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sql-statement-drop-stats: fix STATS_META output after DROP STATS #23557

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ti-chi-bot merged 2 commits into from
Aug 31, 2026
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sql-statement-drop-stats: fix STATS_META output after DROP STATS #23557

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83b729c
docs: fix DROP STATS stats_meta example
doc-claw-bot Aug 18, 2026
7ff4102
Update sql-statement-drop-stats.md
qiancai Aug 25, 2026
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19 changes: 13 additions & 6 deletions sql-statements/sql-statement-drop-stats.md
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Original file line number Diff line number Diff line change
Expand Up @@ -65,11 +65,11 @@ SHOW STATS_META WHERE db_name='test' and table_name='t';
```

```
+---------+------------+----------------+---------------------+--------------+-----------+
| Db_name | Table_name | Partition_name | Update_time | Modify_count | Row_count |
+---------+------------+----------------+---------------------+--------------+-----------+
| test | t | | 2020-05-25 20:34:33 | 0 | 0 |
+---------+------------+----------------+---------------------+--------------+-----------+
+---------+------------+----------------+---------------------+--------------+-----------+-------------------+
| Db_name | Table_name | Partition_name | Update_time | Modify_count | Row_count | Last_analyze_time |
+---------+------------+----------------+---------------------+--------------+-----------+-------------------+
| test | t | | 2020-05-25 20:34:33 | 0 | 0 | NULL |
+---------+------------+----------------+---------------------+--------------+-----------+-------------------+
1 row in set (0.00 sec)
```

Expand All @@ -81,12 +81,19 @@ DROP STATS t;
Query OK, 0 rows affected (0.00 sec)
```

`DROP STATS` deletes statistics such as TopN and histogram buckets of the table, but does not delete the record of the table from `STATS_META`. Therefore, after you execute `DROP STATS`, `SHOW STATS_META` still returns the `Modify_count` and `Row_count` information of the table.

```sql
SHOW STATS_META WHERE db_name='test' and table_name='t';
```

```
Empty set (0.00 sec)
+---------+------------+----------------+---------------------+--------------+-----------+-------------------+
| Db_name | Table_name | Partition_name | Update_time | Modify_count | Row_count | Last_analyze_time |
+---------+------------+----------------+---------------------+--------------+-----------+-------------------+
| test | t | | 2020-05-25 20:34:33 | 0 | 0 | NULL |
+---------+------------+----------------+---------------------+--------------+-----------+-------------------+
1 row in set (0.00 sec)
```

## MySQL compatibility
Expand Down