The following query is auto generated by Tableau and uses Null-safe operator which fails with the error below. When changed to normal equal operator, it runs fine.
This is only happens for ColumnStore table. It is not an issue on MyISAM table.

MariaDB [com_db]> SELECT t0.hour_ct AS hour_ct, t0.temp0, t1.dimension_0,
-> t1.measure__1 AS sum_Calculation_1524749987192848385_ok
-> FROM (
-> SELECT hour_ct AS hour_ct,
> ADDDATE( DATE_FORMAT( hour_ct, '%Y%m-%d 00:00:00' ), INTERVAL 0 SECOND ) AS temp0
-> FROM com_db.DC_MNI_mvcore_video_hourly
-> WHERE ((hour_ct >= TIMESTAMP('2022-08-07 00:00:00')) AND (hour_ct < TIMESTAMP('2022-08-08 00:00:00')))
-> GROUP BY 1,2
-> ) t0
-> INNER JOIN (
> SELECT ADDDATE( DATE_FORMAT( hour_ct, '%Y%m-%d 00:00:00' ), INTERVAL 0 SECOND ) AS dimension_0,
-> COUNT(DISTINCT hour_ct) AS measure__1
-> FROM com_db.DC_MNI_mvcore_video_hourly
-> WHERE ((hour_ct >= TIMESTAMP('2022-08-01 00:00:00')) AND (hour_ct < TIMESTAMP('2022-08-08 00:00:00')))
-> GROUP BY 1
-> ) t1 ON (t0.temp0 <=> t1.dimension_0);
ERROR 1815 (HY000): Internal error: MCS-1000: 'sub-query' and 'sub-query' are not joined.
MariaDB [com_db]>
MariaDB [com_db]>
MariaDB [com_db]> SELECT t0.hour_ct AS hour_ct, t0.temp0, t1.dimension_0,
-> t1.measure__1 AS sum_Calculation_1524749987192848385_ok
-> FROM (
-> SELECT hour_ct AS hour_ct,
> ADDDATE( DATE_FORMAT( hour_ct, '%Y%m-%d 00:00:00' ), INTERVAL 0 SECOND ) AS temp0
-> FROM com_db.DC_MNI_mvcore_video_hourly
-> WHERE ((hour_ct >= TIMESTAMP('2022-08-07 00:00:00')) AND (hour_ct < TIMESTAMP('2022-08-08 00:00:00')))
-> GROUP BY 1,2
-> ) t0
-> INNER JOIN (
> SELECT ADDDATE( DATE_FORMAT( hour_ct, '%Y%m-%d 00:00:00' ), INTERVAL 0 SECOND ) AS dimension_0,
-> COUNT(DISTINCT hour_ct) AS measure__1
-> FROM com_db.DC_MNI_mvcore_video_hourly
-> WHERE ((hour_ct >= TIMESTAMP('2022-08-01 00:00:00')) AND (hour_ct < TIMESTAMP('2022-08-08 00:00:00')))
-> GROUP BY 1
-> ) t1 ON (t0.temp0 = t1.dimension_0);
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24 rows in set (0.612 sec)

[root@f68eac01f002 columnstore]# pwd
/usr/share/columnstore
[root@f68eac01f002 columnstore]# cat releasenum
version=6.4.3
release=1