# Class NpgsqlUnnestPostprocessor

Namespace
  Npgsql.EntityFrameworkCore.PostgreSQL.Query.Internal

Assembly
  Npgsql.EntityFrameworkCore.PostgreSQL.dll

Locates instances of PgUnnestExpression in the tree and prunes the WITH ORDINALITY clause from them if the ordinality column isn't referenced anywhere.

    public class NpgsqlUnnestPostprocessor : ExpressionVisitor

Inheritance
  object
  ExpressionVisitor
  NpgsqlUnnestPostprocessor

Inherited Members
  ExpressionVisitor.Visit(ReadOnlyCollection<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()

## Remarks

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.

## Methods

### Visit(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 override Expression? Visit(Expression? expression)

#### Parameters

`expression` Expression

#### Returns

Expression