20 lines
806 B
MySQL
20 lines
806 B
MySQL
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-- Migration: 007 – Enhance user_messages with status lifecycle and timestamps
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-- Database: PostgreSQL
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--
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-- Adds: status (sent | read | deleted), received_at, deleted_at
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-- Existing rows are backfilled to is_read=true → status='read', else status='sent'.
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ALTER TABLE user_messages
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ADD COLUMN IF NOT EXISTS status TEXT NOT NULL DEFAULT 'sent',
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ADD COLUMN IF NOT EXISTS received_at TIMESTAMPTZ,
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ADD COLUMN IF NOT EXISTS deleted_at TIMESTAMPTZ;
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-- Backfill: rows already marked is_read should be 'read' with received_at = created_at.
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UPDATE user_messages
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SET status = 'read',
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received_at = created_at
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WHERE is_read = true AND status = 'sent';
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CREATE INDEX IF NOT EXISTS idx_user_messages_status ON user_messages(user_id, status)
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WHERE status != 'deleted';
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