zjffdu commented on a change in pull request #3321: [ZEPPELIN-3487]. Spark SQL
(%sql) paragraphs for DDLs should suppress datagrid-ui
URL: https://github.com/apache/zeppelin/pull/3321#discussion_r263686439
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File path:
spark/spark1-shims/src/main/scala/org/apache/zeppelin/spark/Spark1Shims.java
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@@ -56,6 +56,10 @@ public String showDataFrame(Object obj, int maxResult) {
if (obj instanceof DataFrame) {
DataFrame df = (DataFrame) obj;
String[] columns = df.columns();
+ // DDL will empty DataFrame
Review comment:
row count doesn't matter. Because if column count is 0, then row count must
be 0
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