[SPARK-28557] Support empty select list

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 3.0.0
• Component/s: SQL
• Assignee: Unassigned
• Reporter: Yuming Wang
• Created: 30/Jul/19 02:40
• Updated: 29/Mar/20 02:22
• Resolved: 29/Mar/20 02:22

Description

Examples:

select union select;
select intersect select;
select except select;

https://github.com/postgres/postgres/blob/REL_12_BETA2/src/test/regress/sql/union.sql#L193-L199

Issue Links

• duplicates: SPARK-28409 SELECT FROM syntax