[GitHub] [iotdb] HTHou edited a comment on issue #2493: 获取 path下的 nodes, 例如： show child nodes path

[GitBox <gi...@apache.org>]

HTHou edited a comment on issue #2493:
URL: https://github.com/apache/iotdb/issues/2493#issuecomment-760070194


   I think we can support sql like this.
   ```
   IoTDB> show timeseries
   +-------------+-----+-------------+--------+--------+-----------+----+----------+
   |   timeseries|alias|storage group|dataType|encoding|compression|tags|attributes|
   +-------------+-----+-------------+--------+--------+-----------+----+----------+
   |root.sg.d1.s3| null|      root.sg|   INT32|     RLE|     SNAPPY|null|      null|
   |root.sg.d1.s1| null|      root.sg|   INT32|     RLE|     SNAPPY|null|      null|
   |root.sg.d1.s2| null|      root.sg|   INT32|     RLE|     SNAPPY|null|      null|
   +-------------+-----+-------------+--------+--------+-----------+----+----------+
   Total line number = 3
   It costs 0.026s
   
   IoTDB> show child nodes root.sg.d1
   +-----------+
   |child nodes|
   +-----------+
   |         s1|
   |         s2|
   |         s3|
   +-----------+
   Total line number = 3
   It costs 0.142s
   ```
   
   To implement it, just consider a modification of the method `findChildNodePathInNextLevel` in https://github.com/apache/iotdb/blob/master/server/src/main/java/org/apache/iotdb/db/metadata/MTree.java


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