in Sources/XCMetricsBackendLib/Statistics/Repositories/Migrations/CreateDayBuildTime.swift [24:31]
func prepare(on database: Database) -> EventLoopFuture<Void> {
database.schema(DayBuildTime.schema)
.field("day", .date, .identifier(auto: false))
.field("duration_p50", .double, .required)
.field("duration_p95", .double, .required)
.field("total_duration", .double, .required)
.create()
}