18 lines
668 B
MySQL
18 lines
668 B
MySQL
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-- Migration: 007 – Enhance user_messages with status lifecycle and timestamps
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-- Database: SQLite
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--
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-- SQLite does not support ADD COLUMN with constraints referencing other columns
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-- or backfill in a single ALTER, so we do it in two steps.
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ALTER TABLE user_messages ADD COLUMN status TEXT NOT NULL DEFAULT 'sent';
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ALTER TABLE user_messages ADD COLUMN received_at DATETIME;
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ALTER TABLE user_messages ADD COLUMN deleted_at DATETIME;
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-- Backfill already-read rows.
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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 = 1;
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CREATE INDEX IF NOT EXISTS idx_user_messages_status ON user_messages(user_id, status);
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