fix: fetching conditional.

Author: DenzelCode

src/main/java/com/code/advancedsql/query/ExecuteQuery.java

@@ -33,9 +33,7 @@ public Map<String, Object> fetch() throws SQLException {
 
         ResultSet resultSet = this.execute();
 
-        if (resultSet == null) return null;
-
-        resultSet.next();
+        if (resultSet == null || !resultSet.next()) return null;
 
         ResultSetMetaData metaData = resultSet.getMetaData();
 

src/main/java/com/code/advancedsql/table/Table.java

@@ -26,9 +26,11 @@ public boolean exists() throws SQLException {
 
         ResultSet tables = metaData.getTables(null, null, this.name, null);
 
+        boolean next = tables.next();
+
         String name = tables.getString("TABLE_NAME");
 
-        return tables.next() && name != null && name.equals(this.name);
+        return next && name != null && name.equals(this.name);
     }
 
     @Override