# Class PgUnnestExpression

Namespace
  Npgsql.EntityFrameworkCore.PostgreSQL.Query.Expressions.Internal

Assembly
  Npgsql.EntityFrameworkCore.PostgreSQL.dll

An expression that represents a PostgreSQL `unnest` function call in a SQL tree.

    public class PgUnnestExpression : PgTableValuedFunctionExpression, IRelationalQuotableExpression, IPrintableExpression, ITableBasedExpression, IEquatable<PgTableValuedFunctionExpression>

Inheritance
  object
  Expression
  TableExpressionBase
  TableValuedFunctionExpression
  PgTableValuedFunctionExpression
  PgUnnestExpression

Implements
  IRelationalQuotableExpression
  IPrintableExpression
  ITableBasedExpression
  IEquatable<PgTableValuedFunctionExpression>

Inherited Members
  PgTableValuedFunctionExpression.ColumnInfos
  PgTableValuedFunctionExpression.WithOrdinality
  PgTableValuedFunctionExpression.Print(ExpressionPrinter)
  PgTableValuedFunctionExpression.Equals(object)
  PgTableValuedFunctionExpression.Equals(PgTableValuedFunctionExpression)
  PgTableValuedFunctionExpression.GetHashCode()
  TableValuedFunctionExpression.WithAnnotations(IReadOnlyDictionary<string, IAnnotation>)
  TableValuedFunctionExpression.Quote()
  TableValuedFunctionExpression.Alias
  TableValuedFunctionExpression.StoreFunction
  TableValuedFunctionExpression.Name
  TableValuedFunctionExpression.Schema
  TableValuedFunctionExpression.IsBuiltIn
  TableValuedFunctionExpression.Arguments
  TableExpressionBase.PrintAnnotations(ExpressionPrinter)
  TableExpressionBase.AddAnnotation(string, object)
  TableExpressionBase.FindAnnotation(string)
  TableExpressionBase.GetAnnotations()
  TableExpressionBase.GetRequiredAlias()
  TableExpressionBase.Annotations
  TableExpressionBase.Type
  TableExpressionBase.NodeType
  Expression.Accept(ExpressionVisitor)
  Expression.Add(Expression, Expression)
  Expression.Add(Expression, Expression, MethodInfo)
  Expression.AddAssign(Expression, Expression)
  Expression.AddAssign(Expression, Expression, MethodInfo)
  Expression.AddAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.AddAssignChecked(Expression, Expression)
  Expression.AddAssignChecked(Expression, Expression, MethodInfo)
  Expression.AddAssignChecked(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.AddChecked(Expression, Expression)
  Expression.AddChecked(Expression, Expression, MethodInfo)
  Expression.And(Expression, Expression)
  Expression.And(Expression, Expression, MethodInfo)
  Expression.AndAlso(Expression, Expression)
  Expression.AndAlso(Expression, Expression, MethodInfo)
  Expression.AndAssign(Expression, Expression)
  Expression.AndAssign(Expression, Expression, MethodInfo)
  Expression.AndAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.ArrayAccess(Expression, IEnumerable<Expression>)
  Expression.ArrayAccess(Expression, params Expression[])
  Expression.ArrayIndex(Expression, IEnumerable<Expression>)
  Expression.ArrayIndex(Expression, Expression)
  Expression.ArrayIndex(Expression, params Expression[])
  Expression.ArrayLength(Expression)
  Expression.Assign(Expression, Expression)
  Expression.Bind(MemberInfo, Expression)
  Expression.Bind(MethodInfo, Expression)
  Expression.Block(IEnumerable<Expression>)
  Expression.Block(IEnumerable<ParameterExpression>, IEnumerable<Expression>)
  Expression.Block(IEnumerable<ParameterExpression>, params Expression[])
  Expression.Block(Expression, Expression)
  Expression.Block(Expression, Expression, Expression)
  Expression.Block(Expression, Expression, Expression, Expression)
  Expression.Block(Expression, Expression, Expression, Expression, Expression)
  Expression.Block(params Expression[])
  Expression.Block(Type, IEnumerable<Expression>)
  Expression.Block(Type, IEnumerable<ParameterExpression>, IEnumerable<Expression>)
  Expression.Block(Type, IEnumerable<ParameterExpression>, params Expression[])
  Expression.Block(Type, params Expression[])
  Expression.Break(LabelTarget)
  Expression.Break(LabelTarget, Expression)
  Expression.Break(LabelTarget, Expression, Type)
  Expression.Break(LabelTarget, Type)
  Expression.Call(Expression, MethodInfo)
  Expression.Call(Expression, MethodInfo, IEnumerable<Expression>)
  Expression.Call(Expression, MethodInfo, Expression, Expression)
  Expression.Call(Expression, MethodInfo, Expression, Expression, Expression)
  Expression.Call(Expression, MethodInfo, params Expression[])
  Expression.Call(Expression, string, Type[], params Expression[])
  Expression.Call(MethodInfo, IEnumerable<Expression>)
  Expression.Call(MethodInfo, Expression)
  Expression.Call(MethodInfo, Expression, Expression)
  Expression.Call(MethodInfo, Expression, Expression, Expression)
  Expression.Call(MethodInfo, Expression, Expression, Expression, Expression)
  Expression.Call(MethodInfo, Expression, Expression, Expression, Expression, Expression)
  Expression.Call(MethodInfo, params Expression[])
  Expression.Call(Type, string, Type[], params Expression[])
  Expression.Catch(ParameterExpression, Expression)
  Expression.Catch(ParameterExpression, Expression, Expression)
  Expression.Catch(Type, Expression)
  Expression.Catch(Type, Expression, Expression)
  Expression.ClearDebugInfo(SymbolDocumentInfo)
  Expression.Coalesce(Expression, Expression)
  Expression.Coalesce(Expression, Expression, LambdaExpression)
  Expression.Condition(Expression, Expression, Expression)
  Expression.Condition(Expression, Expression, Expression, Type)
  Expression.Constant(object)
  Expression.Constant(object, Type)
  Expression.Continue(LabelTarget)
  Expression.Continue(LabelTarget, Type)
  Expression.Convert(Expression, Type)
  Expression.Convert(Expression, Type, MethodInfo)
  Expression.ConvertChecked(Expression, Type)
  Expression.ConvertChecked(Expression, Type, MethodInfo)
  Expression.DebugInfo(SymbolDocumentInfo, int, int, int, int)
  Expression.Decrement(Expression)
  Expression.Decrement(Expression, MethodInfo)
  Expression.Default(Type)
  Expression.Divide(Expression, Expression)
  Expression.Divide(Expression, Expression, MethodInfo)
  Expression.DivideAssign(Expression, Expression)
  Expression.DivideAssign(Expression, Expression, MethodInfo)
  Expression.DivideAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.Dynamic(CallSiteBinder, Type, IEnumerable<Expression>)
  Expression.Dynamic(CallSiteBinder, Type, Expression)
  Expression.Dynamic(CallSiteBinder, Type, Expression, Expression)
  Expression.Dynamic(CallSiteBinder, Type, Expression, Expression, Expression)
  Expression.Dynamic(CallSiteBinder, Type, Expression, Expression, Expression, Expression)
  Expression.Dynamic(CallSiteBinder, Type, params Expression[])
  Expression.ElementInit(MethodInfo, IEnumerable<Expression>)
  Expression.ElementInit(MethodInfo, params Expression[])
  Expression.Empty()
  Expression.Equal(Expression, Expression)
  Expression.Equal(Expression, Expression, bool, MethodInfo)
  Expression.ExclusiveOr(Expression, Expression)
  Expression.ExclusiveOr(Expression, Expression, MethodInfo)
  Expression.ExclusiveOrAssign(Expression, Expression)
  Expression.ExclusiveOrAssign(Expression, Expression, MethodInfo)
  Expression.ExclusiveOrAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.Field(Expression, FieldInfo)
  Expression.Field(Expression, string)
  Expression.Field(Expression, Type, string)
  Expression.GetActionType(params Type[])
  Expression.GetDelegateType(params Type[])
  Expression.GetFuncType(params Type[])
  Expression.Goto(LabelTarget)
  Expression.Goto(LabelTarget, Expression)
  Expression.Goto(LabelTarget, Expression, Type)
  Expression.Goto(LabelTarget, Type)
  Expression.GreaterThan(Expression, Expression)
  Expression.GreaterThan(Expression, Expression, bool, MethodInfo)
  Expression.GreaterThanOrEqual(Expression, Expression)
  Expression.GreaterThanOrEqual(Expression, Expression, bool, MethodInfo)
  Expression.IfThen(Expression, Expression)
  Expression.IfThenElse(Expression, Expression, Expression)
  Expression.Increment(Expression)
  Expression.Increment(Expression, MethodInfo)
  Expression.Invoke(Expression, IEnumerable<Expression>)
  Expression.Invoke(Expression, params Expression[])
  Expression.IsFalse(Expression)
  Expression.IsFalse(Expression, MethodInfo)
  Expression.IsTrue(Expression)
  Expression.IsTrue(Expression, MethodInfo)
  Expression.Label()
  Expression.Label(LabelTarget)
  Expression.Label(LabelTarget, Expression)
  Expression.Label(string)
  Expression.Label(Type)
  Expression.Label(Type, string)
  Expression.Lambda(Expression, bool, IEnumerable<ParameterExpression>)
  Expression.Lambda(Expression, bool, params ParameterExpression[])
  Expression.Lambda(Expression, IEnumerable<ParameterExpression>)
  Expression.Lambda(Expression, params ParameterExpression[])
  Expression.Lambda(Expression, string, bool, IEnumerable<ParameterExpression>)
  Expression.Lambda(Expression, string, IEnumerable<ParameterExpression>)
  Expression.Lambda(Type, Expression, bool, IEnumerable<ParameterExpression>)
  Expression.Lambda(Type, Expression, bool, params ParameterExpression[])
  Expression.Lambda(Type, Expression, IEnumerable<ParameterExpression>)
  Expression.Lambda(Type, Expression, params ParameterExpression[])
  Expression.Lambda(Type, Expression, string, bool, IEnumerable<ParameterExpression>)
  Expression.Lambda(Type, Expression, string, IEnumerable<ParameterExpression>)
  Expression.Lambda<TDelegate>(Expression, bool, IEnumerable<ParameterExpression>)
  Expression.Lambda<TDelegate>(Expression, bool, params ParameterExpression[])
  Expression.Lambda<TDelegate>(Expression, IEnumerable<ParameterExpression>)
  Expression.Lambda<TDelegate>(Expression, params ParameterExpression[])
  Expression.Lambda<TDelegate>(Expression, string, bool, IEnumerable<ParameterExpression>)
  Expression.Lambda<TDelegate>(Expression, string, IEnumerable<ParameterExpression>)
  Expression.LeftShift(Expression, Expression)
  Expression.LeftShift(Expression, Expression, MethodInfo)
  Expression.LeftShiftAssign(Expression, Expression)
  Expression.LeftShiftAssign(Expression, Expression, MethodInfo)
  Expression.LeftShiftAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.LessThan(Expression, Expression)
  Expression.LessThan(Expression, Expression, bool, MethodInfo)
  Expression.LessThanOrEqual(Expression, Expression)
  Expression.LessThanOrEqual(Expression, Expression, bool, MethodInfo)
  Expression.ListBind(MemberInfo, IEnumerable<ElementInit>)
  Expression.ListBind(MemberInfo, params ElementInit[])
  Expression.ListBind(MethodInfo, IEnumerable<ElementInit>)
  Expression.ListBind(MethodInfo, params ElementInit[])
  Expression.ListInit(NewExpression, IEnumerable<ElementInit>)
  Expression.ListInit(NewExpression, IEnumerable<Expression>)
  Expression.ListInit(NewExpression, params ElementInit[])
  Expression.ListInit(NewExpression, params Expression[])
  Expression.ListInit(NewExpression, MethodInfo, IEnumerable<Expression>)
  Expression.ListInit(NewExpression, MethodInfo, params Expression[])
  Expression.Loop(Expression)
  Expression.Loop(Expression, LabelTarget)
  Expression.Loop(Expression, LabelTarget, LabelTarget)
  Expression.MakeBinary(ExpressionType, Expression, Expression)
  Expression.MakeBinary(ExpressionType, Expression, Expression, bool, MethodInfo)
  Expression.MakeBinary(ExpressionType, Expression, Expression, bool, MethodInfo, LambdaExpression)
  Expression.MakeCatchBlock(Type, ParameterExpression, Expression, Expression)
  Expression.MakeDynamic(Type, CallSiteBinder, IEnumerable<Expression>)
  Expression.MakeDynamic(Type, CallSiteBinder, Expression)
  Expression.MakeDynamic(Type, CallSiteBinder, Expression, Expression)
  Expression.MakeDynamic(Type, CallSiteBinder, Expression, Expression, Expression)
  Expression.MakeDynamic(Type, CallSiteBinder, Expression, Expression, Expression, Expression)
  Expression.MakeDynamic(Type, CallSiteBinder, params Expression[])
  Expression.MakeGoto(GotoExpressionKind, LabelTarget, Expression, Type)
  Expression.MakeIndex(Expression, PropertyInfo, IEnumerable<Expression>)
  Expression.MakeMemberAccess(Expression, MemberInfo)
  Expression.MakeTry(Type, Expression, Expression, Expression, IEnumerable<CatchBlock>)
  Expression.MakeUnary(ExpressionType, Expression, Type)
  Expression.MakeUnary(ExpressionType, Expression, Type, MethodInfo)
  Expression.MemberBind(MemberInfo, IEnumerable<MemberBinding>)
  Expression.MemberBind(MemberInfo, params MemberBinding[])
  Expression.MemberBind(MethodInfo, IEnumerable<MemberBinding>)
  Expression.MemberBind(MethodInfo, params MemberBinding[])
  Expression.MemberInit(NewExpression, IEnumerable<MemberBinding>)
  Expression.MemberInit(NewExpression, params MemberBinding[])
  Expression.Modulo(Expression, Expression)
  Expression.Modulo(Expression, Expression, MethodInfo)
  Expression.ModuloAssign(Expression, Expression)
  Expression.ModuloAssign(Expression, Expression, MethodInfo)
  Expression.ModuloAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.Multiply(Expression, Expression)
  Expression.Multiply(Expression, Expression, MethodInfo)
  Expression.MultiplyAssign(Expression, Expression)
  Expression.MultiplyAssign(Expression, Expression, MethodInfo)
  Expression.MultiplyAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.MultiplyAssignChecked(Expression, Expression)
  Expression.MultiplyAssignChecked(Expression, Expression, MethodInfo)
  Expression.MultiplyAssignChecked(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.MultiplyChecked(Expression, Expression)
  Expression.MultiplyChecked(Expression, Expression, MethodInfo)
  Expression.Negate(Expression)
  Expression.Negate(Expression, MethodInfo)
  Expression.NegateChecked(Expression)
  Expression.NegateChecked(Expression, MethodInfo)
  Expression.New(ConstructorInfo)
  Expression.New(ConstructorInfo, IEnumerable<Expression>)
  Expression.New(ConstructorInfo, IEnumerable<Expression>, IEnumerable<MemberInfo>)
  Expression.New(ConstructorInfo, IEnumerable<Expression>, params MemberInfo[])
  Expression.New(ConstructorInfo, params Expression[])
  Expression.New(Type)
  Expression.NewArrayBounds(Type, IEnumerable<Expression>)
  Expression.NewArrayBounds(Type, params Expression[])
  Expression.NewArrayInit(Type, IEnumerable<Expression>)
  Expression.NewArrayInit(Type, params Expression[])
  Expression.Not(Expression)
  Expression.Not(Expression, MethodInfo)
  Expression.NotEqual(Expression, Expression)
  Expression.NotEqual(Expression, Expression, bool, MethodInfo)
  Expression.OnesComplement(Expression)
  Expression.OnesComplement(Expression, MethodInfo)
  Expression.Or(Expression, Expression)
  Expression.Or(Expression, Expression, MethodInfo)
  Expression.OrAssign(Expression, Expression)
  Expression.OrAssign(Expression, Expression, MethodInfo)
  Expression.OrAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.OrElse(Expression, Expression)
  Expression.OrElse(Expression, Expression, MethodInfo)
  Expression.Parameter(Type)
  Expression.Parameter(Type, string)
  Expression.PostDecrementAssign(Expression)
  Expression.PostDecrementAssign(Expression, MethodInfo)
  Expression.PostIncrementAssign(Expression)
  Expression.PostIncrementAssign(Expression, MethodInfo)
  Expression.Power(Expression, Expression)
  Expression.Power(Expression, Expression, MethodInfo)
  Expression.PowerAssign(Expression, Expression)
  Expression.PowerAssign(Expression, Expression, MethodInfo)
  Expression.PowerAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.PreDecrementAssign(Expression)
  Expression.PreDecrementAssign(Expression, MethodInfo)
  Expression.PreIncrementAssign(Expression)
  Expression.PreIncrementAssign(Expression, MethodInfo)
  Expression.Property(Expression, MethodInfo)
  Expression.Property(Expression, PropertyInfo)
  Expression.Property(Expression, PropertyInfo, IEnumerable<Expression>)
  Expression.Property(Expression, PropertyInfo, params Expression[])
  Expression.Property(Expression, string)
  Expression.Property(Expression, string, params Expression[])
  Expression.Property(Expression, Type, string)
  Expression.PropertyOrField(Expression, string)
  Expression.Quote(Expression)
  Expression.Reduce()
  Expression.ReduceAndCheck()
  Expression.ReduceExtensions()
  Expression.ReferenceEqual(Expression, Expression)
  Expression.ReferenceNotEqual(Expression, Expression)
  Expression.Rethrow()
  Expression.Rethrow(Type)
  Expression.Return(LabelTarget)
  Expression.Return(LabelTarget, Expression)
  Expression.Return(LabelTarget, Expression, Type)
  Expression.Return(LabelTarget, Type)
  Expression.RightShift(Expression, Expression)
  Expression.RightShift(Expression, Expression, MethodInfo)
  Expression.RightShiftAssign(Expression, Expression)
  Expression.RightShiftAssign(Expression, Expression, MethodInfo)
  Expression.RightShiftAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.RuntimeVariables(IEnumerable<ParameterExpression>)
  Expression.RuntimeVariables(params ParameterExpression[])
  Expression.Subtract(Expression, Expression)
  Expression.Subtract(Expression, Expression, MethodInfo)
  Expression.SubtractAssign(Expression, Expression)
  Expression.SubtractAssign(Expression, Expression, MethodInfo)
  Expression.SubtractAssign(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.SubtractAssignChecked(Expression, Expression)
  Expression.SubtractAssignChecked(Expression, Expression, MethodInfo)
  Expression.SubtractAssignChecked(Expression, Expression, MethodInfo, LambdaExpression)
  Expression.SubtractChecked(Expression, Expression)
  Expression.SubtractChecked(Expression, Expression, MethodInfo)
  Expression.Switch(Expression, Expression, params SwitchCase[])
  Expression.Switch(Expression, Expression, MethodInfo, IEnumerable<SwitchCase>)
  Expression.Switch(Expression, Expression, MethodInfo, params SwitchCase[])
  Expression.Switch(Expression, params SwitchCase[])
  Expression.Switch(Type, Expression, Expression, MethodInfo, IEnumerable<SwitchCase>)
  Expression.Switch(Type, Expression, Expression, MethodInfo, params SwitchCase[])
  Expression.SwitchCase(Expression, IEnumerable<Expression>)
  Expression.SwitchCase(Expression, params Expression[])
  Expression.SymbolDocument(string)
  Expression.SymbolDocument(string, Guid)
  Expression.SymbolDocument(string, Guid, Guid)
  Expression.SymbolDocument(string, Guid, Guid, Guid)
  Expression.Throw(Expression)
  Expression.Throw(Expression, Type)
  Expression.ToString()
  Expression.TryCatch(Expression, params CatchBlock[])
  Expression.TryCatchFinally(Expression, Expression, params CatchBlock[])
  Expression.TryFault(Expression, Expression)
  Expression.TryFinally(Expression, Expression)
  Expression.TryGetActionType(Type[], out Type)
  Expression.TryGetFuncType(Type[], out Type)
  Expression.TypeAs(Expression, Type)
  Expression.TypeEqual(Expression, Type)
  Expression.TypeIs(Expression, Type)
  Expression.UnaryPlus(Expression)
  Expression.UnaryPlus(Expression, MethodInfo)
  Expression.Unbox(Expression, Type)
  Expression.Variable(Type)
  Expression.Variable(Type, string)
  Expression.CanReduce
  object.Equals(object, object)
  object.GetType()
  object.MemberwiseClone()
  object.ReferenceEquals(object, object)

## Remarks

This expression is just a PgTableValuedFunctionExpression, adding the ability to provide an explicit column name for its output (`SELECT * FROM unnest(array) AS f(foo)`). This is necessary since when the column name isn't explicitly specified, it is automatically identical to the table alias (`f` above); since the table alias may get uniquified by EF, this would break queries.

See unnest for more information and examples.

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.

## Constructors

### PgUnnestExpression(string, SqlExpression, string, bool)

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 PgUnnestExpression(string alias, SqlExpression array, string columnName, bool withOrdinality = true)

#### Parameters

`alias` string
`array` SqlExpression
`columnName` string
`withOrdinality` bool

## Properties

### Array

The array to be un-nested into a table.

    public virtual SqlExpression Array { get; }

#### Property Value

SqlExpression

#### 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.

### ColumnName

The name of the column to be projected out from the `unnest` call.

    public virtual string ColumnName { get; }

#### Property Value

string

#### 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

### Clone(string?, ExpressionVisitor)

Creates a new object that is a copy of the current instance.

    public override TableExpressionBase Clone(string? alias, ExpressionVisitor cloningExpressionVisitor)

#### Parameters

`alias` string

  The alias to be used by the cloned table.

`cloningExpressionVisitor` ExpressionVisitor

  The cloning expression for further visitation of nested nodes.

#### Returns

TableExpressionBase

  A new object that is a copy of this instance.

### Update(SqlExpression)

Creates a new expression that is like this one, but using the supplied children. If all of the children are the same, it will return this expression.

    public virtual PgUnnestExpression Update(SqlExpression array)

#### Parameters

`array` SqlExpression

  The Array property of the result.

#### Returns

PgUnnestExpression

  This expression if no children changed, or an expression with the updated children.

### Update(IReadOnlyList<SqlExpression>)

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 PgUnnestExpression Update(IReadOnlyList<SqlExpression> arguments)

#### Parameters

`arguments` IReadOnlyList<SqlExpression>

#### Returns

PgUnnestExpression

### VisitChildren(ExpressionVisitor)

Reduces the node and then calls the visitor delegate on the reduced expression. The method throws an exception if the node is not reducible.

    protected override Expression VisitChildren(ExpressionVisitor visitor)

#### Parameters

`visitor` ExpressionVisitor

  An instance of Func<T, TResult>.

#### Returns

Expression

  The expression being visited, or an expression which should replace it in the tree.

### WithAlias(string)

Returns a copy of the current TableExpressionBase with the new provided alias.

    public override PgUnnestExpression WithAlias(string newAlias)

#### Parameters

`newAlias` string

  The alias to apply to the returned TableExpressionBase.

#### Returns

PgUnnestExpression

### WithColumnInfos(IReadOnlyList<ColumnInfo>)

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 PgUnnestExpression WithColumnInfos(IReadOnlyList<PgTableValuedFunctionExpression.ColumnInfo> columnInfos)

#### Parameters

`columnInfos` IReadOnlyList<PgTableValuedFunctionExpression.ColumnInfo>

#### Returns

PgUnnestExpression