Column Class
The Column object represents a SQL Server column.
Assembly: Microsoft.SqlServer.Smo (in Microsoft.SqlServer.Smo.dll)
| Name | Description | |
|---|---|---|
![]() | Column() | Initializes a new instance of the Column class. |
![]() | Column(SqlSmoObject^, String^) | Initializes a new instance of the Column class that has the specified parent and specified name. |
![]() | Column(SqlSmoObject^, String^, DataType^) | Initializes a new instance of the Column class that has the specified parent and specified name. |
![]() | Column(SqlSmoObject^, String^, DataType^, Boolean) | Initializes a new instance of the Column class that uses the specified parent, datayype, and optionally adding the FILESTREAM attribute. |
| Name | Description | |
|---|---|---|
![]() | AnsiPaddingStatus | Gets a Boolean property value that specifies whether the ANSI_PADDING_ENABLED column option is active. |
![]() | Collation | Gets or sets the default collation that is used by the column. |
![]() | ColumnEncryptionKeyID | Gets or sets the column for this encryption key identifier. |
![]() | ColumnEncryptionKeyName | Gets or sets the column encryption key name. |
![]() | Computed | Gets the Boolean property value that specifies whether the column is the product of computed expression |
![]() | ComputedText | Gets or sets the Transact-SQL expression that is used to generate the value of a computed column |
![]() | DataType | Gets or sets the data type that is assigned to the column. |
![]() | Default | Gets or sets the default bound to the column. |
![]() | DefaultConstraint | Gets a default value for the column. |
![]() | DefaultSchema | Gets or sets the default schema that is bound to the column. |
![]() | EncryptionAlgorithm | Gets or sets the encryption algorithm of the column object. |
![]() | EncryptionType | Gets or sets the encryption type for the column object. |
![]() | ExecutionManager | Gets the object to execute to the manager.(Inherited from SqlSmoObject.) |
![]() | ExtendedProperties | Represents a collection of ExtendedProperty objects. Each ExtendedProperty object represents an extended property for the Column object. |
![]() | GeneratedAlwaysType | Gets or sets the generated always type for the column. |
![]() | ID | Gets the column ID that uniquely identifies the column. |
![]() | Identity | Gets or sets the Boolean property value that specifies whether the column is an identity column. |
![]() | IdentityIncrement | Gets or sets the identity increment for an identity column. |
![]() | IdentitySeed | Gets or sets the identity seed for an identity column. |
![]() | InPrimaryKey | Gets the Boolean property value that specifies whether the column is included in the definition of a primary key or unique key constraint. |
![]() | IsColumnSet | Gets or sets a Boolean value that specifies whether the column is a sparse column that is a member of a column set. |
![]() | IsDeterministic | Gets or sets the Boolean property value that specifies whether the value of a computed column can change in subsequent invocations. |
![]() | IsEncrypted | Gets a value that indicates whether the object is encrypted. |
![]() | IsFileStream | Gets a T:System.boolean value that represents the FILESTREAM attribute of the column. |
![]() | IsForeignKey | Gets the Boolean property value that specifies whether the column is a foreign key. |
![]() | IsFullTextIndexed | Gets the Boolean property value that specifies whether the column participates in a full-text index. |
![]() | IsHidden | Gets or sets that indicates whether the object is hidden. |
![]() | IsMasked | Gets or sets a value that indicates whether the column is masked. |
![]() | IsPersisted | Gets the Boolean property value that specifies whether the computed value of the Column object is saved with the data, thus avoiding a computation each time the column is accessed. |
![]() | IsPrecise | Gets or sets the Boolean property value that specifies whether a computed column is a precise value. |
![]() | IsSparse | Gets or sets the Boolean property value that specifies whether this is a sparse column. For more information about sparse columns, see Use Sparse Columns. |
![]() | MaskingFunction | Gets or sets the masking function that is used for the column. |
![]() | Name | Gets or sets a String value that specifies the name of the column.(Overrides NamedSmoObject::Name.) |
![]() | NotForReplication | Gets the Boolean property value that specifies whether the column is participating in replication. |
![]() | Nullable | Gets or sets the Boolean property value that specifies whether the column can accept null values. |
![]() | Parent | Gets the SqlSmoObject object that is the parent of the Column object. |
![]() | Properties | Gets a collection of Property objects that represent the object properties.(Inherited from SqlSmoObject.) |
![]() | RowGuidCol | Gets or sets the Boolean property value that specifies whether the column is automatically updated with a unique GUID value. |
![]() | Rule | Gets or sets the rule that is bound to the column. |
![]() | RuleSchema | Gets or sets the rule schema that is bound to the column. |
![]() | State | Gets the state of the referenced object.(Inherited from SmoObjectBase.) |
![]() | StatisticalSemantics | Gets or sets a value to indicate whether a column has been enabled for Semantic Extraction and Indexing. |
![]() | Urn | Gets the Uniform Resource Name (URN) address value that uniquely identifies the object.(Inherited from SqlSmoObject.) |
![]() | UserData | Gets or sets user-defined data associated with the referenced object.(Inherited from SmoObjectBase.) |
| Name | Description | |
|---|---|---|
![]() | AddDefaultConstraint() | Adds a default constraint to the column. |
![]() | AddDefaultConstraint(String^) | Adds a default constraint to the column. |
![]() | Alter() | Updates any Column object property changes on the instance of SQL Server. |
![]() | BindDefault(String^, String^) | Binds a default to the column. |
![]() | BindRule(String^, String^) | Binds a rule to the column. |
![]() | Create() | Creates a column on the instance of Microsoft SQL Server as defined by the Column object. |
![]() | Discover() | Discovers a list of type Object.(Inherited from SqlSmoObject.) |
![]() | Drop() | Drops the column. |
![]() | DropIfExists() | Drops the column if it exists. |
![]() | EnumForeignKeys() | Enumerates a list of foreign keys that reference the column. |
![]() | EnumIndexes() | Enumerates a list of indexes that include the column. |
![]() | EnumUserPermissions(String^) | Enumerates a list of permissions for a specified user. |
![]() | Equals(Object^) | (Inherited from Object.) |
![]() | FormatSqlVariant(Object^) | Formats an object as T: Microsoft.Data.Schema.Sql.DataGenerator.SqlVariant type.(Inherited from SqlSmoObject.) |
![]() | GetContextDB() | Gets the context database that is associated with this object.(Inherited from SqlSmoObject.) |
![]() | GetDBName() | Gets the database name that is associated with the object.(Inherited from SqlSmoObject.) |
![]() | GetHashCode() | (Inherited from Object.) |
![]() | GetPropValue(String^) | Gets a property value of the SqlSmoObject object.(Inherited from SqlSmoObject.) |
![]() | GetPropValueOptional(String^) | Gets a property value of the SqlSmoObject object.(Inherited from SqlSmoObject.) |
![]() | GetPropValueOptionalAllowNull(String^) | Gets a property value of the SqlSmoObject object.(Inherited from SqlSmoObject.) |
![]() | GetServerObject() | Gets the server of the SqlSmoObject object.(Inherited from SqlSmoObject.) |
![]() | GetType() | (Inherited from Object.) |
![]() | Initialize() | Initializes the object and forces the properties be loaded.(Inherited from SqlSmoObject.) |
![]() | Initialize(Boolean) | Initializes the object and forces the properties be loaded.(Inherited from SqlSmoObject.) |
![]() | IsObjectInitialized() | Verifies whether the object has been initialized.(Inherited from SqlSmoObject.) |
![]() | IsObjectInSpace() | Verifies whether the object is isolated or connected to the instance of SQL Server.(Inherited from SqlSmoObject.) |
![]() | IsSupportedProperty(String^) | Determines whether the specified property is supported in the target .NET Framework.(Inherited from SqlSmoObject.) |
![]() | MarkForDrop(Boolean) | |
![]() | Refresh() | Refreshes the Column object properties.(Overrides ScriptNameObjectBase::Refresh().) |
![]() | Rename(String^) | Renames the column. |
![]() | SetParentImpl(SqlSmoObject^) | Sets the parent of the SqlSmoObject to the newParent parameter.(Inherited from SqlSmoObject.) |
![]() | ToString() | Returns a String that represents the referenced object.(Inherited from SqlSmoObject.) |
![]() | UnbindDefault() | Unbinds the currently bound default from the column. |
![]() | UnbindRule() | Unbinds the currently bound rule from the column. |
![]() | UpdateStatistics() | Updates Statistic objects that monitor this column. |
![]() | UpdateStatistics(StatisticsScanType) | Updates Statistic objects that monitor this column. |
![]() | UpdateStatistics(StatisticsScanType, Int32) | Updates Statistic objects that monitor this column using a sampled scan. |
![]() | UpdateStatistics(StatisticsScanType, Int32, Boolean) | Updates Statistic objects that monitor this column using a sampled scan. |
![]() | Validate(String^, array<Object^>^) | Validates the state of an object.(Inherited from SmoObjectBase.) |
| Name | Description | |
|---|---|---|
![]() | PropertyChanged | Represents the event that occurs when a property is changed.(Inherited from SqlSmoObject.) |
![]() | PropertyMetadataChanged | Represents the event that occurs when property metadata changes.(Inherited from SqlSmoObject.) |
| Name | Description | |
|---|---|---|
![]() ![]() | IAlienObject::Discover() | Discovers any dependencies. Do not reference this member directly in your code. It supports the SQL Server infrastructure.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::GetDomainRoot() | Returns the root of the domain.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::GetParent() | Gets the parent of this object. Do not reference this member directly in your code. It supports the SQL Server infrastructure.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::GetPropertyType(String^) | Gets the type of the specified property.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::GetPropertyValue(String^, Type^) | Gets the value of the specified property.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::GetUrn() | Gets the Unified Resource Name (URN) of the object. Do not reference this member directly in your code. It supports the SQL Server infrastructure.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::Resolve(String^) | Gets the instance that contains the information about the object from the Unified Resource Name (URN) of the object.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::SetObjectState(SfcObjectState) | Sets the object state to the specified SfcObjectState value.(Inherited from SqlSmoObject.) |
![]() ![]() | IAlienObject::SetPropertyValue(String^, Type^, Object^) | Sets the property value.(Inherited from SqlSmoObject.) |
![]() ![]() | ISfcPropertyProvider::GetPropertySet() | Gets the interface reference to the set of properties of this object. Do not reference this member directly in your code. It supports the SQL Server infrastructure.(Inherited from SqlSmoObject.) |
![]() ![]() | ISfcSupportsDesignMode::IsDesignMode | Gets a value that indicates whether the object supports design mode. |
To get Column object properties, users can be a member of the public fixed server role.
To do any of the following, users must have ALTER permission on the parent table, or be a member of the db_owner fixed database role:
Set Column object properties and run the Alter method
Create a column
Drop a column
Any public static (Shared in Microsoft Visual Basic) members of this type are safe for multithreaded operations. Any instance members are not guaranteed to be thread safe.
Any public static ( Shared in Visual Basic) members of this type are thread safe. Any instance members are not guaranteed to be thread safe.






