Add update time to show table status

[yangzhg]

Proposed changes

Add update time to show table status

MySQL [test_query_qa]> show table status;
+----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+---------------------+-----------+----------+----------------+---------+
| Name     | Engine | Version | Row_format | Rows | Avg_row_length | Data_length | Max_data_length | Index_length | Data_free | Auto_increment | Create_time         | Update_time         | Check_time          | Collation | Checksum | Create_options | Comment |
+----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+---------------------+-----------+----------+----------------+---------+
| bigtable | Doris  |    NULL | NULL       | NULL |           NULL |        NULL |            NULL |         NULL |      NULL |           NULL | 2021-06-29 17:09:28 | 2021-06-29 17:17:28 | 1970-01-01 07:59:59 | utf-8     |     NULL | NULL           | OLAP    |
| test     | Doris  |    NULL | NULL       | NULL |           NULL |        NULL |            NULL |         NULL |      NULL |           NULL | 2021-06-29 17:09:26 | 2021-06-29 17:17:28 | 1970-01-01 07:59:59 | utf-8     |     NULL | NULL           | OLAP    |
| baseall  | Doris  |    NULL | NULL       | NULL |           NULL |        NULL |            NULL |         NULL |      NULL |           NULL | 2021-06-29 17:09:26 | 2021-06-29 17:17:26 | 1970-01-01 07:59:59 | utf-8     |     NULL | NULL           | OLAP    |
+----------+--------+---------+------------+------+----------------+-------------+-----------------+--------------+-----------+----------------+---------------------+---------------------+---------------------+-----------+----------+----------------+---------+
3 rows in set (0.002 sec)

Types of changes

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• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
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• Code refactor (Modify the code structure, format the code, etc...)

Checklist

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• I have created an issue on (Fix #ISSUE) and described the bug/feature there in detail
• Compiling and unit tests pass locally with my changes
• I have added tests that prove my fix is effective or that my feature works
• If these changes need document changes, I have updated the document
• Any dependent changes have been merged

Further comments

If this is a relatively large or complex change, kick off the discussion at dev@doris.apache.org by explaining why you chose the solution you did and what alternatives you considered, etc...

[morningman]

LGTM