Class SelectQuery

Namespace

LinqToDB.Internal.SqlQuery

Assembly

linq2db.dll

public sealed class SelectQuery : SqlExpressionBase, ISqlTableSource, ISqlExpression, IQueryElement, IEquatable<ISqlExpression>

Inheritance

object

QueryElement

SqlExpressionBase

SelectQuery

Implements

ISqlTableSource

ISqlExpression

IQueryElement

IEquatable<ISqlExpression>

Inherited Members

SqlExpressionBase.Equals(ISqlExpression)

QueryElement.ReferenceComparer

Extension Methods

QueryHelper.CanBeEvaluated(IQueryElement, EvaluationContext)

QueryHelper.CanBeEvaluated(IQueryElement, bool)

QueryHelper.EvaluateBoolExpression(IQueryElement, EvaluationContext, bool?)

QueryHelper.EvaluateExpression(IQueryElement, EvaluationContext)

QueryHelper.HasElement(IQueryElement, IQueryElement)

QueryHelper.HasParameter(IQueryElement)

QueryHelper.HasQueryParameter(IQueryElement)

QueryHelper.IsMutable(IQueryElement)

QueryHelper.TryEvaluateExpression(IQueryElement, EvaluationContext, out object?)

QueryHelper.TryEvaluateExpressionForServer(IQueryElement, EvaluationContext, out object?)

QueryVisitorExtensions.Find(IQueryElement?, QueryElementType)

QueryVisitorExtensions.Find(IQueryElement?, Func<IQueryElement, bool>)

QueryVisitorExtensions.FindExcept<TContext>(IQueryElement?, TContext, IQueryElement, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Find<TContext>(IQueryElement?, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Visit(IQueryElement, Action<IQueryElement>)

QueryVisitorExtensions.VisitAll(IQueryElement, Action<IQueryElement>)

QueryVisitorExtensions.VisitAll<TContext>(IQueryElement, TContext, Action<TContext, IQueryElement>)

QueryVisitorExtensions.VisitParentFirst(IQueryElement, Func<IQueryElement, bool>)

QueryVisitorExtensions.VisitParentFirstAll(IQueryElement, Func<IQueryElement, bool>)

QueryVisitorExtensions.VisitParentFirstAll<TContext>(IQueryElement, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.VisitParentFirst<TContext>(IQueryElement, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Visit<TContext>(IQueryElement, TContext, Action<TContext, IQueryElement>)

QueryHelper.CanBeNullableOrUnknown(ISqlExpression, NullabilityContext, bool)

QueryHelper.IsPredicate(ISqlExpression)

QueryHelper.ShouldCheckForNull(ISqlExpression, NullabilityContext)

ISqlExpressionExtensions.AreEqual(ISqlExpression?, ISqlExpression?, Func<ISqlExpression, ISqlExpression, bool>)

JoinExtensions.CrossApply(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.CrossApply(ISqlTableSource, string, params SqlFromClause.Join[])

JoinExtensions.FullJoin(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.FullJoin(ISqlTableSource, string, params SqlFromClause.Join[])

JoinExtensions.InnerJoin(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.InnerJoin(ISqlTableSource, string, params SqlFromClause.Join[])

JoinExtensions.LeftJoin(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.LeftJoin(ISqlTableSource, string, params SqlFromClause.Join[])

JoinExtensions.OuterApply(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.OuterApply(ISqlTableSource, string, params SqlFromClause.Join[])

JoinExtensions.RightJoin(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.RightJoin(ISqlTableSource, string, params SqlFromClause.Join[])

JoinExtensions.WeakInnerJoin(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.WeakInnerJoin(ISqlTableSource, string, params SqlFromClause.Join[])

JoinExtensions.WeakLeftJoin(ISqlTableSource, params SqlFromClause.Join[])

JoinExtensions.WeakLeftJoin(ISqlTableSource, string, params SqlFromClause.Join[])

SqlExtensions.CreateCount(ISqlTableSource, MappingSchema)

QueryVisitorExtensions.Clone<T>(T?)

QueryVisitorExtensions.Clone<T>(T?, Dictionary<IQueryElement, IQueryElement>)

QueryVisitorExtensions.Clone<T>(T?, Func<IQueryElement, bool>)

QueryVisitorExtensions.Clone<T, TContext>(T?, TContext, Dictionary<IQueryElement, IQueryElement>, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.Clone<T, TContext>(T?, TContext, Func<TContext, IQueryElement, bool>)

QueryVisitorExtensions.ConvertAll<T>(T, bool, Func<SqlQueryConvertVisitor<object?>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.ConvertAll<TContext, T>(T, TContext, bool, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.ConvertAll<TContext, T>(T, TContext, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<T>(T, Func<SqlQueryConvertVisitor<object?>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<T>(T, Func<SqlQueryConvertVisitor<object?>, IQueryElement, IQueryElement>, bool)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, bool, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, bool, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>, bool)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>)

QueryVisitorExtensions.Convert<TContext, T>(T, TContext, Func<SqlQueryConvertVisitor<TContext>, IQueryElement, IQueryElement>, bool)

QueryVisitorExtensions.Replace<T>(T, IDictionary<IQueryElement, IQueryElement>, params IQueryElement[])

Sql.IsDistinctFrom<T>(T, T)

Sql.IsNotDistinctFrom<T>(T, T)

SqlExtensions.In<T>(T, T, T)

SqlExtensions.In<T>(T, T, T, T)

SqlExtensions.In<T>(T, params T[])

SqlExtensions.In<T>(T, IEnumerable<T>)

SqlExtensions.In<T>(T, IQueryable<T>)

SqlExtensions.NotIn<T>(T, T, T)

SqlExtensions.NotIn<T>(T, T, T, T)

SqlExtensions.NotIn<T>(T, params T[])

SqlExtensions.NotIn<T>(T, IEnumerable<T>)

SqlExtensions.NotIn<T>(T, IQueryable<T>)

Constructors

SelectQuery()

public SelectQuery()

Properties

All

public SqlField All { get; }

Property Value

SqlField

DoNotRemove

Gets or sets flag when sub-query can be removed during optimization.

public bool DoNotRemove { get; set; }

Property Value

bool

DoNotSetAliases

public bool DoNotSetAliases { get; set; }

Property Value

bool

ElementType

AST node type.

public override QueryElementType ElementType { get; }

Property Value

QueryElementType

From

public SqlFromClause From { get; }

Property Value

SqlFromClause

GroupBy

public SqlGroupByClause GroupBy { get; }

Property Value

SqlGroupByClause

HasSetOperators

public bool HasSetOperators { get; }

Property Value

bool

HasUniqueKeys

public bool HasUniqueKeys { get; }

Property Value

bool

Having

public SqlHavingClause Having { get; }

Property Value

SqlHavingClause

IsParameterDependent

public bool IsParameterDependent { get; set; }

Property Value

bool

OrderBy

public SqlOrderByClause OrderBy { get; }

Property Value

SqlOrderByClause

Precedence

public override int Precedence { get; }

Property Value

int

Properties

public List<object> Properties { get; }

Property Value

List<object>

QueryName

public string? QueryName { get; set; }

Property Value

string

Select

public SqlSelectClause Select { get; }

Property Value

SqlSelectClause

SetOperators

public List<SqlSetOperator> SetOperators { get; }

Property Value

List<SqlSetOperator>

SourceID

public int SourceID { get; }

Property Value

int

SqlQueryExtensions

public List<SqlQueryExtension>? SqlQueryExtensions { get; set; }

Property Value

List<SqlQueryExtension>

SqlTableType

public SqlTableType SqlTableType { get; }

Property Value

SqlTableType

SqlText

public string SqlText { get; }

Property Value

string

SystemType

public override Type? SystemType { get; }

Property Value

Type

UniqueKeys

Contains list of columns that build unique key for this sub-query. Used in JoinOptimizer for safely removing sub-query from resulting SQL.

public List<ISqlExpression[]> UniqueKeys { get; }

Property Value

List<ISqlExpression[]>

Where

public SqlWhereClause Where { get; }

Property Value

SqlWhereClause

Methods

Accept(QueryElementVisitor)

Visitor support.

public override IQueryElement Accept(QueryElementVisitor visitor)

Parameters

visitor QueryElementVisitor

Returns

IQueryElement

AddUnion(SelectQuery, bool)

public void AddUnion(SelectQuery union, bool isAll)

Parameters

union SelectQuery

isAll bool

CanBeNullable(NullabilityContext)

public override bool CanBeNullable(NullabilityContext nullability)

Parameters

nullability NullabilityContext

Returns

bool

Cleanup()

public void Cleanup()

CloneQuery()

public SelectQuery CloneQuery()

Returns

SelectQuery

Equals(ISqlExpression, Func<ISqlExpression, ISqlExpression, bool>)

public override bool Equals(ISqlExpression other, Func<ISqlExpression, ISqlExpression, bool> comparer)

Parameters

other ISqlExpression

comparer Func<ISqlExpression, ISqlExpression, bool>

Returns

bool

ForEachTable<TContext>(TContext, Action<TContext, SqlTableSource>, HashSet<SelectQuery>)

public void ForEachTable<TContext>(TContext context, Action<TContext, SqlTableSource> action, HashSet<SelectQuery> visitedQueries)

Parameters

context TContext

action Action<TContext, SqlTableSource>

visitedQueries HashSet<SelectQuery>

Type Parameters

TContext

GetElementHashCode()

public override int GetElementHashCode()

Returns

int

GetKeys(bool)

public IList<ISqlExpression>? GetKeys(bool allIfEmpty)

Parameters

allIfEmpty bool

Returns

IList<ISqlExpression>

GetTableSource(ISqlTableSource)

public ISqlTableSource? GetTableSource(ISqlTableSource table)

Parameters

table ISqlTableSource

Returns

ISqlTableSource

IsLimitedToOneRecord()

public bool IsLimitedToOneRecord()

Returns

bool

ToString()

Returns a string that represents the current object.

public override string ToString()

Returns

string

A string that represents the current object.

ToString(QueryElementTextWriter)

Generates debug text representation of AST node.

public override QueryElementTextWriter ToString(QueryElementTextWriter writer)

Parameters

writer QueryElementTextWriter

Returns

QueryElementTextWriter