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У меня есть следующий запрос, который делает много Sending data
, и я не могу понять, почему.Профилирование запросов mysql-запроса для отправки данных?
INSERT INTO
Member_multi_site (
Person_id,
Site_id
)
SELECT
Person_id,
Site_id
FROM
Members m CROSS
JOIN
Sites s
WHERE NOT EXISTS (
SELECT
1
FROM
Member_multi_site
WHERE
person_id = m.person_id
AND
site_id = s.site_id
);
Запрос профиля:
+--------------------+-----------+
| Status | Duration |
+--------------------+-----------+
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000009 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000010 |
| Sending data | 0.000010 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000010 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000009 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000009 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000008 |
| executing | 0.000003 |
| Sending data | 0.000009 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000008 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000004 |
| Sending data | 0.000007 |
| executing | 0.000003 |
| Sending data | 19.202793 |
| end | 0.000028 |
| query end | 0.004342 |
| removing tmp table | 0.000062 |
| query end | 0.000009 |
| closing tables | 0.000028 |
| freeing items | 0.000049 |
| cleaning up | 0.000036 |
+--------------------+-----------+
Может быть установка MySQL?
Да, так работает запрос. Но почему так много «отправки данных»? Это мой вопрос. – Efekan