Generate a GraphQL Schema Definition from the Result of a Google BigQuery Query
npm install bigqueryquery-to-graphql-schemaGenerate a GraphQL Schema Definition from the Result of a Google BigQuery SQL Query:
``js`
await queryFileToSchema('./sql/Intrastat.sql')
gets you:
`graphql`
#generated from ./sql/Intrastat.sql
type BqIntrastat {
belegmonat: String # {"name":"belegmonat","type":"STRING","mode":"NULLABLE"}
menge: Int # {"name":"menge","type":"INTEGER","mode":"NULLABLE"}
items: [String] # {"name":"items","type":"STRING","mode":"REPEATED"}
}
type BqIntrastatResult {
rows: [BqIntrastat]
meta: BqJobMeta
}
If you want to provide the sql query directly instead as a filename, use queryToSchema()
There is also a command line tool for easy access:
`
$ yarn run bigqueryquery-to-graphql-schema --help
yarn run v1.22.17
usage: bq2gqlschema.ts [-h] [--projectId PROJECTID] [--location LOCATION] sqlfile [sqlfile ...]
Convert BigQuery SQL Query to the resulting GraphQL Schema.
positional arguments:
sqlfile Filename with a single BigQuery SQL Query.
optional arguments:
-h, --help show this help message and exit
--projectId PROJECTID
BigQuery project ID
--location LOCATION BigQuery Dataset Location
Please provide GOOGLE_APPLICATION_CREDENTIALS via the Environment!`
To use the generated GraphQL you also have to add the following static types somewhere to your schema:
`graphql
scalar Date
scalar DateTime
type BqStatus {
state: String
}
type BqStatistics {
creationTime: String
startTime: String
endTime: String
totalBytesProcessed: String
query: BqQuery
}
type BqJobReference {
projectId: String
jobId: String
location: String
}
type BqDestinationTable {
projectId: String
datasetId: String
tableId: String
}
type BqQuery {
query: String
writeDisposition: String
priority: String
useLegacySql: Boolean
destinationTable: BqDestinationTable
}
type BqConfiguration {
jobType: String
query: BqQuery
}
type BqJobMeta {
kind: String
etag: String
id: String
selfLink: String
user_email: String
status: BqStatus
statistics: BqStatistics
jobReference: BqJobReference
configuration: BqConfiguration
}
``