pengzhiwei2018 commented on a change in pull request #1138: [CALCITE-1581] UDTF 
like in hive
URL: https://github.com/apache/calcite/pull/1138#discussion_r314568528
 
 

 ##########
 File path: core/src/main/java/org/apache/calcite/sql/SqlUtil.java
 ##########
 @@ -1069,6 +1069,20 @@ private void visitChild(SqlNode node) {
       return check(type);
     }
   }
+
+  /**
+   * Whether the selectItem is a table function node in the select.
+   * eg. "select table_func(1) as (f0,f1)"
+   * @param selectItem select item
+   * @return true is this selectItem is a table function call
+   */
 
 Review comment:
   Thanks for correct me.

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