Rank: Legend
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I'd like a SQL statement that finds the amount of posts for each user, then updates the specific field with that number. On table_fpro_posts I want the count of posts that equal the poster_id and then update the field field_user_posts on table_users. The relation between the tables would be user_id from the table_users table and poster_id from the table_fpro_posts table. Code:table_users table_fpro_posts
user_id = poster_id I've noticed several members with a post count that is not accurate and I'd like to fix that, but not sure where to start with the SQL command. Getting the count isn't too hard, but I don't want to go through each member and manually update them. That's not fun. [php] SELECT COUNT(post_id) FROM `cvs_fpro_posts` WHERE poster_id = 2[/php] |
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Rank: Legend
Posts: 22,899
Joined: 10/14/2006(UTC)
Location: United States
Applause Given: 1,299
Applause Received: 906
|
[php]UPDATE table_users
SET user_posts = COUNT(*)
FROM table_fpro_posts
WHERE table_fpro_posts.poster_id = table_users.user_id[/php]
That was my first guess, but I haven't ran it ... scared I'll break shit. |
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Rank: Legend
Posts: 22,899
Joined: 10/14/2006(UTC)
Location: United States
Applause Given: 1,299
Applause Received: 906
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Code:SELECT table_fpro_posts.poster_id, count(table_fpro_posts.poster_id), table_users.user_id, table_users.user_posts
FROM table_users LEFT JOIN table_fpro_posts
ON table_users.user_id = table_fpro_posts.poster_id
GROUP BY table_fpro_posts.poster_id This displays the members post count on their profile, next to the actual post count. |
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Rank: Legend
Posts: 22,899
Joined: 10/14/2006(UTC)
Location: United States
Applause Given: 1,299
Applause Received: 906
|
[php]UPDATE table_users
SET table_users.user_posts = (SELECT COUNT(table_fpro_posts.poster_id)
FROM table_fpro_posts
WHERE table_users.user_id = table_fpro_posts.poster_id)[/php]
This did the trick. |
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Rank: Legend
Posts: 22,899
Joined: 10/14/2006(UTC)
Location: United States
Applause Given: 1,299
Applause Received: 906
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