githublaohu commented on code in PR #12059:
URL: https://github.com/apache/dolphinscheduler/pull/12059#discussion_r975227303
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dolphinscheduler-task-plugin/dolphinscheduler-task-sql/src/main/java/org/apache/dolphinscheduler/plugin/task/sql/SqlTask.java:
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@@ -255,6 +255,15 @@ private String resultProcess(ResultSet resultSet) throws
Exception {
resultJSONArray.add(mapOfColValues);
rowCount++;
}
+ // result is null,output table metadata
+ if (resultJSONArray.isEmpty()) {
Review Comment:
1. int num = md.getColumnCount(); 如果num为零，怎么办？
2. 如果resultJSONArray的数据里全是填充的， 267行的代码就没有意义了
##########
dolphinscheduler-task-plugin/dolphinscheduler-task-sql/src/main/java/org/apache/dolphinscheduler/plugin/task/sql/SqlTask.java:
##########
@@ -255,6 +255,15 @@ private String resultProcess(ResultSet resultSet) throws
Exception {
resultJSONArray.add(mapOfColValues);
rowCount++;
}
+ // result is null,output table metadata
+ if (resultJSONArray.isEmpty()) {
+ ObjectNode emptyOfColValues = JSONUtils.createObjectNode();
+ for (int i = 1; i <= num; i++) {
Review Comment:
是否只需要填充一行就行了
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