6 lines
391 B
SQL
6 lines
391 B
SQL
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-- Add imap_uid column to mails table for proper deduplication
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ALTER TABLE mails ADD COLUMN IF NOT EXISTS imap_uid VARCHAR(20);
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CREATE INDEX IF NOT EXISTS ix_mails_imap_uid ON mails(account_id, imap_uid);
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-- Unique constraint to prevent duplicates per folder
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CREATE UNIQUE INDEX IF NOT EXISTS uq_mails_account_folder_uid ON mails(account_id, folder_id, imap_uid) WHERE imap_uid IS NOT NULL;
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