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NSEventWrite<EventClassName> (Transact-SQL)

SQL Server 2005

Submits one event to the events table for the event class. You must use NSEventBeginBatchEventClassName to open a new batch and NSEventFlushBatchEventClassName to close the batch. You can submit multiple events before closing the batch.


[ schema_name . ] NSEventWriteEventClassName
    [ @EventBatchId = ] event_batch_ID ,
    [ @event_class_field_name = ] event_class_field_value [, ...n]
[ @EventBatchId = ] event_ batch_ID

Is the ID of the event batch for the event. The event batch ID number must exist in the event batches table. event_batch_ID is bigint and has no default value.

[ @event_class_field_name = ] event_class_field_value

Provides a name/value pair for an event class field. One event_class_field_name and event_class_field_value pair can be supplied for each column in the event table. If the column has a default value or accepts NULL, the name/value pair is not required.

0 (success) or 1 (failure)

Microsoft SQL Server Notification Services creates the NSEventWriteEventClassName stored procedure in the application database when you create the instance. When you update the application, Notification Services recompiles the stored procedure.

This stored procedure is in the application's schema, which is specified by the SchemaName element of the application definition file (ADF). If no schema name is provided, the default schema is dbo.

To submit individual events to an application using Transact-SQL, use NSEventBeginBatchEventClassName to open the batch, NSEventWriteEventClassName to write individual events, and NSEventFlushBatchEventClassName to close the event batch.

To use a query to obtain a set of events and then submit them to an application, use NSEventSubmitBatchEventClassName.

Execute permissions default to members of the NSEventProvider and NSRunService database roles, the db_owner fixed database role, and the sysadmin fixed server role.

The following example shows how to begin an event batch, write one event, and then close the event batch. The event provider for the event batch is StockEP and the event batch ID number is returned in the @BatchID output parameter.

The application uses the default SchemaName settings, which places all application objects in the dbo schema.

DECLARE @BatchID bigint;
EXEC dbo.NSEventBeginBatchStockEvents N'StockEP', @BatchID OUTPUT;
EXEC dbo.NSEventWriteStockEvents
   @EventBatchId=@BatchID,
   @StockSymbol=N'AWKS',
   @StockPrice=68.14;
EXEC dbo.NSEventFlushBatchStockEvents @BatchID;
SELECT @BatchID 'Event Batch';

This example assumes that you are using SQL Server Management Studio, because the event batch ID is returned in the SELECT statement so you can see which event batch was created.

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