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Schemas for BigQuery tables / queries.
Classes
FieldElementType
FieldElementType
(
element_type
:
str
)
Represents the type of a field element.
element_type
str
The type of a field element.
ForeignTypeInfo
ForeignTypeInfo
(
type_system
:
typing
.
Optional
[
str
]
=
None
)
Metadata about the foreign data type definition such as the system in which the type is defined.
type_system
str
Required. Specifies the system which defines the foreign data type. TypeSystem enum currently includes: * "TYPE_SYSTEM_UNSPECIFIED" * "HIVE"
PolicyTagList
PolicyTagList
(
names
:
typing
.
Iterable
[
str
]
=
())
Define Policy Tags for a column.
SchemaField
SchemaField
(
name
:
str
,
field_type
:
str
,
mode
:
str
=
"NULLABLE"
,
default_value_expression
:
typing
.
Optional
[
str
]
=
None
,
description
:
typing
.
Union
[
str
,
google
.
cloud
.
bigquery
.
schema
.
_DefaultSentinel
]
=
_DefaultSentinel
.
DEFAULT_VALUE
,
fields
:
typing
.
Iterable
[
google
.
cloud
.
bigquery
.
schema
.
SchemaField
]
=
(),
policy_tags
:
typing
.
Union
[
google
.
cloud
.
bigquery
.
schema
.
PolicyTagList
,
None
,
google
.
cloud
.
bigquery
.
schema
.
_DefaultSentinel
,
]
=
_DefaultSentinel
.
DEFAULT_VALUE
,
precision
:
typing
.
Union
[
int
,
google
.
cloud
.
bigquery
.
schema
.
_DefaultSentinel
]
=
_DefaultSentinel
.
DEFAULT_VALUE
,
scale
:
typing
.
Union
[
int
,
google
.
cloud
.
bigquery
.
schema
.
_DefaultSentinel
]
=
_DefaultSentinel
.
DEFAULT_VALUE
,
max_length
:
typing
.
Union
[
int
,
google
.
cloud
.
bigquery
.
schema
.
_DefaultSentinel
]
=
_DefaultSentinel
.
DEFAULT_VALUE
,
range_element_type
:
typing
.
Optional
[
typing
.
Union
[
google
.
cloud
.
bigquery
.
schema
.
FieldElementType
,
str
]
]
=
None
,
)
Describe a single field within a table schema.
SerDeInfo
SerDeInfo
(
serialization_library
:
str
,
name
:
typing
.
Optional
[
str
]
=
None
,
parameters
:
typing
.
Optional
[
dict
[
str
,
str
]]
=
None
,
)
Serializer and deserializer information.
serialization_library
str
Required. Specifies a fully-qualified class name of the serialization library that is responsible for the translation of data between table representation and the underlying low-level input and output format structures. The maximum length is 256 characters.
name
Optional[str]
Name of the SerDe. The maximum length is 256 characters.
StorageDescriptor
StorageDescriptor
(
input_format
:
typing
.
Optional
[
str
]
=
None
,
location_uri
:
typing
.
Optional
[
str
]
=
None
,
output_format
:
typing
.
Optional
[
str
]
=
None
,
serde_info
:
typing
.
Optional
[
typing
.
Union
[
google
.
cloud
.
bigquery
.
schema
.
SerDeInfo
,
dict
]
]
=
None
,
)
Contains information about how a table's data is stored and accessed by open source query engines.
input_format
Optional[str]
Specifies the fully qualified class name of the InputFormat (e.g. "org.apache.hadoop.hive.ql.io.orc.OrcInputFormat"). The maximum length is 128 characters.
location_uri
Optional[str]
The physical location of the table (e.g. 'gs://spark-dataproc-data/pangea-data/case_sensitive/' or 'gs://spark-dataproc-data/pangea-data/'). The maximum length is 2056 bytes.
output_format
Optional[str]
Specifies the fully qualified class name of the OutputFormat (e.g. "org.apache.hadoop.hive.ql.io.orc.OrcOutputFormat"). The maximum length is 128 characters.
serde_info
Union[SerDeInfo, dict, None]
Serializer and deserializer information.
