Melhorias na auditoria do MD

bug#11130
dev:trevezani
qua:trevezani

git-svn-id: http://desenvolvimento.rjconsultores.com.br/repositorio/sco/BD/FlyWay/trunk@82605 d1611594-4594-4d17-8e1d-87c2c4800839

src/db/migration/V20180613_1650__mantis11130.sql

@@ -0,0 +1,7 @@
+declare
+    column_exists exception;
+    pragma exception_init (column_exists , -01430);
+begin
+    execute immediate 'ALTER TABLE MD_LOG ADD VERSAO NUMBER(8)';
+    exception when column_exists then null;
+end;