VALUES statement is not supported

Description

values row(1);

mysql> values row(1);
+----------+
| column_0 |
+----------+
|        1 |
+----------+
1 row in set (0.00 sec)

mysql> values row(1);
ERROR 1051 (42S02): Unknown table ''

Release Version: v8.1.0
Edition: Community
Git Commit Hash: 945d07c5d5c7a1ae212f6013adfb187f2de24b23
Git Branch: HEAD
UTC Build Time: 2024-05-21 03:52:40
GoVersion: go1.21.10
Race Enabled: false
Check Table Before Drop: false
Store: tikv

Contributor guide

Tech stack

gosql

Domain

backenddatabase

Issue type

bug

DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.

4

Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.

over 1 week

Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.

stale

ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.

clear

Prerequisites

GoUnderstanding of MySQL SQL syntax

Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.

15

Research direction

Investigate the SQL parser in TiDB (likely in `parser/` directory) to understand how VALUES statements are handled. Look at existing similar statements like SELECT or TABLE for reference. Check the issue comments for any discussion on implementation approach. The error 'Unknown table' suggests the parser might be treating VALUES as a table name. The fix likely involves adding a new AST node and implementing execution logic in the planner and executor.