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Schemas for BigQuery tables / queries.
Classes
FieldElementType
FieldElementType
(
element_type
:
str
)
Represents the type of a field element.
Parameter
Name
Description
element_type
str
The type of a field element.
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.
