Reproducer for https://github.com/graphile/crystal/issues/2564

graphile.config.ts

@@ -7,7 +7,7 @@ import { makePgSmartTagsFromFilePlugin } from "postgraphile/utils";
 import { PostGraphileConnectionFilterPreset } from "postgraphile-plugin-connection-filter";
 import { PgAggregatesPreset } from "@graphile/pg-aggregates";
 import { PgManyToManyPreset } from "@graphile-contrib/pg-many-to-many";
-// import { PgSimplifyInflectionPreset } from "@graphile/simplify-inflection";
+import { PgSimplifyInflectionPreset } from "@graphile/simplify-inflection";
 import PersistedPlugin from "@grafserv/persisted";
 import { PgOmitArchivedPlugin } from "@graphile-contrib/pg-omit-archived";
 import { dirname } from "path";
@@ -27,11 +27,15 @@ const preset: GraphileConfig.Preset = {
       /* Enter your V4 options here */
       graphiql: true,
       graphiqlRoute: "/",
+      simpleCollections: "only",
+      graphileBuildOptions: {
+        pgOmitListSuffix: true,
+      },
     }),
     PostGraphileConnectionFilterPreset,
     PgManyToManyPreset,
     PgAggregatesPreset,
-    // PgSimplifyInflectionPreset
+    PgSimplifyInflectionPreset,
   ],
   plugins: [PersistedPlugin.default, PgOmitArchivedPlugin, TagsFilePlugin],
   pgServices: [

schema.sql

@@ -1 +1,92 @@
--- Create your database schema here
+DROP SCHEMA IF EXISTS app_data CASCADE;
+
+CREATE SCHEMA app_data;
+
+CREATE TABLE app_data.versions (
+  id INTEGER NOT NULL
+);
+
+CREATE SEQUENCE app_data.versions_id_seq;
+
+CREATE TABLE app_data.objects (
+  id INTEGER NOT NULL,
+  version_id INTEGER NOT NULL,
+  name TEXT NOT NULL DEFAULT ''
+);
+
+CREATE TABLE app_data.object_states (
+  id INTEGER NOT NULL,
+  version_id INTEGER NOT NULL,
+  object_id INTEGER NOT NULL,
+  value INTEGER NULL DEFAULT NULL
+);
+
+ALTER TABLE ONLY app_data.versions
+  ADD CONSTRAINT "pkey_versions" PRIMARY KEY (id);
+ALTER TABLE ONLY app_data.objects
+  ADD CONSTRAINT "pkey_objects" PRIMARY KEY (id, version_id);
+CREATE INDEX "idx_objects_version_id" ON app_data.objects (version_id, id);
+ALTER TABLE ONLY app_data.object_states
+  ADD CONSTRAINT "pkey_object_states" PRIMARY KEY (id, version_id);
+CREATE INDEX "idx_object_states_version_id" ON app_data.object_states (version_id, id);
+
+ALTER TABLE ONLY app_data.objects
+  ADD CONSTRAINT "fkey_objects_version_id" FOREIGN KEY (version_id) REFERENCES app_data.versions (id) DEFERRABLE INITIALLY DEFERRED;
+ALTER TABLE ONLY app_data.object_states
+  ADD CONSTRAINT "fkey_object_states_version_id" FOREIGN KEY (version_id) REFERENCES app_data.versions (id) DEFERRABLE INITIALLY DEFERRED;
+
+-- Default schema for Postgraphile follows
+
+CREATE VIEW objects AS
+WITH results AS MATERIALIZED (
+  SELECT
+    *
+  FROM (
+    SELECT DISTINCT ON (r.id)
+      r.*
+    FROM
+      app_data.objects r
+    WHERE
+      r.version_id > 0
+    ORDER BY
+      r.id,
+      r.version_id DESC
+  ) v
+) SELECT * FROM results;
+COMMENT ON VIEW objects IS $$
+@primaryKey id
+$$;
+
+CREATE VIEW object_states AS
+WITH results AS MATERIALIZED (
+  SELECT
+    *
+  FROM (
+    SELECT DISTINCT ON (r.id)
+      r.*
+    FROM
+      app_data.object_states r
+    WHERE
+      r.version_id > 0
+    ORDER BY
+      r.id,
+      r.version_id DESC
+  ) v
+) SELECT * FROM results;
+COMMENT ON VIEW object_states IS $$
+@primaryKey id
+@foreignKey (object_id) references objects (id)|@notNull|@fieldName object|@foreignFieldName states|The associated object.|
+$$;
+
+-- Generate sample data
+
+DO $$
+DECLARE
+  v_i INTEGER;
+BEGIN
+  FOR v_i IN 1..10000 LOOP
+    INSERT INTO app_data.versions (id) VALUES (v_i);
+    INSERT INTO app_data.objects (id, version_id) VALUES (v_i, v_i);
+    INSERT INTO app_data.object_states (id, version_id, object_id, value) VALUES (v_i, v_i, v_i, v_i);
+  END LOOP;
+END $$;