feat(catalog): 新增分类推荐榜快照接口

sql/schema-phase1.sql

@@ -873,26 +873,33 @@ COMMENT ON TABLE audit_log IS '业务对象变更审计（支付、权益、定
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 CREATE TABLE IF NOT EXISTS drama_classification (
-  id         BIGINT PRIMARY KEY,
-  name       VARCHAR(64) NOT NULL,
-  sort       INTEGER     NOT NULL DEFAULT 0,
-  status     SMALLINT    NOT NULL DEFAULT 1,
-  created_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
-  updated_at TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP
+  id          BIGINT PRIMARY KEY,
+  name        VARCHAR(64) NOT NULL,
+  code        VARCHAR(64),
+  layout_type VARCHAR(16) NOT NULL DEFAULT 'GRID',
+  revision    BIGINT      NOT NULL DEFAULT 1,
+  sort        INTEGER     NOT NULL DEFAULT 0,
+  status      SMALLINT    NOT NULL DEFAULT 1,
+  created_at  TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP,
+  updated_at  TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 CREATE UNIQUE INDEX IF NOT EXISTS uk_drama_classification_name ON drama_classification (name);
+CREATE UNIQUE INDEX IF NOT EXISTS uk_drama_classification_code ON drama_classification (code);
 COMMENT ON TABLE drama_classification IS '运营分类；与短剧类型(drama_category)相互独立';
 
 CREATE TABLE IF NOT EXISTS drama_classification_drama (
   id                BIGINT PRIMARY KEY,
   classification_id BIGINT NOT NULL,
   drama_id          BIGINT NOT NULL,
+  position          INTEGER NOT NULL DEFAULT 0,
   created_at        TIMESTAMP(3) NOT NULL DEFAULT CURRENT_TIMESTAMP
 );
 CREATE UNIQUE INDEX IF NOT EXISTS uk_classification_drama
   ON drama_classification_drama (classification_id, drama_id);
 CREATE INDEX IF NOT EXISTS idx_classification_drama_drama
   ON drama_classification_drama (drama_id);
+CREATE INDEX IF NOT EXISTS idx_classification_drama_position
+  ON drama_classification_drama (classification_id, position, id);
 COMMENT ON TABLE drama_classification_drama IS '分类与短剧的关联关系';
 
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