Error 1210 when modifying table-level attribute lob_inrow_threshold in mysqltest on Windows

[chyujing]

Environment

• Version: Server version: 5.7.25 OceanBase seekdb (r) (Built 1-e1ac5a57bf17078ca46ec9add574edeffac7c3f9 Apr 7 2026)
• Is this a temporary version provided by RD?: No
• Reproducibility: Stable reproduction

Description

When running the mysqltest case dml_batch_execute_opt.insertup_replace_batch_dml_opt on a Windows system, an error (Error 1210) occurs while attempting to modify the table-level attribute lob_inrow_threshold.

Steps to Reproduce

1. Connect using: mysql -uroot -h -P 2881
2. Execute the following SQL statements:

drop table t1;
create table t1(c1 int primary key, c2 int, c3 text);
alter table t1 set lob_inrow_threshold = 5;

3. The ALTER TABLE statement fails with Error 1210.

Additional Context

• Environment Information: Please provide the connection strings for the problematic tenant and the sys tenant, as well as deployment information. Indicate if the scene has been preserved.
• Log Information: (Not provided)
• Other Notes: For issues reported by external business teams, please correctly select the "Work Item Type" on the right based on the actual situation:
  • Customer Service Feedback: Specifically refers to issues before production deployment or during POC, where a product bug is clearly identified requiring a fix and release.
  • Online Issue: A problem that has occurred in a production environment, clearly identified as a product bug, but not classified as a fault.
  • Online Fault: A problem that has occurred in a production environment, clearly identified as a product bug, causing business errors or public opinion impact on the customer side (the interpretation of whether it constitutes a fault belongs to the delivery service team).

[hnwyllmm]

Same issue as in #534.