# Class NpgsqlDeleteConvertingExpressionVisitor

Namespace
  Npgsql.EntityFrameworkCore.PostgreSQL.Query.Internal

Assembly
  Npgsql.EntityFrameworkCore.PostgreSQL.dll

Converts the relational NonQueryExpression into a PG-specific PgDeleteExpression, which precisely models a DELETE statement in PostgreSQL. This is done to handle the PG-specific USING syntax for table joining.

    public class NpgsqlDeleteConvertingExpressionVisitor : ExpressionVisitor

Inheritance
  object
  ExpressionVisitor
  NpgsqlDeleteConvertingExpressionVisitor

Inherited Members
  ExpressionVisitor.Visit(ReadOnlyCollection<Expression>)
  ExpressionVisitor.Visit(Expression)
  ExpressionVisitor.VisitAndConvert<T>(ReadOnlyCollection<T>, string)
  ExpressionVisitor.VisitAndConvert<T>(T, string)
  ExpressionVisitor.VisitBinary(BinaryExpression)
  ExpressionVisitor.VisitBlock(BlockExpression)
  ExpressionVisitor.VisitCatchBlock(CatchBlock)
  ExpressionVisitor.VisitConditional(ConditionalExpression)
  ExpressionVisitor.VisitConstant(ConstantExpression)
  ExpressionVisitor.VisitDebugInfo(DebugInfoExpression)
  ExpressionVisitor.VisitDefault(DefaultExpression)
  ExpressionVisitor.VisitDynamic(DynamicExpression)
  ExpressionVisitor.VisitElementInit(ElementInit)
  ExpressionVisitor.VisitExtension(Expression)
  ExpressionVisitor.VisitGoto(GotoExpression)
  ExpressionVisitor.VisitIndex(IndexExpression)
  ExpressionVisitor.VisitInvocation(InvocationExpression)
  ExpressionVisitor.VisitLabel(LabelExpression)
  ExpressionVisitor.VisitLabelTarget(LabelTarget)
  ExpressionVisitor.VisitLambda<T>(Expression<T>)
  ExpressionVisitor.VisitListInit(ListInitExpression)
  ExpressionVisitor.VisitLoop(LoopExpression)
  ExpressionVisitor.VisitMember(MemberExpression)
  ExpressionVisitor.VisitMemberAssignment(MemberAssignment)
  ExpressionVisitor.VisitMemberBinding(MemberBinding)
  ExpressionVisitor.VisitMemberInit(MemberInitExpression)
  ExpressionVisitor.VisitMemberListBinding(MemberListBinding)
  ExpressionVisitor.VisitMemberMemberBinding(MemberMemberBinding)
  ExpressionVisitor.VisitMethodCall(MethodCallExpression)
  ExpressionVisitor.VisitNew(NewExpression)
  ExpressionVisitor.VisitNewArray(NewArrayExpression)
  ExpressionVisitor.VisitParameter(ParameterExpression)
  ExpressionVisitor.VisitRuntimeVariables(RuntimeVariablesExpression)
  ExpressionVisitor.VisitSwitch(SwitchExpression)
  ExpressionVisitor.VisitSwitchCase(SwitchCase)
  ExpressionVisitor.VisitTry(TryExpression)
  ExpressionVisitor.VisitTypeBinary(TypeBinaryExpression)
  ExpressionVisitor.VisitUnary(UnaryExpression)
  ExpressionVisitor.Visit<T>(ReadOnlyCollection<T>, Func<T, T>)
  object.Equals(object)
  object.Equals(object, object)
  object.GetHashCode()
  object.GetType()
  object.MemberwiseClone()
  object.ReferenceEquals(object, object)
  object.ToString()

## Methods

### Process(Expression)

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 virtual Expression Process(Expression node)

#### Parameters

`node` Expression

#### Returns

Expression

### VisitDelete(DeleteExpression)

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.

    protected virtual Expression VisitDelete(DeleteExpression deleteExpression)

#### Parameters

`deleteExpression` DeleteExpression

#### Returns

Expression