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Optimize message count migration

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This commit is contained in:
Ske 2020-06-13 01:25:12 +02:00
parent 8ac2f1e4b8
commit 920c8cff01
1 changed files with 3 additions and 1 deletions
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4
PluralKit.Core/Database/Migrations/7.sql
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@ -3,8 +3,10 @@
-- Add message count row to members table, initialize it with the correct data -- Add message count row to members table, initialize it with the correct data
alter table members add column message_count int not null default 0; alter table members add column message_count int not null default 0;
update members set message_count = (select count(*) from messages where messages.member = members.id);
update members set message_count = counts.count
from (select member, count(*) as count from messages group by messages.member) as counts
where counts.member = members.id;
-- Create a trigger function to increment the message count on inserting to the messages table -- Create a trigger function to increment the message count on inserting to the messages table
create function trg_msgcount_increment() returns trigger as $$ create function trg_msgcount_increment() returns trigger as $$