This is a SQL statement that is executed before each Notifier poll. Typical uses are to detect data change in the database and create push requests that are later fetched with the request_cursor.
The statement is executed in a standalone transaction.
This property is optional. The default is null.
This example creates a push request for a Notifier called Notifier A. It uses a SQL statement that inserts rows into a table called PushRequest. Each row in this table represents a message to send to an address. The WHERE clause determines what push requests are inserted into the PushRequest table.
To use the stored procedure ml_add_property with a SQL Anywhere consolidated database, run the following command:
ml_add_property( 'SIS', 'Notifier(Notifier A)', 'begin_connection', 'INSERT INTO PushRequest ( gateway, mluser, subject, content ) SELECT ''MyGateway'', DISTINCT mluser, ''sync'', stream_param FROM MLUserExtra, mluser_union, Dealer WHERE MLUserExtra.mluser = mluser_union.name AND( push_sync_status = ''waiting for request'' OR datediff( hour, last_status_change, now() ) > 12 ) AND ( mluser_union.publication_name is NULL OR mluser_union.publication_name =''FullSync'' ) AND Dealer.last_modified > mluser_union.last_sync_time' );
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