31 lines
1.2 KiB
SQL
31 lines
1.2 KiB
SQL
-- Migration: Add is_latest and revision tracking columns
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-- 1. 添加新欄位到 journal_entries
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ALTER TABLE journal_entries
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ADD COLUMN IF NOT EXISTS is_latest BOOLEAN DEFAULT true,
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ADD COLUMN IF NOT EXISTS revision_count INTEGER DEFAULT 1,
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ADD COLUMN IF NOT EXISTS original_entry_id INTEGER REFERENCES journal_entries(journal_entry_id) ON DELETE CASCADE;
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-- 2. 處理現有數據
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-- 將所有已刪除的交易標記為 is_latest = false
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UPDATE journal_entries
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SET is_latest = false
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WHERE is_deleted = true AND is_latest IS NOT NULL;
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-- 將所有活躍交易標記為 is_latest = true
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UPDATE journal_entries
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SET is_latest = true
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WHERE is_deleted = false AND is_latest IS NULL;
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-- 3. 創建索引以提高查詢性能
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CREATE INDEX IF NOT EXISTS idx_journal_entries_is_latest
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ON journal_entries(is_latest, entry_date);
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CREATE INDEX IF NOT EXISTS idx_journal_entries_original_entry_id
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ON journal_entries(original_entry_id);
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-- 4. 添加註釋說明
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COMMENT ON COLUMN journal_entries.is_latest IS '是否為最新版本（試算表使用此欄位過濾）';
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COMMENT ON COLUMN journal_entries.revision_count IS '修正版次（原始=1, 第1次修正=2, ...）';
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COMMENT ON COLUMN journal_entries.original_entry_id IS '指向原始交易（如果是修正版本）';
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