executor: fix session time in show processlist

[imtbkcat]

What problem does this PR solve?

Fix time show in show processlist.

What is changed and how it works?

In original code, if the client is in sleep state, process info is always "". So the time is always 0
like this:

+------+------+-----------+------+---------+------+-------+------------------+------+
| Id   | User | Host      | db   | Command | Time | State | Info             | Mem  |
+------+------+-----------+------+---------+------+-------+------------------+------+
|    1 | root | 127.0.0.1 | test | Sleep   |    0 | 2     |                  |    0 |
|    2 | root | 127.0.0.1 |      | Query   |    0 | 2     | show processlist |    0 |
+------+------+-----------+------+---------+------+-------+------------------+------+

After fixed:

+------+------+-----------+------+---------+------+-------+------------------+------+
| Id   | User | Host      | db   | Command | Time | State | Info             | Mem  |
+------+------+-----------+------+---------+------+-------+------------------+------+
|    1 | root | 127.0.0.1 |      | Query   |   90 | 2     |                  |    0 |
|    2 | root | 127.0.0.1 |      | Query   |    0 | 2     | show processlist |    0 |
+------+------+-----------+------+---------+------+-------+------------------+------+
2 rows in set (0.00 sec)

Check List

Tests

• Unit test

Code changes

• Has exported function/method change

Side effects

[jackysp]

/run-all-tests

[imtbkcat]

/run-all-tests

[imtbkcat]

/run-all-tests

[zimulala]

LGTM

[jackysp]

LGTM