Class YdbHints

Namespace

LinqToDB.DataProvider.Ydb

Assembly

linq2db.dll

SQL hints for YDB (YQL). See:

• SQL hints syntax: comments starting with "--+".
• SELECT-level hints: 'unique' / 'distinct' right after SELECT.

public static class YdbHints

Inheritance

object

YdbHints

Inherited Members

object.GetType()

object.MemberwiseClone()

object.ToString()

object.Equals(object)

object.Equals(object, object)

object.ReferenceEquals(object, object)

object.GetHashCode()

Remarks

Emits YQL hint comment lines like: --+ unique(col1 col2) --+ distinct()

Fields

Distinct

public const string Distinct = "distinct"

Field Value

string

Unique

public const string Unique = "unique"

Field Value

string

Methods

DistinctHint<TSource>(IYdbSpecificQueryable<TSource>, params string[])

[ExpressionMethod("DistinctHintImpl")]
public static IYdbSpecificQueryable<TSource> DistinctHint<TSource>(this IYdbSpecificQueryable<TSource> query, params string[] columns) where TSource : notnull

Parameters

query IYdbSpecificQueryable<TSource>

columns string[]

Returns

IYdbSpecificQueryable<TSource>

Type Parameters

TSource

DistinctHint<TSource>(IQueryable<TSource>, params string[])

[ExpressionMethod("DistinctHintQImpl")]
public static IYdbSpecificQueryable<TSource> DistinctHint<TSource>(this IQueryable<TSource> query, params string[] columns) where TSource : notnull

Parameters

query IQueryable<TSource>

columns string[]

Returns

IYdbSpecificQueryable<TSource>

Type Parameters

TSource

QueryHint<TSource>(IYdbSpecificQueryable<TSource>, string, params string[])

Generic query-hint injector for YDB/YQL.

[IsQueryable]
[Sql.QueryExtension("YDB", Sql.QueryExtensionScope.SubQueryHint, typeof(YdbHints.YdbQueryHintExtensionBuilder))]
[Sql.QueryExtension(null, Sql.QueryExtensionScope.None, typeof(NoneExtensionBuilder))]
public static IYdbSpecificQueryable<TSource> QueryHint<TSource>(this IYdbSpecificQueryable<TSource> source, string hint, params string[] values) where TSource : notnull

Parameters

source IYdbSpecificQueryable<TSource>

hint string

values string[]

Returns

IYdbSpecificQueryable<TSource>

Type Parameters

TSource

QueryHint<TSource>(IQueryable<TSource>, string, params string[])

[IsQueryable]
[Sql.QueryExtension("YDB", Sql.QueryExtensionScope.SubQueryHint, typeof(YdbHints.YdbQueryHintExtensionBuilder))]
[Sql.QueryExtension(null, Sql.QueryExtensionScope.None, typeof(NoneExtensionBuilder))]
public static IYdbSpecificQueryable<TSource> QueryHint<TSource>(this IQueryable<TSource> source, string hint, params string[] values) where TSource : notnull

Parameters

source IQueryable<TSource>

hint string

values string[]

Returns

IYdbSpecificQueryable<TSource>

Type Parameters

TSource

UniqueHint<TSource>(IYdbSpecificQueryable<TSource>, params string[])

[ExpressionMethod("UniqueHintImpl")]
public static IYdbSpecificQueryable<TSource> UniqueHint<TSource>(this IYdbSpecificQueryable<TSource> query, params string[] columns) where TSource : notnull

Parameters

query IYdbSpecificQueryable<TSource>

columns string[]

Returns

IYdbSpecificQueryable<TSource>

Type Parameters

TSource

UniqueHint<TSource>(IQueryable<TSource>, params string[])

[ExpressionMethod("UniqueHintQImpl")]
public static IYdbSpecificQueryable<TSource> UniqueHint<TSource>(this IQueryable<TSource> query, params string[] columns) where TSource : notnull

Parameters

query IQueryable<TSource>

columns string[]

Returns

IYdbSpecificQueryable<TSource>

Type Parameters

TSource