diff --git a/legacy-sql/count.sql b/legacy-sql/count.sql
new file mode 100644
index 0000000..db6cb07
--- /dev/null
+++ b/legacy-sql/count.sql
@@ -0,0 +1,23 @@
+USE loff;
+
+SHOW TABLES;
+
+SELECT table_schema "Full database",
+    CONCAT(
+        ROUND(
+            SUM(data_length + index_length)
+        / 1024 / 1024, 1),
+    " MB") "dbsize"
+FROM information_schema.tables
+WHERE table_schema = "loff"
+GROUP BY table_schema
+
+UNION
+
+SELECT "Rows in 'product' table", COUNT(*)
+FROM product
+
+UNION
+
+SELECT "Rows in 'category' table", COUNT(*)
+FROM category;
diff --git a/legacy-sql/insert-category.sql b/legacy-sql/insert-category.sql
new file mode 100644
index 0000000..0af36c0
--- /dev/null
+++ b/legacy-sql/insert-category.sql
@@ -0,0 +1,19 @@
+USE loff;
+
+INSERT INTO category (name) VALUES ('biscuits');
+
+INSERT INTO product (code, url, name, nutrition_grades, category_id)
+SELECT
+    '8480000141323',
+    'https://fr-en.openfoodfacts.org/product/8480000141323/galletas-maria-dorada-hacendado',
+    'Galletas María Dorada Hacendado',
+    'd',
+    id AS category_id
+FROM category
+WHERE name = 'biscuits';
+
+INSERT INTO product (code, name, nutrition_grades, category_id, url)
+VALUES ('3593551174971', 'Les Broyés du Poitou', 'e', 1, 'https://fr-en.openfoodfacts.org/product/3593551174971/les-broyes-du-poitou-les-mousquetaires'),
+       ('2000000052047', 'Palets solognots', 'e', 1, 'https://fr-en.openfoodfacts.org/product/2000000052047/palets-solognots-biscuiterie-de-chambord'),
+       ('3175681771772', 'Moelleux POMME FRAMBOISE', 'c', 1, 'https://fr-en.openfoodfacts.org/product/3175681771772/moelleux-pomme-framboise-gerble'),
+       ('26035642', 'Cookies nougatine + pépites de chocolat', 'e', 1, 'https://fr-en.openfoodfacts.org/product/26035642/cookies-nougatine-pepites-de-chocolat-arizona')