[SPARK-29835] Remove the unnecessary conversion from Statement to LogicalPlan for DELETE/UPDATE

• Type: Sub-task
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 3.0.0
• Fix Version/s: 3.0.0
• Component/s: SQL
• Assignee: Xianyin Xin
• Reporter: Xianyin Xin
• Created: 11/Nov/19 07:41
• Updated: 14/Nov/19 01:11
• Resolved: 13/Nov/19 12:53

Description

The current parse and analyze flow for DELETE is: 1, the SQL string will be firstly parsed to `DeleteFromStatement`; 2, the `DeleteFromStatement` be converted to `DeleteFromTable`. However, the SQL string can be parsed to `DeleteFromTable` directly, where a `DeleteFromStatement` seems to be redundant.

It is the same for UPDATE.

Issue Links

• links to: GitHub Pull Request #26464