diff --git a/snippets/db/dot_parser.js b/snippets/db/dot_parser.js
index 985ac74..994d245 100644
--- a/snippets/db/dot_parser.js
+++ b/snippets/db/dot_parser.js
@@ -59,6 +59,8 @@ function get_table_info (str) {
     if (data.length > 0)
       col.type = get_type (data.shift ());
 
+    if (typeof col.type === 'undefined')
+      console.error (`column type is undefined: ${col.name} table: ${name}`);
 
     columns.push (col);
   }