CqlQueryExtensionsUpdateIfExistsTSource Method

Returns a representation of a UPDATE ... IF EXISTS cql statement, for Lightweight Transactions support.

Namespace: Cassandra.Data.Linq
Assembly: Cassandra (in Cassandra.dll) Version: 3.11.0

Syntax

public static CqlConditionalCommand<TSource> UpdateIfExists<TSource>(
	this CqlQuery<TSource> source
)

In Visual Basic and C#, you can call this method as an instance method on any object of type CqlQueryTSource. When you use instance method syntax to call this method, omit the first parameter. For more information, see Extension Methods (Visual Basic) or Extension Methods (C# Programming Guide).

CqlQueryExtensionsAddLanguageSpecificTextSet("LST31E13903_0?cpp=::|nu=.");UpdateIfExistsAddLanguageSpecificTextSet("LST31E13903_1?cs=&lt;|vb=(Of |cpp=&lt;|fs=&lt;'|nu=(");TSourceAddLanguageSpecificTextSet("LST31E13903_2?cs=&gt;|vb=)|cpp=&gt;|fs=&gt;|nu=)"); Method