使用graphql突变时，为什么整数不输入我的sql db？

Question

在测试我们构建的graphql突变时，通过graphiql传递的价格整数值不会输入到字段中，而是包含一个空值。

这是针对与graphQL集成的SQL数据库的。

CREATE TABLE images
(
  image_id SERIAL PRIMARY KEY,
  title VARCHAR(50) NOT NULL,
  description VARCHAR(200) NOT NULL,
  display_name VARCHAR(50) NOT NULL,
  posted_by VARCHAR(50) NOT NULL,
  date_uploaded BIGINT,
  price INT DEFAULT 0,
  thumbnail_url TEXT NOT NULL,
  obj_image_url TEXT NOT NULL,
  format VARCHAR(20) NOT NULL,
  likes INT DEFAULT 0,
  category VARCHAR(50)
);

addImage: {
      type: ImageType,
      description: "Add an image",
      args: {
        title: { type: GraphQLNonNull(GraphQLString) },
        description: { type: GraphQLNonNull(GraphQLString) },
        display_name: { type: GraphQLNonNull(GraphQLString) },
        posted_by: { type: GraphQLNonNull(GraphQLString) },
        date_uploaded: { type: BigInt },
        price: { type: GraphQLInt },
        thumbnail_url: { type: GraphQLNonNull(GraphQLString) },
        obj_image_url: { type: GraphQLNonNull(GraphQLString) },
        format: { type: GraphQLString },
        category: { type: GraphQLString }
      },
      resolve(parent, args) {
        return db
          .one(
            "INSERT INTO images(title, description, display_name, posted_by, date_uploaded, price, thumbnail_url, obj_image_url, format, category) VALUES($1, $2, $3, $4, $5, $6, $7, $8, $9, $10) RETURNING *",
            [
              args.title,
              args.description,
              args.display_name,
              args.posted_by,
              args.date_uploaded,
              args.price,
              args.thumbnail_url,
              args.obj_image_url,
              args.format,
              args.category
            ]
          )

mutation {
  addImage(title: "test", 
    description: "test", 
    display_name: "test", posted_by: "test", 
   price: 100, 
    thumbnail_url: "test", 
    obj_image_url: "test", format: "obj", 
    category: "test") {
    title
    image_id
    date_uploaded
    price
    format
    likes
    category
  }
}

期望价格字段填充为100，但是填充为空