cleanup root directory (#996)

_database/sql/migrations_squashed/entity_stats.sql

@@ -0,0 +1,56 @@
+-- noinspection SqlDialectInspectionForFile
+-- noinspection SqlNoDataSourceInspectionForFile
+-- noinspection SqlResolveForFile
+
+-- Statistics about any entity. Typically model weights and media files.
+CREATE TABLE entity_stats (
+  -- Not used for anything except replication.
+  id BIGINT(20) NOT NULL AUTO_INCREMENT,
+
+  -- ========== ENTITY LINKAGE ==========
+
+  -- The type of record this is attached to
+  -- Currently supported values:
+  --   * 'model_weight'
+  --   * 'media_file'
+  --   * 'comment'
+  entity_type VARCHAR(32) NOT NULL,
+
+  -- The token for the record.
+  entity_token VARCHAR(32) NOT NULL,
+
+  -- ========== MODEL DESCRIPTION ==========
+
+
+  -- Total positive ratings
+  -- Total overall ratings = positive + negative
+  ratings_positive_count INT(10) UNSIGNED NOT NULL DEFAULT 0,
+
+  -- Total negative ratings
+  -- Total overall ratings = positive + negative
+  ratings_negative_count INT(10) UNSIGNED NOT NULL DEFAULT 0,
+
+  -- Total number of user bookmarks
+  bookmark_count INT(10) UNSIGNED NOT NULL DEFAULT 0,
+
+  -- Total number of views
+  -- view_count INT(10) UNSIGNED NOT NULL DEFAULT 0,
+
+  -- Total number of views
+  -- play_count INT(10) UNSIGNED NOT NULL DEFAULT 0,
+
+  -- ========== TIMESTAMPS ==========
+
+  created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
+
+  -- When the cached ratings were last calculated and updated.
+  -- maybe_last_backfilled_at TIMESTAMP DEFAULT NULL,
+
+    -- INDICES --
+  PRIMARY KEY (id),
+  UNIQUE KEY (entity_type, entity_token),
+  KEY index_entity_type (entity_type),
+  KEY index_entity_token (entity_token)
+
+) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_bin;