public sealed class TableFieldSchema : IMessage<TableFieldSchema>, IEquatable<TableFieldSchema>, IDeepCloneable<TableFieldSchema>, IBufferMessage, IMessageReference documentation and code samples for the Google BigQuery Storage v1 API class TableFieldSchema.
TableFieldSchema defines a single field/column within a table schema.
Implements
IMessageTableFieldSchema, IEquatableTableFieldSchema, IDeepCloneableTableFieldSchema, IBufferMessage, IMessageNamespace
Google.Cloud.BigQuery.Storage.V1Assembly
Google.Cloud.BigQuery.Storage.V1.dll
Constructors
TableFieldSchema()
public TableFieldSchema()TableFieldSchema(TableFieldSchema)
public TableFieldSchema(TableFieldSchema other)| Parameter | |
|---|---|
| Name | Description |
other | TableFieldSchema |
Properties
DefaultValueExpression
public string DefaultValueExpression { get; set; }Optional. A SQL expression to specify the default value for this field.
| Property Value | |
|---|---|
| Type | Description |
string | |
Description
public string Description { get; set; }Optional. The field description. The maximum length is 1,024 characters.
| Property Value | |
|---|---|
| Type | Description |
string | |
Fields
public RepeatedField<TableFieldSchema> Fields { get; }Optional. Describes the nested schema fields if the type property is set to STRUCT.
| Property Value | |
|---|---|
| Type | Description |
RepeatedFieldTableFieldSchema | |
MaxLength
public long MaxLength { get; set; }Optional. Maximum length of values of this field for STRINGS or BYTES.
If max_length is not specified, no maximum length constraint is imposed on this field.
If type = "STRING", then max_length represents the maximum UTF-8 length of strings in this field.
If type = "BYTES", then max_length represents the maximum number of bytes in this field.
It is invalid to set this field if type is not "STRING" or "BYTES".
| Property Value | |
|---|---|
| Type | Description |
long | |
Mode
public TableFieldSchema.Types.Mode Mode { get; set; }Optional. The field mode. The default value is NULLABLE.
| Property Value | |
|---|---|
| Type | Description |
TableFieldSchemaTypesMode | |
Name
public string Name { get; set; }Required. The field name. The name must contain only letters (a-z, A-Z), numbers (0-9), or underscores (_), and must start with a letter or underscore. The maximum length is 128 characters.
| Property Value | |
|---|---|
| Type | Description |
string | |
Precision
public long Precision { get; set; }Optional. Precision (maximum number of total digits in base 10) and scale (maximum number of digits in the fractional part in base 10) constraints for values of this field for NUMERIC or BIGNUMERIC.
It is invalid to set precision or scale if type is not "NUMERIC" or "BIGNUMERIC".
If precision and scale are not specified, no value range constraint is imposed on this field insofar as values are permitted by the type.
Values of this NUMERIC or BIGNUMERIC field must be in this range when:
- Precision (P) and scale (S) are specified: [-10^(P-S) + 10^(-S), 10^(P-S) - 10^(-S)]
- Precision (P) is specified but not scale (and thus scale is interpreted to be equal to zero): [-10^P + 1, 10^P - 1].
Acceptable values for precision and scale if both are specified:
- If type = "NUMERIC": 1 <= precision - scale <= 29 and 0 <= scale <= 9.
- If type = "BIGNUMERIC": 1 <= precision - scale <= 38 and 0 <= scale <= 38.
Acceptable values for precision if only precision is specified but not scale (and thus scale is interpreted to be equal to zero):
- If type = "NUMERIC": 1 <= precision <= 29.
- If type = "BIGNUMERIC": 1 <= precision <= 38.
If scale is specified but not precision, then it is invalid.
| Property Value | |
|---|---|
| Type | Description |
long | |
RangeElementType
public TableFieldSchema.Types.FieldElementType RangeElementType { get; set; }Optional. The subtype of the RANGE, if the type of this field is RANGE. If the type is RANGE, this field is required. Possible values for the field element type of a RANGE include:
- DATE
- DATETIME
- TIMESTAMP
| Property Value | |
|---|---|
| Type | Description |
TableFieldSchemaTypesFieldElementType | |
Scale
public long Scale { get; set; }Optional. See documentation for precision.
| Property Value | |
|---|---|
| Type | Description |
long | |
Type
public TableFieldSchema.Types.Type Type { get; set; }Required. The field data type.
| Property Value | |
|---|---|
| Type | Description |
TableFieldSchemaTypesType | |