SqlParameterExpression Class
Definition
Important
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An expression that represents a parameter in a SQL tree.
[System.Runtime.CompilerServices.Nullable(0)]
public sealed class SqlParameterExpression : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpressionpublic class SqlParameterExpression : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpressionpublic sealed class SqlParameterExpression : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SqlExpression[<System.Runtime.CompilerServices.Nullable(0)>]
type SqlParameterExpression = class
inherit SqlExpressiontype SqlParameterExpression = class
inherit SqlExpressionPublic NotInheritable Class SqlParameterExpression
Inherits SqlExpressionPublic Class SqlParameterExpression
Inherits SqlExpression- Inheritance
- Attributes
Remarks
This is a simple wrapper around a ParameterExpression in the SQL tree. Instances of this type cannot be constructed by application or database provider code. If this is a problem for your application or provider, then please file an issue at github.com/dotnet/efcore.
Constructors
| Name | Description |
|---|---|
| SqlParameterExpression(String, String, Type, Boolean, Nullable<ParameterTranslationMode>, RelationalTypeMapping) |
Creates a new instance of the SqlParameterExpression class. |
| SqlParameterExpression(String, Type, Boolean, RelationalTypeMapping) |
Creates a new instance of the SqlParameterExpression class. |
| SqlParameterExpression(String, Type, RelationalTypeMapping) |
Creates a new instance of the SqlParameterExpression class. |
Properties
| Name | Description |
|---|---|
| InvariantName |
The name of the parameter as it is recorded in Parameters. |
| IsNullable |
The bool value indicating if this parameter can have null values. |
| Name |
The name of the parameter as it will be set on ParameterName and inside the SQL as a placeholder (before any additional placeholder character prefixing). |
| NodeType | (Inherited from SqlExpression) |
| TranslationMode |
How the parameter should be handled. |
| Type | (Inherited from SqlExpression) |
| TypeMapping |
The RelationalTypeMapping associated with this expression. (Inherited from SqlExpression) |
Methods
| Name | Description |
|---|---|
| ApplyTypeMapping(RelationalTypeMapping) |
Applies supplied type mapping to this expression. |
| 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. |
| Print(ExpressionPrinter) |
Creates a printable string representation of the given expression using ExpressionPrinter. (Inherited from SqlExpression) |
| 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. |
| 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. |
| VisitChildren(ExpressionVisitor) | (Inherited from SqlExpression) |
Explicit Interface Implementations
| Name | Description |
|---|---|
| IPrintableExpression.Print(ExpressionPrinter) |
Creates a printable string representation of the given expression using ExpressionPrinter. (Inherited from SqlExpression) |
