[FLINK-14711] Add Alter Function and Show Functions in SQL Parser

• Type: Sub-task
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.10.0
• Fix Version/s: 1.10.0
• Component/s: Table SQL / API
• Labels: pull-request-available
• Docs Text: https://docs.google.com/document/d/16kkHlis80s61ifnIahCj-0IEdy5NJ1z-vGEJd_JuLog/edit#heading=h.ojfndkay47rf
• Assignee: Zhenqiu Huang
• Reporter: Zhenqiu Huang
• Due: 24/Nov/19
• Created: 12/Nov/19 04:59
• Updated: 19/Nov/19 23:04
• Resolved: 19/Nov/19 23:04

Description

It is a sibling ticket for https://issues.apache.org/jira/browse/FLINK-7151.

Alter Function Statement
ALTER [TEMPORARY|TEMPORARY SYSTEM] FUNCTION [IF EXISTS] [catalog_name.][db_name.] function_name AS identifier [LANGUAGE JAVA|SCALA|PYTHON];
Show Function Statement

SHOW FUNCTIONS [catalog_name.][db_name]

Issue Links

• blocks: FLINK-7151 Support function DDL
• is a child of: FLINK-7151 Support function DDL
• links to: GitHub Pull Request #10231