RelationalQueryableMethodTranslatingExpressionVisitor.IsValidSelectExpressionForExecuteDelete Method
Definition
Important
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Overloads
| IsValidSelectExpressionForExecuteDelete(SelectExpression, EntityShaperExpression, TableExpression) |
Checks weather the current select expression can be used as-is for execute a delete operation, or whether it must be pushed down into a subquery. |
| IsValidSelectExpressionForExecuteDelete(SelectExpression, StructuralTypeShaperExpression, TableExpression) |
Checks weather the current select expression can be used as-is for executing a delete operation, or whether it must be pushed down into a subquery. |
IsValidSelectExpressionForExecuteDelete(SelectExpression, EntityShaperExpression, TableExpression)
Checks weather the current select expression can be used as-is for execute a delete operation, or whether it must be pushed down into a subquery.
protected virtual bool IsValidSelectExpressionForExecuteDelete (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression selectExpression, Microsoft.EntityFrameworkCore.Query.EntityShaperExpression entityShaperExpression, out Microsoft.EntityFrameworkCore.Query.SqlExpressions.TableExpression? tableExpression);abstract member IsValidSelectExpressionForExecuteDelete : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * Microsoft.EntityFrameworkCore.Query.EntityShaperExpression * TableExpression -> bool
override this.IsValidSelectExpressionForExecuteDelete : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * Microsoft.EntityFrameworkCore.Query.EntityShaperExpression * TableExpression -> boolProtected Overridable Function IsValidSelectExpressionForExecuteDelete (selectExpression As SelectExpression, entityShaperExpression As EntityShaperExpression, ByRef tableExpression As TableExpression) As BooleanParameters
- selectExpression
- SelectExpression
The select expression to validate.
- entityShaperExpression
- EntityShaperExpression
The entity shaper expression on which the delete operation is being applied.
- tableExpression
- TableExpression
The table expression from which rows are being deleted.
Returns
Returns true if the current select expression can be used for delete as-is, false otherwise.
Remarks
By default, only single-table select expressions are supported, and optionally with a predicate.
Providers can override this to allow more select expression features to be supported without pushing down into a subquery. When doing this, VisitDelete must also be overridden in the provider's QuerySqlGenerator to add SQL generation support for the feature.
Applies to
IsValidSelectExpressionForExecuteDelete(SelectExpression, StructuralTypeShaperExpression, TableExpression)
Checks weather the current select expression can be used as-is for executing a delete operation, or whether it must be pushed down into a subquery.
protected virtual bool IsValidSelectExpressionForExecuteDelete (Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression selectExpression, Microsoft.EntityFrameworkCore.Query.StructuralTypeShaperExpression shaper, out Microsoft.EntityFrameworkCore.Query.SqlExpressions.TableExpression? tableExpression);abstract member IsValidSelectExpressionForExecuteDelete : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * Microsoft.EntityFrameworkCore.Query.StructuralTypeShaperExpression * TableExpression -> bool
override this.IsValidSelectExpressionForExecuteDelete : Microsoft.EntityFrameworkCore.Query.SqlExpressions.SelectExpression * Microsoft.EntityFrameworkCore.Query.StructuralTypeShaperExpression * TableExpression -> boolProtected Overridable Function IsValidSelectExpressionForExecuteDelete (selectExpression As SelectExpression, shaper As StructuralTypeShaperExpression, ByRef tableExpression As TableExpression) As BooleanParameters
- selectExpression
- SelectExpression
The select expression to validate.
The structural type shaper expression on which the delete operation is being applied.
- tableExpression
- TableExpression
The table expression from which rows are being deleted.
Returns
Returns true if the current select expression can be used for delete as-is, false otherwise.
Remarks
By default, only single-table select expressions are supported, and optionally with a predicate.
Providers can override this to allow more select expression features to be supported without pushing down into a subquery. When doing this, VisitDelete must also be overridden in the provider's QuerySqlGenerator to add SQL generation support for the feature.
Applies to
Entity Framework
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