[SPARK-17530][SQL] Add Statistics into DESCRIBE FORMATTED
### What changes were proposed in this pull request?
Statistics is missing in the output of `DESCRIBE FORMATTED`. This PR is to add it. After the PR, the output will be like:
```
+----------------------------+----------------------------------------------------------------------------------------------------------------------+-------+
|col_name |data_type |comment|
+----------------------------+----------------------------------------------------------------------------------------------------------------------+-------+
|key |string |null |
|value |string |null |
| | | |
|# Detailed Table Information| | |
|Database: |default | |
|Owner: |xiaoli | |
|Create Time: |Tue Sep 13 14:36:57 PDT 2016 | |
|Last Access Time: |Wed Dec 31 16:00:00 PST 1969 | |
|Location: |file:/private/var/folders/4b/sgmfldk15js406vk7lw5llzw0000gn/T/warehouse-9982e1db-df17-4376-a140-dbbee0203d83/texttable| |
|Table Type: |MANAGED | |
|Statistics: |sizeInBytes=5812, rowCount=500, isBroadcastable=false | |
|Table Parameters: | | |
| rawDataSize |-1 | |
| numFiles |1 | |
| transient_lastDdlTime |1473802620 | |
| totalSize |5812 | |
| COLUMN_STATS_ACCURATE |false | |
| numRows |-1 | |
| | | |
|# Storage Information | | |
|SerDe Library: |org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe | |
|InputFormat: |org.apache.hadoop.mapred.TextInputFormat | |
|OutputFormat: |org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat | |
|Compressed: |No | |
|Storage Desc Parameters: | | |
| serialization.format |1 | |
+----------------------------+----------------------------------------------------------------------------------------------------------------------+-------+
```
Also improve the output of statistics in `DESCRIBE EXTENDED` by removing duplicate `Statistics`. Below is the example after the PR:
```
+----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------+
|col_name |data_type |comment|
+----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------+
|key |string |null |
|value |string |null |
| | | |
|# Detailed Table Information|CatalogTable(
Table: `default`.`texttable`
Owner: xiaoli
Created: Tue Sep 13 14:38:43 PDT 2016
Last Access: Wed Dec 31 16:00:00 PST 1969
Type: MANAGED
Schema: [StructField(key,StringType,true), StructField(value,StringType,true)]
Provider: hive
Properties: [rawDataSize=-1, numFiles=1, transient_lastDdlTime=1473802726, totalSize=5812, COLUMN_STATS_ACCURATE=false, numRows=-1]
Statistics: sizeInBytes=5812, rowCount=500, isBroadcastable=false
Storage(Location: file:/private/var/folders/4b/sgmfldk15js406vk7lw5llzw0000gn/T/warehouse-8ea5c5a0-5680-4778-91cb-c6334cf8a708/texttable, InputFormat: org.apache.hadoop.mapred.TextInputFormat, OutputFormat: org.apache.hadoop.hive.ql.io.HiveIgnoreKeyTextOutputFormat, Serde: org.apache.hadoop.hive.serde2.lazy.LazySimpleSerDe, Properties: [serialization.format=1]))| |
+----------------------------+-------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------+-------+
```
### How was this patch tested?
Manually tested.
Author: gatorsmile <gatorsmile@gmail.com>
Closes #15083 from gatorsmile/descFormattedStats.
37b93f54e8