pingcap/tidb

Extend 'Table has no partition for value ...' error message to include the value

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#60,629 opened on Apr 17, 2025

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good first issuetype/enhancement

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Description

Enhancement

Test:

tidb> create table t (id varchar(255)) partition by list columns (id) (partition p0 values in ('ok'));
Query OK, 0 rows affected (0.03 sec)

tidb> insert into t values ('ok'),('notok');
ERROR 1526 (HY000): Table has no partition for value from column_list

It would be more beneficial if the error was:

ERROR 1526 (HY000): Table has no partition for value 'notok'

instead

Contributor guide

Research direction
Locate the code that generates the error message 'Table has no partition for value from column list' in TiDB's partition handling (likely in 'table/partition.go' or similar). Modify the error string to include the actual column value that is not found in any partition. Ensure the value is properly quoted to avoid SQL injection in the error output. Check the existing tests for partition error messages to add a test case covering this new error format.
Tech stack
gosql
Domain
databasebackenddeveloper experience
Issue type
Feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
2
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-3 hours
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
Blocked
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
Clear
Prerequisites
Go basicsTiDB partitioning
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
65