Add publishing date (#107)

src/datasources/sql/products-sql.ts

@@ -12,6 +12,7 @@ SELECT products.productid AS id,
   products.designerid,
   products.inserted,
   products.updated,
+  products.publishing_date,
   products.ref1,
   products.ref2,
   products.ref3,
@@ -89,7 +90,7 @@ export function products(input: ProductsFilterInput) {
   AND products.browsable = ${filter?.browsable ? '1' : '0'}`
       : ``
   }
-ORDER BY products.inserted DESC
+ORDER BY products.publishing_date DESC
 LIMIT ${limit} OFFSET ${offset}
 `
   );