Melhorias no controle da versão que gerou o MD

git-svn-id: http://desenvolvimento.rjconsultores.com.br/repositorio/sco/BD/FlyWay/trunk@78054 d1611594-4594-4d17-8e1d-87c2c4800839

src/db/migration/V20180116_1100__MDVersion.sql

@@ -0,0 +1,25 @@
+declare
+    column_exists exception;
+    pragma exception_init (column_exists , -01430);
+begin
+    execute immediate 'ALTER TABLE MD_TOTALIZADOR ADD VERSAO NUMBER(8)';
+    exception when column_exists then null;
+end;
+/
+
+declare
+    column_exists exception;
+    pragma exception_init (column_exists , -01430);
+begin
+    execute immediate 'ALTER TABLE MD_RESUMO_ECF ADD VERSAO NUMBER(8)';
+    exception when column_exists then null;
+end;
+/
+
+declare
+    column_exists exception;
+    pragma exception_init (column_exists , -01430);
+begin
+    execute immediate 'ALTER TABLE MD_DOCUMENTO ADD VERSAO NUMBER(8)';
+    exception when column_exists then null;
+end;