merch extra data

merch.sql

@@ -35,4 +35,20 @@ CREATE TABLE merch_prices (
     origin_id INT NOT NULL,
 
     CONSTRAINT fk_merch_prices_merch_origins_id FOREIGN KEY (origin_id) REFERENCES merch_origins(id) ON DELETE CASCADE
-);
+);
+
+CREATE TABLE merch_extra_data (
+    id BIGSERIAL PRIMARY KEY,
+    created_at TIMESTAMP WITH TIME ZONE NOT NULL,
+    updated_at TIMESTAMP WITH TIME ZONE NULL,
+    deleted_at TIMESTAMP WITH TIME ZONE NULL,
+    merch_id BIGINT NOT NULL,
+    origin_id BIGINT NOT NULL,
+    url TEXT DEFAULT NULL,
+
+    CONSTRAINT fk_merch_extra_data_merch_id FOREIGN KEY (merch_id) REFERENCES merch(id) ON DELETE CASCADE,
+    CONSTRAINT fk_merch_extra_data_merch_origins_id FOREIGN KEY (origin_id) REFERENCES merch_origins(id) ON DELETE CASCADE
+
+);
+
+CREATE INDEX idx_merch_extra_data_merch_id ON merch_extra_data(merch_id);