Github user wzhfy commented on a diff in the pull request:
https://github.com/apache/spark/pull/16422#discussion_r126352497
--- Diff:
sql/core/src/test/resources/sql-tests/results/describe-table-column.sql.out ---
@@ -0,0 +1,133 @@
+-- Automatically generated by SQLQueryTestSuite
+-- Number of queries: 15
+
+
+-- !query 0
+CREATE TEMPORARY VIEW desc_col_temp_table (key int COMMENT
'column_comment') USING PARQUET
+-- !query 0 schema
+struct<>
+-- !query 0 output
+
+
+
+-- !query 1
+DESC desc_col_temp_table key
+-- !query 1 schema
+struct<col_name:string,data_type:string,comment:string>
+-- !query 1 output
+col_name data_type comment
+key int column_comment
+
+
+-- !query 2
+DESC EXTENDED desc_col_temp_table key
+-- !query 2 schema
+struct<col_name:string,data_type:string,min:string,max:string,num_nulls:string,distinct_count:string,avg_col_len:string,max_col_len:string,comment:string>
+-- !query 2 output
+col_name data_type min max num_nulls distinct_count
avg_col_len max_col_len comment
--- End diff --
I already checked with hive previously [in this
discussion](https://github.com/apache/spark/pull/16422#discussion_r125805788).
The output here is the same as in hive.
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