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Some useful SQL queries

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Vincent Cloutier 2022-12-27 13:31:32 -05:00
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# Most common servers
```SQL
SELECT COUNT(*), host FROM followers GROUP BY host ORDER BY count DESC;
```
# Most popular twitter users
```SQL
SELECT COUNT(*), acct FROM (SELECT unnest(followings) as follow FROM followers) AS f INNER JOIN twitter_users ON f.follow=twitter_users.id GROUP BY acct ORDER BY count DESC;
```
# Most active users
```SQL
SELECT array_length(followings, 1) AS l, acct, host FROM followers ORDER BY l DESC;
```
# Lag
```SQL
SELECT COUNT(*), date_trunc('day', lastsync) FROM (SELECT unnest(followings) as follow FROM followers GROUP BY follow) AS f INNER JOIN twitter_users ON f.follow=twitter_users.id GROUP BY date_trunc;
```