adv_sample_user_queries_plus
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adv_sample_user_queries_plus [2021/05/15 12:18] – index optimisation daniel | adv_sample_user_queries_plus [2021/05/15 12:21] (current) – daniel | ||
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- | ==== Advanced examples of SQL queries ==== | + | ==== Advanced examples of SQL queries ==== |
=== Messages sent, with senders or recipients from a specific domain, but not tagged with a specified tag: === | === Messages sent, with senders or recipients from a specific domain, but not tagged with a specified tag: === | ||
Line 34: | Line 34: | ||
</ | </ | ||
---- | ---- | ||
+ | |||
+ | === Messages from the thread with the most unprocessed messages === | ||
+ | <code sql> | ||
+ | select mail_id from mail where thread_id in | ||
+ | (select thread_id | ||
+ | from mail | ||
+ | where status& | ||
+ | and thread_id is not null | ||
+ | group by thread_id | ||
+ | order by count(*) desc | ||
+ | limit 1 | ||
+ | ) | ||
+ | </ | ||
See the [[http:// | See the [[http:// | ||
adv_sample_user_queries_plus.txt · Last modified: 2021/05/15 12:21 by daniel