pingcap / pingcap/tidb

TiFlash Bitwise Inversion function behaves differently with tidb and tikv

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#57,731 3 comments 0 reactions 0 assignees View on GitHub
may-affects-5.4 may-affects-6.1 may-affects-6.5 may-affects-7.1 may-affects-7.5 may-affects-8.1 may-affects-8.5 severity/major sig/execution type/bug
Dominant language
Go
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Description

## Bug Report

Please answer these questions before submitting your issue. Thanks!

### 1. Minimal reproduce step (Required)
prepare data
```sql
drop table if exists t0;
CREATE TABLE t0(c0 CHAR NOT NULL );
INSERT INTO t0 VALUES ('A');
ALTER TABLE t0 SET TIFLASH REPLICA 1;
```
execute query
```sql
SELECT /*+ read_from_storage(tikv[t0]) */ * FROM t0 WHERE (~ ((BINARY ((~ (t0.c0))))));
SELECT /*+ read_from_storage(tiflash[t0]) */ * FROM t0 WHERE (~ ((BINARY ((~ (t0.c0))))));
```

### 2. What did you expect to see? (Required)
The results of the two queries are equal.

### 3. What did you see instead (Required)
Query1 result:
empty

Query2 result:
![Image](https://github.com/user-attachments/assets/1940df66-762d-4948-8ee2-9daa47cb5dea)

### 4. What is your TiDB version? (Required)

Release Version: v8.4.0
Edition: Community
Git Commit Hash: https://github.com/pingcap/tidb/commit/1a9f0fa25580907d3266dc3edf000ba24379a600
Git Branch: HEAD
UTC Build Time: 2024-11-07 15:18:43
GoVersion: go1.23.2
Race Enabled: false
Check Table Before Drop: false
Store: tikv

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