MarcosZyk commented on code in PR #11742:
URL: https://github.com/apache/iotdb/pull/11742#discussion_r1430840829


##########
iotdb-core/datanode/src/main/java/org/apache/iotdb/db/queryengine/plan/parser/ASTVisitor.java:
##########
@@ -3313,6 +3314,12 @@ public Statement 
visitCreateSchemaTemplate(IoTDBSqlParser.CreateSchemaTemplateCo
       List<CompressionType> compressors = new ArrayList<>();
       for (IoTDBSqlParser.TemplateMeasurementClauseContext 
templateClauseContext :
           ctx.templateMeasurementClause()) {
+        if (templateClauseContext
+            .nodeNameWithoutWildcard()
+            .getText()
+            .equalsIgnoreCase(STRING_NULL)) {
+          throw new SemanticException("Device Template: measurement's name can 
not be 'null'.");

Review Comment:
   Refactor the error msg to "The name of a measurement in schema template 
shall not be null."



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