SelectExpression.AddLeftOuterJoin 方法

參考

定義

命名空間:: Microsoft.EntityFrameworkCore.Query.Expressions

組件:: Microsoft.EntityFrameworkCore.Relational.dll

套件:: Microsoft.EntityFrameworkCore.Relational v1.0.6

套件:: Microsoft.EntityFrameworkCore.Relational v1.1.6

套件:: Microsoft.EntityFrameworkCore.Relational v2.0.3

套件:: Microsoft.EntityFrameworkCore.Relational v2.1.11

套件:: Microsoft.EntityFrameworkCore.Relational v2.2.6

重要

部分資訊涉及發行前產品，在發行之前可能會有大幅修改。 Microsoft 對此處提供的資訊，不做任何明確或隱含的瑕疵擔保。

多載

AddLeftOuterJoin(TableExpressionBase)	將 SQL LEFT OUTER JOIN 新增至這個 SelectExpression。
AddLeftOuterJoin(TableExpressionBase, IEnumerable<Expression>)	將 SQL LEFT OUTER JOIN 新增至這個 SelectExpression。

AddLeftOuterJoin(TableExpressionBase)

將 SQL LEFT OUTER JOIN 新增至這個 SelectExpression。

public virtual Microsoft.EntityFrameworkCore.Query.Expressions.JoinExpressionBase AddLeftOuterJoin (Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase tableExpression);

public virtual Microsoft.EntityFrameworkCore.Query.Expressions.PredicateJoinExpressionBase AddLeftOuterJoin (Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase tableExpression);

abstract member AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase -> Microsoft.EntityFrameworkCore.Query.Expressions.JoinExpressionBase
override this.AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase -> Microsoft.EntityFrameworkCore.Query.Expressions.JoinExpressionBase

abstract member AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase -> Microsoft.EntityFrameworkCore.Query.Expressions.PredicateJoinExpressionBase
override this.AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase -> Microsoft.EntityFrameworkCore.Query.Expressions.PredicateJoinExpressionBase

Public Overridable Function AddLeftOuterJoin (tableExpression As TableExpressionBase) As JoinExpressionBase

Public Overridable Function AddLeftOuterJoin (tableExpression As TableExpressionBase) As PredicateJoinExpressionBase

參數

tableExpression: TableExpressionBase

目標資料表運算式。

傳回

JoinExpressionBase

PredicateJoinExpressionBase

適用於

AddLeftOuterJoin(TableExpressionBase, IEnumerable<Expression>)

將 SQL LEFT OUTER JOIN 新增至這個 SelectExpression。

public virtual Microsoft.EntityFrameworkCore.Query.Expressions.JoinExpressionBase AddLeftOuterJoin (Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase tableExpression, System.Collections.Generic.IEnumerable<System.Linq.Expressions.Expression> projection);

public virtual Microsoft.EntityFrameworkCore.Query.Expressions.PredicateJoinExpressionBase AddLeftOuterJoin (Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase tableExpression, System.Collections.Generic.IEnumerable<System.Linq.Expressions.Expression> projection);

abstract member AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase * seq<System.Linq.Expressions.Expression> -> Microsoft.EntityFrameworkCore.Query.Expressions.JoinExpressionBase
override this.AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase * seq<System.Linq.Expressions.Expression> -> Microsoft.EntityFrameworkCore.Query.Expressions.JoinExpressionBase

abstract member AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase * seq<System.Linq.Expressions.Expression> -> Microsoft.EntityFrameworkCore.Query.Expressions.PredicateJoinExpressionBase
override this.AddLeftOuterJoin : Microsoft.EntityFrameworkCore.Query.Expressions.TableExpressionBase * seq<System.Linq.Expressions.Expression> -> Microsoft.EntityFrameworkCore.Query.Expressions.PredicateJoinExpressionBase

Public Overridable Function AddLeftOuterJoin (tableExpression As TableExpressionBase, projection As IEnumerable(Of Expression)) As JoinExpressionBase

Public Overridable Function AddLeftOuterJoin (tableExpression As TableExpressionBase, projection As IEnumerable(Of Expression)) As PredicateJoinExpressionBase