diff --git a/Model/lib/dst/expression.dst b/Model/lib/dst/expression.dst
index 8469a21ba4..27ed3b38d9 100644
--- a/Model/lib/dst/expression.dst
+++ b/Model/lib/dst/expression.dst
@@ -104,7 +104,7 @@ prop=dataType
           <sql>
            <![CDATA[
 SELECT DISTINCT profile_study_id AS internal, profile_set_name AS term,
-                 decode(ps.name, '', '', ${decodeProfileSet}  '${datasetDisplayName}') as display
+                 CASE WHEN ps.name = '' THEN '' ELSE ${decodeProfileSet}  '${datasetDisplayName}' END as display
 FROM apidbtuning.profileType
 WHERE dataset_name = '${datasetName}'
 AND profile_set_name not in ( ${excludedProfileSetsList})
@@ -608,10 +608,10 @@ prop=dataType
            <![CDATA[
 	      SELECT  protocol_app_node_id as internal,
 	      CASE WHEN  ('$$channel$$' ='channel1') THEN
-                decode(protocol_app_node_name, '', '', ${channelOnePctSampleDecode}
-                       protocol_app_node_name)
-		ELSE decode(protocol_app_node_name, '', '', ${channelTwoPctSampleDecode}
-                       protocol_app_node_name)
+                CASE WHEN protocol_app_node_name = '' THEN '' ELSE ${channelOnePctSampleDecode}
+                       protocol_app_node_name END
+		ELSE CASE WHEN protocol_app_node_name = '' THEN '' ELSE ${channelTwoPctSampleDecode}
+                       protocol_app_node_name END
 		    END as term
 	      FROM apidbtuning.ProfileSamples ps
 	      WHERE ps.study_id = $$profileset_generic$$