101 lines
3.4 KiB
SQL
101 lines
3.4 KiB
SQL
-- 【管理员执行】数据库迁移脚本
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-- 使用 postgres 或其他超级用户执行此脚本
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-- ============================================================================
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-- 【步骤 1】添加缺失的字段到 journal_entries 表
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-- ============================================================================
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-- 检查并添加 is_latest 字段
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DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_name = 'journal_entries' AND column_name = 'is_latest'
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) THEN
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ALTER TABLE journal_entries ADD COLUMN is_latest BOOLEAN DEFAULT true;
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RAISE NOTICE '✓ 字段 is_latest 已添加';
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ELSE
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RAISE NOTICE '✓ 字段 is_latest 已存在';
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END IF;
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END $$;
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-- 检查并添加 revision_count 字段
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DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_name = 'journal_entries' AND column_name = 'revision_count'
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) THEN
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ALTER TABLE journal_entries ADD COLUMN revision_count INTEGER DEFAULT 1;
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RAISE NOTICE '✓ 字段 revision_count 已添加';
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ELSE
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RAISE NOTICE '✓ 字段 revision_count 已存在';
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END IF;
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END $$;
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-- 检查并添加 original_entry_id 字段
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DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.columns
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WHERE table_name = 'journal_entries' AND column_name = 'original_entry_id'
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) THEN
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ALTER TABLE journal_entries ADD COLUMN original_entry_id INTEGER;
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RAISE NOTICE '✓ 字段 original_entry_id 已添加';
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ELSE
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RAISE NOTICE '✓ 字段 original_entry_id 已存在';
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END IF;
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END $$;
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-- ============================================================================
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-- 【步骤 2】添加外键约束（如果字段已添加）
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-- ============================================================================
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DO $$
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BEGIN
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IF NOT EXISTS (
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SELECT 1 FROM information_schema.table_constraints
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WHERE table_name = 'journal_entries' AND constraint_name = 'fk_original_entry_id'
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) THEN
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ALTER TABLE journal_entries
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ADD CONSTRAINT fk_original_entry_id
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FOREIGN KEY (original_entry_id)
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REFERENCES journal_entries(journal_entry_id)
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ON DELETE CASCADE;
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RAISE NOTICE '✓ 外键约束已添加';
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ELSE
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RAISE NOTICE '✓ 外键约束已存在';
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END IF;
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END $$;
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-- ============================================================================
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-- 【步骤 3】创建索引以优化查询
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-- ============================================================================
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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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-- ============================================================================
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-- 【步骤 4】验证迁移结果
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-- ============================================================================
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SELECT 'Migration Verification:' as status;
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SELECT column_name, data_type, is_nullable
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FROM information_schema.columns
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WHERE table_name = 'journal_entries'
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AND column_name IN ('is_latest', 'revision_count', 'original_entry_id')
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ORDER BY ordinal_position;
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SELECT 'Indexes:' as status;
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SELECT indexname
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FROM pg_indexes
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WHERE tablename = 'journal_entries'
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AND (indexname LIKE 'idx_journal_entries_is_latest' OR indexname LIKE 'idx_journal_entries_original_entry_id');
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SELECT '✓ 迁移完成！' as complete;
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