correção nos scripts

bug#15545
dev: 
qua: 

git-svn-id: http://desenvolvimento.rjconsultores.com.br/repositorio/sco/BD/FlyWay/trunk@98314 d1611594-4594-4d17-8e1d-87c2c4800839

src/db/migration/V20191017_1741__mantis15545.sql

@@ -0,0 +1,7 @@
+declare
+    object_exists exception;
+    pragma exception_init (object_exists , -01430);
+begin
+	execute immediate 'ALTER TABLE CATEGORIA_DESCUENTO MODIFY (INDCUOTANUNCALIBERAR DEFAULT 0)';
+    exception when object_exists then null;
+end;

src/db/postgresql/migration/V2019117_1741__mantis15545.sql

@@ -0,0 +1,6 @@
+DO $$
+BEGIN
+  ALTER TABLE CATEGORIA_DESCUENTO MODIFY (INDCUOTANUNCALIBERAR DEFAULT 0);
+  EXCEPTION WHEN duplicate_column THEN NULL;
+END
+$$;