84 lines
2.7 KiB
PL/PgSQL
84 lines
2.7 KiB
PL/PgSQL
-- 000004_drop_legacy_user_order.down.sql
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-- 说明：回滚时恢复 legacy 用户/订单表（与历史 000001_init_schema 一致）。
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BEGIN;
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-- 恢复用户表
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CREATE TABLE IF NOT EXISTS tb_user (
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id SERIAL PRIMARY KEY,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP,
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-- 基本信息
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username VARCHAR(50) NOT NULL,
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email VARCHAR(100) NOT NULL,
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password VARCHAR(255) NOT NULL,
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-- 状态字段
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status VARCHAR(20) NOT NULL DEFAULT 'active',
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-- 元数据
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last_login_at TIMESTAMP,
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-- 唯一约束
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CONSTRAINT uk_user_username UNIQUE (username),
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CONSTRAINT uk_user_email UNIQUE (email)
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);
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-- 恢复订单表
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CREATE TABLE IF NOT EXISTS tb_order (
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id SERIAL PRIMARY KEY,
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created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
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deleted_at TIMESTAMP,
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-- 业务唯一键
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order_id VARCHAR(50) NOT NULL,
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-- 关联关系（注意：无数据库外键约束，在代码中管理）
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user_id INTEGER NOT NULL,
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-- 订单信息
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amount BIGINT NOT NULL,
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status VARCHAR(20) NOT NULL DEFAULT 'pending',
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remark VARCHAR(500),
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-- 时间字段
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paid_at TIMESTAMP,
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completed_at TIMESTAMP,
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-- 唯一约束
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CONSTRAINT uk_order_order_id UNIQUE (order_id)
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);
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-- 索引恢复
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CREATE INDEX IF NOT EXISTS idx_user_deleted_at ON tb_user(deleted_at);
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CREATE INDEX IF NOT EXISTS idx_user_status ON tb_user(status);
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CREATE INDEX IF NOT EXISTS idx_user_created_at ON tb_user(created_at);
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CREATE INDEX IF NOT EXISTS idx_order_deleted_at ON tb_order(deleted_at);
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CREATE INDEX IF NOT EXISTS idx_order_user_id ON tb_order(user_id);
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CREATE INDEX IF NOT EXISTS idx_order_status ON tb_order(status);
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CREATE INDEX IF NOT EXISTS idx_order_created_at ON tb_order(created_at);
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-- 注释恢复
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COMMENT ON TABLE tb_user IS '用户表';
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COMMENT ON COLUMN tb_user.username IS '用户名（唯一）';
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COMMENT ON COLUMN tb_user.email IS '邮箱（唯一）';
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COMMENT ON COLUMN tb_user.password IS '密码（bcrypt 哈希）';
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COMMENT ON COLUMN tb_user.status IS '用户状态：active, inactive, suspended';
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COMMENT ON COLUMN tb_user.deleted_at IS '软删除时间';
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COMMENT ON TABLE tb_order IS '订单表';
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COMMENT ON COLUMN tb_order.order_id IS '订单号（业务唯一键）';
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COMMENT ON COLUMN tb_order.user_id IS '用户 ID（在代码中维护关联，无数据库外键）';
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COMMENT ON COLUMN tb_order.amount IS '金额（分）';
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COMMENT ON COLUMN tb_order.status IS '订单状态：pending, paid, processing, completed, cancelled';
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COMMENT ON COLUMN tb_order.deleted_at IS '软删除时间';
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COMMIT;
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-- 占位，避免空事务报错
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SELECT 1;
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