85ba15c564
- Go + Gin + GORM + PostgreSQL backend - RESTful API for material management - Docker deployment support - Database partitioning for billion-scale data - API documentation 🤖 Generated with [Claude Code](https://claude.com/claude-code) Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
12 lines
425 B
SQL
12 lines
425 B
SQL
-- ============================================
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-- Migration: 004_add_version_column.sql
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-- Purpose: 添加乐观锁版本字段
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-- ============================================
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-- 添加 version 字段到 materials 表 (用于乐观锁)
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ALTER TABLE materials
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ADD COLUMN IF NOT EXISTS version BIGINT NOT NULL DEFAULT 0;
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-- 注释
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COMMENT ON COLUMN materials.version IS '乐观锁版本号，用于防止并发更新覆盖';
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