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TiDB Trigonometric Function Precision Loss: SIN(x+2π) ≠ SIN(x) Due to Floating-Point Calculation Inconsistencies

contributionThis PR is from a community contributor.This PR is from a community contributor.

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64227 In pingcap/tidb;

· chen8908917 opened on Nov 2, 2025

SIN(x+2π) Mathematical Equivalence Failure Causes Incorrect UNION Query Results

contributionThis PR is from a community contributor.This PR is from a community contributor.

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64226 In pingcap/tidb;

· chen8908917 opened on Nov 2, 2025

Provides an easy way to know if a SQL has a corresponding SQL binding

component/spm

contributionThis PR is from a community contributor.This PR is from a community contributor.

report/customerCustomers have encountered this bug.Customers have encountered this bug.

type/enhancementThe issue or PR belongs to an enhancement.The issue or PR belongs to an enhancement.

Status: Open.

#64194 In pingcap/tidb;

· Damon-Guo opened on Oct 30, 2025

Correctly propagate error

contributionThis PR is from a community contributor.This PR is from a community contributor.

first-time-contributorIndicates that the PR was contributed by an external member and is a first-time contributor.Indicates that the PR was contributed by an external member and is a first-time contributor.

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64183 In pingcap/tidb;

· jfrabaute-arista opened on Oct 29, 2025

statistics: global stats underestimates cardinality to a small value when "hole" exists

component/statistics

contributionThis PR is from a community contributor.This PR is from a community contributor.

sig/plannerSIG: PlannerSIG: Planner

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64117 In pingcap/tidb;

· L-maple opened on Oct 24, 2025

create view under a schema can not be selected normally in another schema

component/ddlThis issue is related to DDL of TiDB.This issue is related to DDL of TiDB.

contributionThis PR is from a community contributor.This PR is from a community contributor.

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64116 In pingcap/tidb;

· michaelliuyuan opened on Oct 24, 2025

Failed to check NULL parameters in TRUNCATE operation

contributionThis PR is from a community contributor.This PR is from a community contributor.

sig/executionSIG executionSIG execution

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64095 In pingcap/tidb;

· sayJason opened on Oct 22, 2025

Incorrect result for CONV with NULL parameters

contributionThis PR is from a community contributor.This PR is from a community contributor.

sig/executionSIG executionSIG execution

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64094 In pingcap/tidb;

· sayJason opened on Oct 22, 2025

stddev_samp returns unexpected value

contributionThis PR is from a community contributor.This PR is from a community contributor.

sig/executionSIG executionSIG execution

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64075 In pingcap/tidb;

· chen8908917 opened on Oct 21, 2025

stddev_samp function return NULL when its argument's number is one

contributionThis PR is from a community contributor.This PR is from a community contributor.

sig/executionSIG executionSIG execution

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64074 In pingcap/tidb;

· chen8908917 opened on Oct 21, 2025

Row number changes unexpectedly without any grammar change

contributionThis PR is from a community contributor.This PR is from a community contributor.

sig/plannerSIG: PlannerSIG: Planner

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64046 In pingcap/tidb;

· chen8908917 opened on Oct 20, 2025

information_schema.user_attributes allows unauthorized data access

contributionThis PR is from a community contributor.This PR is from a community contributor.

sig/sql-infraSIG: SQL InfraSIG: SQL Infra

type/bugThe issue is confirmed as a bug.The issue is confirmed as a bug.

Status: Open.

#64031 In pingcap/tidb;

· pzr21 opened on Oct 18, 2025