DropUniqueConstraintOperation Class

Reference

Definition

Namespace:: Microsoft.EntityFrameworkCore.Migrations.Operations

Assembly:: Microsoft.EntityFrameworkCore.Relational.dll

Package:: Microsoft.EntityFrameworkCore.Relational v1.0.6

Package:: Microsoft.EntityFrameworkCore.Relational v1.1.6

Package:: Microsoft.EntityFrameworkCore.Relational v2.0.3

Package:: Microsoft.EntityFrameworkCore.Relational v2.1.11

Package:: Microsoft.EntityFrameworkCore.Relational v2.2.6

Package:: Microsoft.EntityFrameworkCore.Relational v3.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v3.1.0

Package:: Microsoft.EntityFrameworkCore.Relational v5.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v6.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v7.0.0

Package:: Microsoft.EntityFrameworkCore.Relational v8.0.0

Important

Some information relates to prerelease product that may be substantially modified before it’s released. Microsoft makes no warranties, express or implied, with respect to the information provided here.

A MigrationOperation for dropping an existing unique constraint.

public class DropUniqueConstraintOperation : Microsoft.EntityFrameworkCore.Migrations.Operations.MigrationOperation

[System.Diagnostics.DebuggerDisplay("ALTER TABLE {Table} DROP CONSTRAINT {Name}")]
public class DropUniqueConstraintOperation : Microsoft.EntityFrameworkCore.Migrations.Operations.MigrationOperation

[System.Diagnostics.DebuggerDisplay("ALTER TABLE {Table} DROP CONSTRAINT {Name}")]
public class DropUniqueConstraintOperation : Microsoft.EntityFrameworkCore.Migrations.Operations.MigrationOperation, Microsoft.EntityFrameworkCore.Migrations.Operations.ITableMigrationOperation

type DropUniqueConstraintOperation = class
    inherit MigrationOperation

[<System.Diagnostics.DebuggerDisplay("ALTER TABLE {Table} DROP CONSTRAINT {Name}")>]
type DropUniqueConstraintOperation = class
    inherit MigrationOperation

[<System.Diagnostics.DebuggerDisplay("ALTER TABLE {Table} DROP CONSTRAINT {Name}")>]
type DropUniqueConstraintOperation = class
    inherit MigrationOperation
    interface ITableMigrationOperation

Public Class DropUniqueConstraintOperation
Inherits MigrationOperation

Public Class DropUniqueConstraintOperation
Inherits MigrationOperation
Implements ITableMigrationOperation

Inheritance: Object

Annotatable

MigrationOperation
DropUniqueConstraintOperation

Inheritance: Object

AnnotatableBase

Annotatable

MigrationOperation
DropUniqueConstraintOperation

Attributes: DebuggerDisplayAttribute

Implements: ITableMigrationOperation

Remarks

See Database migrations for more information and examples.

Constructors

DropUniqueConstraintOperation()

Properties

IsDestructiveChange	Indicates whether or not the operation might result in loss of data in the database. (Inherited from MigrationOperation)
IsReadOnly	Indicates whether the current object is read-only. (Inherited from AnnotatableBase)
Item[String]	Gets the value annotation with the given name, returning `null` if it does not exist. (Inherited from Annotatable)
Name	The name of the constraint.
Schema	The schema that contains the table, or `null` if the default schema should be used.
Table	The table that contains the constraint.

Methods

AddAnnotation(String, Annotation)	Adds an annotation to this object. Throws if an annotation with the specified name already exists. (Inherited from Annotatable)
AddAnnotation(String, Object)	Adds an annotation to this object. Throws if an annotation with the specified name already exists. (Inherited from Annotatable)
AddAnnotations(IEnumerable<IAnnotation>)	Adds annotations to this object. (Inherited from AnnotatableBase)
AddAnnotations(IReadOnlyDictionary<String,Object>)	Adds annotations to this object. (Inherited from AnnotatableBase)
AddRuntimeAnnotation(String, Annotation)	Adds a runtime annotation to this object. Throws if an annotation with the specified name already exists. (Inherited from AnnotatableBase)
AddRuntimeAnnotation(String, Object)	Adds a runtime annotation to this object. Throws if an annotation with the specified name already exists. (Inherited from AnnotatableBase)
AddRuntimeAnnotations(IEnumerable<Annotation>)	Adds runtime annotations to this object. (Inherited from AnnotatableBase)
AddRuntimeAnnotations(IReadOnlyDictionary<String,Object>)	Adds runtime annotations to this object. (Inherited from AnnotatableBase)
CreateAnnotation(String, Object)	Creates a new annotation. (Inherited from Annotatable)
CreateRuntimeAnnotation(String, Object)	Creates a new runtime annotation. (Inherited from AnnotatableBase)
EnsureMutable()	Throws if the model is read-only. (Inherited from Annotatable)
EnsureReadOnly()	Throws if the model is not read-only. (Inherited from Annotatable)
FindAnnotation(String)	Gets the annotation with the given name, returning `null` if it does not exist. (Inherited from Annotatable)
FindRuntimeAnnotation(String)	Gets the runtime annotation with the given name, returning `null` if it does not exist. (Inherited from AnnotatableBase)
GetAnnotation(String)	Gets the annotation with the given name, throwing if it does not exist. (Inherited from AnnotatableBase)
GetAnnotations()	Gets all annotations on the current object. (Inherited from Annotatable)
GetOrAddAnnotation(String, Object)	Adds an annotation to this object or returns the existing annotation if one with the specified name already exists. (Inherited from Annotatable)
GetOrAddRuntimeAnnotationValue<TValue,TArg>(String, Func<TArg,TValue>, TArg)	Gets the value of the runtime annotation with the given name, adding it if one does not exist. (Inherited from AnnotatableBase)
GetRuntimeAnnotations()	Gets all runtime annotations on the current object. (Inherited from AnnotatableBase)
OnAnnotationSet(String, Annotation, Annotation)	Called when an annotation was set or removed. (Inherited from Annotatable)
RemoveAnnotation(String)	Removes the given annotation from this object. (Inherited from Annotatable)
RemoveRuntimeAnnotation(String)	Removes the given runtime annotation from this object. (Inherited from AnnotatableBase)
SetAnnotation(String, Annotation, Annotation)	Sets the annotation stored under the given key. Overwrites the existing annotation if an annotation with the specified name already exists. (Inherited from Annotatable)
SetAnnotation(String, Annotation)	Sets the annotation stored under the given key. Overwrites the existing annotation if an annotation with the specified name already exists. (Inherited from Annotatable)
SetAnnotation(String, Object)	Sets the annotation stored under the given key. Overwrites the existing annotation if an annotation with the specified name already exists. (Inherited from Annotatable)
SetRuntimeAnnotation(String, Annotation, Annotation)	Sets the runtime annotation stored under the given key. Overwrites the existing annotation if an annotation with the specified name already exists. (Inherited from AnnotatableBase)
SetRuntimeAnnotation(String, Object)	Sets the runtime annotation stored under the given key. Overwrites the existing annotation if an annotation with the specified name already exists. (Inherited from AnnotatableBase)

Explicit Interface Implementations

IAnnotatable.AddRuntimeAnnotation(String, Object)	Adds a runtime annotation to this object. Throws if an annotation with the specified name already exists. (Inherited from AnnotatableBase)
IAnnotatable.FindAnnotation(String)	Gets the annotation with the given name, returning null if it does not exist. (Inherited from Annotatable)
IAnnotatable.FindRuntimeAnnotation(String)	Gets the runtime annotation with the given name, returning `null` if it does not exist. (Inherited from AnnotatableBase)
IAnnotatable.GetAnnotations()	Gets all annotations on the current object. (Inherited from Annotatable)
IAnnotatable.GetRuntimeAnnotations()	Gets all the runtime annotations on the current object. (Inherited from AnnotatableBase)
IAnnotatable.RemoveRuntimeAnnotation(String)	Removes the given runtime annotation from this object. (Inherited from AnnotatableBase)
IAnnotatable.SetRuntimeAnnotation(String, Object)	Sets the runtime annotation stored under the given key. Overwrites the existing annotation if an annotation with the specified name already exists. (Inherited from AnnotatableBase)
IMutableAnnotatable.AddAnnotation(String, Object)	Adds an annotation to this object. Throws if an annotation with the specified name already exists. (Inherited from Annotatable)
IMutableAnnotatable.RemoveAnnotation(String)	Removes the given annotation from this object. (Inherited from Annotatable)
IMutableAnnotatable.SetOrRemoveAnnotation(String, Object)	Sets the annotation stored under the given name. Overwrites the existing annotation if an annotation with the specified name already exists. Removes the existing annotation if `null` is supplied. (Inherited from Annotatable)
IReadOnlyAnnotatable.FindAnnotation(String)	Gets the annotation with the given name, returning `null` if it does not exist. (Inherited from AnnotatableBase)
IReadOnlyAnnotatable.GetAnnotations()	Gets all annotations on the current object. (Inherited from AnnotatableBase)
IReadOnlyAnnotatable.Item[String]	Gets the value of the annotation with the given name, returning `null` if it does not exist. (Inherited from AnnotatableBase)

Extension Methods

AnnotationsToDebugString(IAnnotatable, Int32)	Gets the debug string for all annotations declared on the object.
GetAnnotation(IAnnotatable, String)	Gets the annotation with the given name, throwing if it does not exist.
AddAnnotations(IMutableAnnotatable, IEnumerable<IAnnotation>)	Adds annotations to an object.
GetAnnotation(IMutableAnnotatable, String)	Gets the annotation with the given name, throwing if it does not exist.
GetOrAddAnnotation(IMutableAnnotatable, String, String)	Gets the existing annotation with a given key, or adds a new annotation if one does not exist.
SetOrRemoveAnnotation(IMutableAnnotatable, String, Object)	Sets the annotation stored under the given name. Overwrites the existing annotation if an annotation with the specified name already exists. Removes the existing annotation if `null` is supplied.

Applies to

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