EVENT_CONDITION function [System]

To specify when an event handler is triggered.

EVENT_CONDITION ( condition-name )

condition-name The condition triggering the event. The possible values are preset in the database, and are case-insensitive. Each condition is valid only for certain event types. Table 4-20 lists the conditions and the events for which they are valid.

**Table 4-20: Valid conditions for events**
Condition name	Units	Valid for	Comment
DBFreePercent	N/A	DBDiskSpace	DBDiskSpace shows free space in the system database file (.db file), not the IQ store.
DBFreeSpace	Megabytes	DBDiskSpace
DBSize	Megabytes	GrowDB
ErrorNumber	N/A	RAISERROR
IdleTime	Seconds	ServerIdle
Interval	Seconds	All	Time since handler last executed.
LogFreePercent	N/A	LogDiskSpace
LogFreeSpace	Megabytes	LogDiskSpace
LogSize	Megabytes	GrowLog
RemainingValues	Integer	GlobalAutoincrement	The number of remaining values.
TempFreePercent	N/A	TempDiskSpace	TempDiskSpace shows free space in the system temporary file (pointed to by TEMP or IQTMP15 environment variable), not the IQ temporary store.
TempFreeSpace	Megabytes	TempDiskSpace
TempSize	Megabytes	GrowTemp

The following event definition uses the EVENT_CONDITION function:

create event LogNotifier
type LogDiskSpace
where event_condition( 'LogFreePercent' ) < 50
handler
begin
	message 'LogNotifier message'
end