--- a/api/db/structure.sql
+++ b/api/db/structure.sql
@@ -5576,13 +5576,6 @@ CREATE UNIQUE INDEX index_text_exports_uniqueness ON public.text_exports USING b
 CREATE INDEX index_text_section_nodes_actual_ancestors ON public.text_section_nodes USING gist (node_path) WHERE (NOT intermediate);
 
 
---
--- Name: index_text_section_nodes_by_id_and_hash; Type: INDEX; Schema: public; Owner: -
---
-
-CREATE INDEX index_text_section_nodes_by_id_and_hash ON public.text_section_nodes USING btree (text_section_id, body_hash);
-
-
 --
 -- Name: index_text_section_nodes_by_uuid; Type: INDEX; Schema: public; Owner: -
 --
@@ -5604,13 +5597,6 @@ CREATE INDEX index_text_section_nodes_child_ordering ON public.text_section_node
 CREATE INDEX index_text_section_nodes_extrapolation ON public.text_section_nodes USING btree (text_section_id, extrapolated_at);
 
 
---
--- Name: index_text_section_nodes_on_node_path; Type: INDEX; Schema: public; Owner: -
---
-
-CREATE INDEX index_text_section_nodes_on_node_path ON public.text_section_nodes USING gist (node_path);
-
-
 --
 -- Name: index_text_section_nodes_on_text_section_id; Type: INDEX; Schema: public; Owner: -
 --
@@ -5618,13 +5604,6 @@ CREATE INDEX index_text_section_nodes_on_node_path ON public.text_section_nodes
 CREATE INDEX index_text_section_nodes_on_text_section_id ON public.text_section_nodes USING btree (text_section_id);
 
 
---
--- Name: index_text_section_nodes_pairing; Type: INDEX; Schema: public; Owner: -
---
-
-CREATE INDEX index_text_section_nodes_pairing ON public.text_section_nodes USING btree (node_path) INCLUDE (path);
-
-
 --
 -- Name: index_text_section_nodes_uniqueness; Type: INDEX; Schema: public; Owner: -
 --
@@ -7194,6 +7173,7 @@ INSERT INTO "schema_migrations" (version) VALUES
 ('20231129172116'),
 ('20240220212417'),
 ('20240223163849'),
-('20240327194259');
+('20240327194259'),
+('20241206175512');