How to get mysql blob through graphql?

@ryan.murray 

To retrieve a MySQL blob through GraphQL, you can follow these steps:

1. Define a GraphQL schema that includes a query field to retrieve the blob data. For example:

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type Query {
  getBlobData(id: ID!): BlobData
}

type BlobData {
  id: ID
  data: String
}

1. Implement a resolver for the getBlobData query that fetches the blob data from the MySQL database. You can use a MySQL client library like mysql2 in Node.js to query the database and retrieve the blob data. Here's an example using Node.js:

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const mysql = require('mysql2/promise');

const pool = mysql.createPool({
  host: 'localhost',
  user: 'root',
  database: 'my_database'
});

const resolvers = {
  Query: {
    getBlobData: async (parent, { id }) => {
      const [rows] = await pool.query('SELECT data FROM blobs WHERE id = ?', [id]);
      return { id: id, data: rows[0].data.toString('base64') };
    }
  }
};

1. Define a MySQL table where you store the blob data. You can use a BLOB data type to store binary data like images or files.

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CREATE TABLE blobs (
  id INT PRIMARY KEY,
  data BLOB
);

1. Start your GraphQL server and query the getBlobData query to retrieve the blob data by passing the ID of the blob you want to retrieve. The data will be returned as a base64-encoded string that you can decode to get the original binary data.

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{
  getBlobData(id: 1) {
    id
    data
  }
}

By following these steps, you should be able to retrieve MySQL blob data through GraphQL in your application.