SQL Anywhere: FOREACH möglich?

CREATE TABLE [dbo].[unt_log](
	[pk] UNIQUEIDENTIFIER NOT NULL,
	[fk_unt] UNIQUEIDENTIFIER NOT NULL,
	[datum] DATETIME NOT NULL,
	[benutzer] VARCHAR(20) NOT NULL,
	[spalte] VARCHAR(40) NOT NULL,
	[aktion] VARCHAR(10) NOT NULL,
	[neu] VARCHAR(80) NULL,
	[neu_datum] DATETIME NULL,
	[neu_key] UNIQUEIDENTIFIER NULL,
	[alt] VARCHAR(80) NULL,
	[alt_datum] DATETIME NULL,
	[alt_key] UNIQUEIDENTIFIER NULL
	);

ALTER TABLE [dbo].[unt_log] ADD CONSTRAINT unt_log_pk PRIMARY KEY(pk);

	IF		UPDATE(bis)
	BEGIN
		INSERT INTO unt_log(pk,fk_unt,benutzer,datum,spalte,aktion,neu,alt,neu_datum,alt_datum)
		SELECT	newid() AS pk,
				i.pk AS fk_unt,
				isnull(i.lasttrigger,i.lastuser) AS benutzer,
				getdate() AS datum,
				'unt.bis' AS spalte,  
				( CASE WHEN i.pk IS NOT NULL AND d.pk IS NOT NULL THEN	'Update'  
				  WHEN i.pk IS NOT NULL AND d.pk IS NULL THEN 'Insert' END ) AS aktion,  
				convert(CHAR(10),i.bis,104) AS neu,
				convert(CHAR(10),d.bis,104) AS alt,
				i.bis AS neu_datum,
				d.bis AS alt_datum
		FROM	INSERTED i
		FULL JOIN DELETED d ON i.pk = d.pk
		WHERE	i.bis IS NOT NULL
		AND		d.bis IS NULL
		OR		d.bis IS NOT NULL
		AND		i.bis IS NULL
		OR		i.bis != d.bis
	END