ExistsExpression Class
Definition
Important
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An expression that represents an EXISTS operation in a SQL tree.
This type is typically used by database providers (and other extensions). It is generally not used in application code.
public class ExistsExpression : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpressiontype ExistsExpression = class
inherit SqlExpressionPublic Class ExistsExpression
Inherits SqlExpression- Inheritance
Constructors
| ExistsExpression(SelectExpression, Boolean, RelationalTypeMapping) |
Creates a new instance of the ExistsExpression class. |
| ExistsExpression(SelectExpression, RelationalTypeMapping) |
Creates a new instance of the ExistsExpression class. |
Properties
| IsNegated |
The value indicating if the existence check is negated. |
| NodeType | (Inherited from SqlExpression) |
| Subquery |
The subquery for which to check for element existence. |
| Type | (Inherited from SqlExpression) |
| TypeMapping |
The RelationalTypeMapping associated with this expression. (Inherited from SqlExpression) |
Methods
| Equals(Object) | System.Linq.Expressions.Expression.Equals(System.Object) |
| GetHashCode() | System.Linq.Expressions.Expression.GetHashCode |
| Print(ExpressionPrinter) |
Creates a printable string representation of the given expression using ExpressionPrinter. |
| Quote() | System.Linq.Expressions.Expression.Quote |
| Quote() |
Quotes the expression; that is, returns an expression that, when evaluated, would construct an expression identical to this one. Used to generate code for precompiled queries, which reconstructs this expression. (Inherited from SqlExpression) |
| Update(SelectExpression) |
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. |
| 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. |
Explicit Interface Implementations
| IPrintableExpression.Print(ExpressionPrinter) |
Creates a printable string representation of the given expression using ExpressionPrinter. (Inherited from SqlExpression) |
Applies to
Entity Framework