How to use the gatsby-source-graphql/gatsby-node.sourceNodes function in gatsby-source-graphql
To help you get started, we’ve selected a few gatsby-source-graphql examples, based on popular ways it is used in public projects.
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graphile / gatsby-source-pg / gatsby-node.js View on Github 
utils,
{
typeName = "PostGraphile",
fieldName = "postgres",
refetchInterval,
...options
}
) => {
const { connectionString, schema: postgresSchema, ...rest } = options;
const pool = new Pool({
connectionString,
});
const graphqlSchema = await createSchema(pool, postgresSchema, rest);
await gatsbySourceGraphQLNode.sourceNodes(utils, {
typeName,
fieldName,
refetchInterval,
createLink: () => new PostGraphileLink({ pool, schema: graphqlSchema }),
createSchema: () => graphqlSchema,
});
};gatsby-source-graphql
Gatsby plugin which adds a third-party GraphQL API to Gatsby GraphQL
