Merge pull request #897 from geraldosm/master

fix: OracleGrammar::compileDropAllTables method to ignore secondary objects.

src/Oci8/Schema/Grammars/OracleGrammar.php

@@ -377,7 +377,7 @@ public function compileDrop(Blueprint $blueprint, Fluent $command)
     public function compileDropAllTables()
     {
         return 'BEGIN
-            FOR c IN (SELECT table_name FROM user_tables) LOOP
+            FOR c IN (SELECT table_name FROM user_tables WHERE secondary = \'N\') LOOP
             EXECUTE IMMEDIATE (\'DROP TABLE "\' || c.table_name || \'" CASCADE CONSTRAINTS\');
             END LOOP;