Interface ISelectFromExpression<T1>

Namespace: FreeSql
Assembly: FreeSql.dll
Syntax
public interface ISelectFromExpression<T1>
Type Parameters
Name Description
T1

Methods

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InnerJoin(Expression<Func<T1, Boolean>>)

Declaration
ISelectFromExpression<T1> InnerJoin(Expression<Func<T1, bool>> exp)
Parameters
Type Name Description
System.Linq.Expressions.Expression<System.Func<T1, System.Boolean>> exp
Returns
Type Description
ISelectFromExpression<T1>
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LeftJoin(Expression<Func<T1, Boolean>>)

Declaration
ISelectFromExpression<T1> LeftJoin(Expression<Func<T1, bool>> exp)
Parameters
Type Name Description
System.Linq.Expressions.Expression<System.Func<T1, System.Boolean>> exp
Returns
Type Description
ISelectFromExpression<T1>
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OrderBy<TMember>(Expression<Func<T1, TMember>>)

按列排序，OrderBy(a => a.Time)

Declaration
ISelectFromExpression<T1> OrderBy<TMember>(Expression<Func<T1, TMember>> column)
Parameters
Type Name Description
System.Linq.Expressions.Expression<System.Func<T1, TMember>> column
Returns
Type Description
ISelectFromExpression<T1>
Type Parameters
Name Description
TMember
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OrderByDescending<TMember>(Expression<Func<T1, TMember>>)

按列倒向排序，OrderByDescending(a => a.Time)

Declaration
ISelectFromExpression<T1> OrderByDescending<TMember>(Expression<Func<T1, TMember>> column)
Parameters
Type Name Description
System.Linq.Expressions.Expression<System.Func<T1, TMember>> column

列
Returns
Type Description
ISelectFromExpression<T1>
Type Parameters
Name Description
TMember
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RightJoin(Expression<Func<T1, Boolean>>)

Declaration
ISelectFromExpression<T1> RightJoin(Expression<Func<T1, bool>> exp)
Parameters
Type Name Description
System.Linq.Expressions.Expression<System.Func<T1, System.Boolean>> exp
Returns
Type Description
ISelectFromExpression<T1>
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Where(Expression<Func<T1, Boolean>>)

查询条件，Where(a => a.Id > 10)，支持导航对象查询，Where(a => a.Author.Email == "2881099@qq.com&quot;)

Declaration
ISelectFromExpression<T1> Where(Expression<Func<T1, bool>> exp)
Parameters
Type Name Description
System.Linq.Expressions.Expression<System.Func<T1, System.Boolean>> exp

lambda表达式
Returns
Type Description
ISelectFromExpression<T1>
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WhereIf(Boolean, Expression<Func<T1, Boolean>>)

查询条件，Where(true, a => a.Id > 10)，支导航对象查询，Where(true, a => a.Author.Email == "2881099@qq.com&quot;)

Declaration
ISelectFromExpression<T1> WhereIf(bool condition, Expression<Func<T1, bool>> exp)
Parameters
Type Name Description
System.Boolean condition

true 时生效
System.Linq.Expressions.Expression<System.Func<T1, System.Boolean>> exp

lambda表达式
Returns
Type Description
ISelectFromExpression<T1>