IF NOT EXISTS (SELECT * FROM SYS.COLUMNS WHERE NAME = 'CRITICA' AND OBJECT_ID = OBJECT_ID('PG_FORN_INTEGRACAO_ARQ_FALHA'))
BEGIN
ALTER TABLE dbo.PG_FORN_INTEGRACAO_ARQ_FALHA ADD
	CRITICA VARCHAR(MAX) CONSTRAINT DF_PG_FORN_INTEGRACAO_ARQ_FALHA_CRITICA DEFAULT ''
END