Data Catalog v1 API - Class ColumnSchema (2.13.0)

public sealed class ColumnSchema : IMessage<ColumnSchema>, IEquatable<ColumnSchema>, IDeepCloneable<ColumnSchema>, IBufferMessage, IMessage

Reference documentation and code samples for the Data Catalog v1 API class ColumnSchema.

A column within a schema. Columns can be nested inside other columns.

Inheritance

object > ColumnSchema

Implements

IMessage ColumnSchema, IEquatable ColumnSchema, IDeepCloneable ColumnSchema, IBufferMessage, IMessage

Inherited Members

object.GetHashCode()

object.GetType()

object.ToString()

Namespace

Google.Cloud.DataCatalog.V1

Assembly

Google.Cloud.DataCatalog.V1.dll

Constructors

ColumnSchema()

public ColumnSchema()

ColumnSchema(ColumnSchema)

public ColumnSchema(ColumnSchema other)

Parameter
Name	Description
`other`	`ColumnSchema`

Properties

Column

public string Column { get; set; }

Required. Name of the column.

Must be a UTF-8 string without dots (.). The maximum size is 64 bytes.

Property Value
Type	Description
`string`

DefaultValue

public string DefaultValue { get; set; }

Optional. Default value for the column.

Property Value
Type	Description
`string`

Description

public string Description { get; set; }

Optional. Description of the column. Default value is an empty string.

The description must be a UTF-8 string with the maximum size of 2000 bytes.

Property Value
Type	Description
`string`

GcRule

public string GcRule { get; set; }

Optional. Garbage collection policy for the column or column family. Applies to systems like Cloud Bigtable.

Property Value
Type	Description
`string`

HighestIndexingType

public ColumnSchema.Types.IndexingType HighestIndexingType { get; set; }

Optional. Most important inclusion of this column.

Property Value
Type	Description
`ColumnSchemaTypesIndexingType`

LookerColumnSpec

public ColumnSchema.Types.LookerColumnSpec LookerColumnSpec { get; set; }

Looker specific column info of this column.

Property Value
Type	Description
`ColumnSchemaTypesLookerColumnSpec`

Mode

public string Mode { get; set; }

Optional. A column's mode indicates whether values in this column are required, nullable, or repeated.

Only NULLABLE, REQUIRED, and REPEATED values are supported. Default mode is NULLABLE.

Property Value
Type	Description
`string`

OrdinalPosition

public int OrdinalPosition { get; set; }

Optional. Ordinal position

Property Value
Type	Description
`int`

RangeElementType

public ColumnSchema.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
`ColumnSchemaTypesFieldElementType`

Subcolumns

public RepeatedField<ColumnSchema> Subcolumns { get; }

Optional. Schema of sub-columns. A column can have zero or more sub-columns.

Property Value
Type	Description
`RepeatedFieldColumnSchema`

SystemSpecCase

public ColumnSchema.SystemSpecOneofCase SystemSpecCase { get; }

Property Value
Type	Description
`ColumnSchemaSystemSpecOneofCase`

Type

public string Type { get; set; }

Required. Type of the column.

Must be a UTF-8 string with the maximum size of 128 bytes.

Property Value
Type	Description
`string`