# Class NpgsqlAlterDatabaseOperationExtensions

Namespace
  Microsoft.EntityFrameworkCore

Assembly
  Npgsql.EntityFrameworkCore.PostgreSQL.dll

Extension methods for AlterDatabaseOperation for Npgsql-specific metadata.

    public static class NpgsqlAlterDatabaseOperationExtensions

Inheritance
  object
  NpgsqlAlterDatabaseOperationExtensions

Inherited Members
  object.Equals(object)
  object.Equals(object, object)
  object.GetHashCode()
  object.GetType()
  object.MemberwiseClone()
  object.ReferenceEquals(object, object)
  object.ToString()

## Methods

### GetOldPostgresCollations(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresCollation> GetOldPostgresCollations(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresCollation>

### GetOldPostgresEnums(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresEnum> GetOldPostgresEnums(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresEnum>

### GetOldPostgresExtensions(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresExtension> GetOldPostgresExtensions(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresExtension>

### GetOldPostgresRanges(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresRange> GetOldPostgresRanges(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresRange>

### GetOrAddPostgresExtension(AlterDatabaseOperation, string?, string, string?)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static PostgresExtension GetOrAddPostgresExtension(this AlterDatabaseOperation operation, string? schema, string name, string? version)

#### Parameters

`operation` AlterDatabaseOperation
`schema` string
`name` string
`version` string

#### Returns

PostgresExtension

### GetPostgresCollations(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresCollation> GetPostgresCollations(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresCollation>

### GetPostgresEnums(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresEnum> GetPostgresEnums(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresEnum>

### GetPostgresExtensions(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresExtension> GetPostgresExtensions(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresExtension>

### GetPostgresRanges(AlterDatabaseOperation)

This is an internal API that supports the Entity Framework Core infrastructure and not subject to the same compatibility standards as public APIs. It may be changed or removed without notice in any release. You should only use it directly in your code with extreme caution and knowing that doing so can result in application failures when updating to a new Entity Framework Core release.

    public static IReadOnlyList<PostgresRange> GetPostgresRanges(this AlterDatabaseOperation operation)

#### Parameters

`operation` AlterDatabaseOperation

#### Returns

IReadOnlyList<PostgresRange>