create table variants (
  id bigint,
  product_id bigint,
  sku text,
  title text,
  is_available boolean,
  price ,
  shipping ,
  created_at text,
  updated_at text,
  sizes 
);

comment on column variants.id is '
  The unique numeric identifier for the product variant.
';
comment on column variants.product_id is '
  The unique numeric identifier for the product.
';
comment on column variants.sku is '
  A unique identifier for the product variant in the shop. Required in order to connect to a FulfillmentService.
';
comment on column variants.title is '
  The title of the product variant.
';
comment on column variants.is_available is '
  If the variant is availabor not
';
comment on column variants.created_at is '
  The date and time (ISO 8601 format) when the product was created.
';
comment on column variants.updated_at is '
  The date and time (ISO 8601 format) when the product was last modified.
';