// Intentional failure: separate table columns cannot form this packed view without a copy.
import aner.data
var schema = data.schema()
schema = data.column(schema, "row_id", "Int64", false)
schema = data.column(schema, "building_id", "String", false)
schema = data.column(schema, "temperature", "Float64", false)
schema = data.column(schema, "energy", "Float64", false)
let table = data.collect(data.scan_csv("examples/fixtures/contextual/standardization.csv", schema, "NA"), 3, 1048576, 2)
let frame = data.frame(table, "row_id", "building_id", "energy", List("", "", "degC", "kWh"))
let forbidden = data.batch(frame, 1024, "forbid")