Wrong Result from Tiflash in processing timestamp

[Dylan0222]

Bug Report

Please answer these questions before submitting your issue. Thanks!

1. Minimal reproduce step (Required)

Drop table if exists t1;
CREATE TABLE t1 (
    id INT PRIMARY KEY AUTO_INCREMENT,
    col1 timestamp DEFAULT NULL
);

ALTER TABLE t1 SET TIFLASH REPLICA 1;

2. What did you expect to see? (Required)

I find that the returned information is inconsistent across two queries.

3. What did you see instead (Required)

mysql> SELECT /*+ READ_FROM_STORAGE(TIFLASH[t1])*/
    ->     col1,
    ->     ADDDATE(col1, INTERVAL 12 HOUR_MINUTE) AS modified_col1,
    ->     CASE
    ->         WHEN ADDDATE(col1, INTERVAL 12 HOUR_MINUTE) IS NULL THEN 'NULL VALUE'
    ->         ELSE 'VALID VALUE'
    ->     END AS value_status,
    ->     LENGTH(col1) AS col1_length,
    ->     CONCAT(ADDDATE(col1, INTERVAL 12 HOUR_MINUTE), ' processed') AS processed_value
    -> FROM t1
    -> WHERE
    ->     ADDDATE(col1, INTERVAL 12 HOUR_MINUTE) IS NULL
    ->     OR LENGTH(col1) > 5;
ERROR 1105 (HY000): other error for mpp stream: Code: 0, e.displayText() = DB::TiFlashException: date_add function does not support unit HOUR_MINUTE yet., e.what() = DB::TiFlashException,


mysql> SELECT /*+ READ_FROM_STORAGE(TIKV[t1])*/
    ->     col1,
    ->     ADDDATE(col1, INTERVAL 12 HOUR_MINUTE) AS modified_col1,
    ->     CASE
    ->         WHEN ADDDATE(col1, INTERVAL 12 HOUR_MINUTE) IS NULL THEN 'NULL VALUE'
    ->         ELSE 'VALID VALUE'
    ->     END AS value_status,
    ->     LENGTH(col1) AS col1_length,
    ->     CONCAT(ADDDATE(col1, INTERVAL 12 HOUR_MINUTE), ' processed') AS processed_value
    -> FROM t1
    -> WHERE
    ->     ADDDATE(col1, INTERVAL 12 HOUR_MINUTE) IS NULL
    ->     OR LENGTH(col1) > 5;
Empty set (0.04 sec)

4. What is your TiDB version? (Required)

TiDB v8.4.0

[Dylan0222]

/label affects-8.4

[Dylan0222]

/label affects-8.5