fixes bug#21091

fixes bug#21087
dev:valdir
qua:

git-svn-id: http://desenvolvimento.rjconsultores.com.br/repositorio/sco/BD/FlyWay/trunk@104536 d1611594-4594-4d17-8e1d-87c2c4800839

src/db/migration/V20201125_1432__mantis21087.sql

@@ -0,0 +1,11 @@
+declare
+    object_exists exception;
+    except_00957  exception;
+    pragma exception_init (object_exists , -01430);
+    pragma exception_init (except_00957 , -00957);
+begin
+   execute immediate 'ALTER TABLE ESTACION_SITEF MODIFY NUMEMPRESA VARCHAR2(30)'; 
+   exception 
+       when object_exists then null;
+       when except_00957 then null;
+end;

src/db/postgresql/migration/V20201125_1432__mantis21087.sql

@@ -0,0 +1,6 @@
+DO $$
+BEGIN
+  ALTER TABLE ESTACION_SITEF MODIFY NUMEMPRESA VARCHAR2(30 BYTE);
+  EXCEPTION WHEN duplicate_column THEN NULL;
+END
+$$;