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DEV: Avoid subquery in the ensure-consistency onceoff

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Nat 2024-08-02 18:27:18 +08:00
parent 4ebcd1187b
commit 2202986a2f
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1 changed files with 3 additions and 1 deletions
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db/post_migrate/20240711102255_ensure_consistency.rb
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@ -27,7 +27,9 @@ class EnsureConsistency < ActiveRecord::Migration[7.0]
# delete votes associated with no user # delete votes associated with no user
DB.exec(<<~SQL) DB.exec(<<~SQL)
DELETE FROM topic_voting_votes DELETE FROM topic_voting_votes
WHERE user_id NOT IN (SELECT id FROM users) USING topic_voting_votes tvv
LEFT JOIN users u ON tvv.user_id = u.id
WHERE u.id IS NULL;
SQL SQL
# delete votes associated with no topics # delete votes associated with no topics