[SPARK-33004] Migrate DESCRIBE COLUMN to new resolution framework

• Type: Sub-task
• Status: Resolved
• Priority: Minor
• Resolution: Fixed
• Affects Version/s: 3.1.0
• Fix Version/s: 3.1.0
• Component/s: SQL
• Assignee: Terry Kim
• Reporter: Terry Kim
• Created: 26/Sep/20 23:10
• Updated: 07/Oct/20 06:33
• Resolved: 07/Oct/20 06:33

Description

Migrate "DESCRIBE tbl colname" to new resolution framework so that it has a consistent resolution rule for v1/v2 commands.

Currently, the following resolves to a table instead of a temp view:

sql("CREATE TABLE testcat.ns.t (id bigint) USING foo")
sql("CREATE TEMPORARY VIEW t AS SELECT 2 as id")
sql("USE testcat.ns")
sql("DESCRIBE t id") // 't' is resolved to testcat.ns.t

Issue Links

• links to: [Github] Pull Request #29880 (imback82)