TableReadOptions(mapping=None, *, ignore_unknown_fields=False, **kwargs)
Options dictating how we read a table.
Attributes
Name | Description |
selected_fields |
Sequence[str]
Names of the fields in the table that should be read. If empty, all fields will be read. If the specified field is a nested field, all the sub-fields in the field will be selected. The output field order is unrelated to the order of fields in selected_fields. |
row_restriction |
str
SQL text filtering statement, similar to a WHERE clause in a query. Aggregates are not supported. Examples: "int_field > 5" "date_field = CAST('2014-9-27' as DATE)" "nullable_field is not NULL" "st_equals(geo_field, st_geofromtext("POINT(2, 2)"))" "numeric_field BETWEEN 1.0 AND 5.0". |
arrow_serialization_options |
google.cloud.bigquery_storage_v1beta2.types.ArrowSerializationOptions
Optional. Options specific to the Apache Arrow output format. |