Ahead with the improvements to the comparison algorithm.

Added support internally to forge CASE statements, used only by
--is-dba query at the moment.
Allow DDL, DML (INSERT, UPDATE, etc.) from user in SQL query and
SQL shell.
Minor code adjustments.

lib/parse/queriesfile.py

@@ -107,6 +107,10 @@ class queriesHandler(ContentHandler):
             data = sanitizeStr(attrs.get("query"))
             self.__queries.substring = data
 
+        elif name == "case":
+            data = sanitizeStr(attrs.get("query"))
+            self.__queries.case = data
+
         elif name == "inference":
             data = sanitizeStr(attrs.get("query"))
             self.__queries.inference = data