pingcap / pingcap/tidb

batch on limit statement with table alias execute failed

Open
#63,220 1 comment 0 reactions 0 assignees View on GitHub
contribution type/bug
Dominant language
Go
Stars
40.5k
Forks
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PR merge metrics
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Description

## Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

create table test(id int primary key,name varchar(100));
batch on t.id limit 100 update test t set t.name='aa' where t.id >10;

2. What did you expect to see? (Required)
Execution successful
+----------------+---------------+
| number of jobs | job status |
+----------------+---------------+
| 0 | all succeeded |
+----------------+---------------+

3. What did you see instead (Required)

ERROR 1054 (42S22): Unknown column 't.id' in 'where clause'

4. What is your TiDB version? (Required)

Release Version: v7.5.1
Edition: Community
Git Commit Hash: 7d16cc79e81bbf573124df3fd9351c26963f3e70
Git Branch: heads/refs/tags/v7.5.1
UTC Build Time: 2024-02-27 14:21:13
GoVersion: go1.21.6
Race Enabled: false
Check Table Before Drop: false
Store: tikv

Contributor guide

Open the contributing guide

Research direction

Run the supplied CREATE TABLE and BATCH SQL against TiDB v7.5.1 to reproduce the alias failure, then trace the batch-on-limit handling for the aliased table. Done means the statement executes successfully and reports all jobs succeeded without the unknown-column error.

Written by the indexing model from the issue text.

Assessment

Tech stack
sql
Domain
databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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