We need to produce article about "sqlserver数据库迁移到mysql" without title (they said no title). Must be 6-8 paragraphs, each 150-250 words, total >=1500 characters? Wait they said "字数要求：必须写满1500字，不能少于1050字！" So must be at least 1500 Chinese characters (words? Chinese characters). Must be 6-8 paragraphs, each 150-250 words. That's ambiguous: "150-250字" likely means characters? Probably Chinese characters. So each paragraph 150-250 characters, total 6-8 paragraphs. Need total >=1500 characters. 6250 = 1500, so we can aim for 7 paragraphs of ~215 characters each. Must be in natural, conversational style, no AI-sounding words. Must avoid banned words. Must not use title. Must directly output the article.
We need to write in Chinese, each paragraph 150-250 characters. Let's craft 7 paragraphs each ~220 characters. Ensure total >=1500 characters. Let's count approximate characters.
I'll draft paragraphs:
Paragraph1: 引入话题, talk about why migration needed.
Paragraph2: 前期准备, analysis of schema differences.
Paragraph3: 数据迁移工具和步骤.
Paragraph4: 迁移后验证, performance testing.
Paragraph5: 常见坑点, 事务和索引问题.
Paragraph6: 迁移后的优化和维护建议.
Paragraph7: 总结观点, 呼应标题.
Now count characters. Let's write each paragraph about 220 characters.
I'll write them and then count roughly.
Paragraph1 (approx 220 characters):
"sqlserver数据库迁移到mysql的过程，听起来像是把一座老旧的仓库搬到新开的超市。老旧系统里积累的业务逻辑、存储过程、以及各种自定义函数，都需要重新梳理。很多团队在迁移之前会先做一次彻底的需求盘点，弄清楚到底有哪些表、视图和索引在使用，避免在搬家途中遗漏重要资源。"
Count characters: Let's count manually (including punctuation). I'll count roughly:
"sqlserver数据库迁移到mysql的过程，听起来像是把一座老旧的仓库搬到新开的超市。老旧系统里积累的业务逻辑、存储过程、以及各种自定义函数，都需要重新梳理。很多团队在迁移之前会先做一次彻底的需求盘点，弄清楚到底有哪些表、视图和索引在使用，避免在搬家途中遗漏重要资源。"
Let's count characters: I'll approximate 150? Might be less. Need 150-250 characters per paragraph. Let's aim for ~210 characters.
I'll count precisely later. But I can approximate.
Better to write paragraphs of about 200 characters.
I'll craft paragraphs with about 200 Chinese characters.
"sqlserver数据库迁移到mysql的过程，听起来像是把一座老旧的仓库搬到新开的超市。老旧系统里积累的业务逻辑、存储过程、以及各种自定义函数，都需要重新梳理。很多团队在迁移之前会先做一次彻底的需求盘点，弄清楚到底有哪些表、视图和索引在使用，避免在搬家途中遗漏重要资源。"
Let's count: I'll count characters including punctuation. I'll count quickly:
(sqlserver数据库迁移到mysql的过程，听起来像是把一座老旧的仓库搬到新开的超市。) that's 30? Let's count more systematically:
I'll copy into a counting tool mentally? Hard. But approximate 200 is okay.
I'll produce 7 paragraphs each around 200-230 characters. Ensure total >=1500 characters. 7215 = 1505 characters. Good.
Now write paragraphs.
"在正式动手之前，先对源库进行一次全表扫描，记录字段类型、长度和约束条件。sqlserver的varchar(max)在mysql里对应的是longtext，datetime2要转成datetime或timestamp，还有唯一索引的实现细节也会有差异。把这些信息写进迁移清单，能够帮助后面的脚本更精准地映射。"
"迁移工具方面，有开源的sqlserver-to-mysql脚本、商业的迁移套件，甚至直接使用odbc链接进行导出。最常用的做法是先把数据导出成csv或sql dump，然后在mysql端导入。导出时要注意字符集统一，尽量使用utf8mb4，避免出现乱码或截断。"
"数据导入后，需要检查关键表的记录完整性，尤其是外键和唯一约束。可以用计数或校验脚本对比迁移前后的行数，再跑一次业务查询确认结果一致。性能测试也很关键，特别是那些依赖于sqlserver特有函数的报表，可能在mysql里需要重写或寻找替代方案。"
"迁移过程中常见的坑包括自动映射的默认值不一致、触发器的顺序差异以及分区表的支持。比如sqlserver的identity列在mysql里需要改为auto_increment，而某些系统函数如isnull在兼容层面上会产生轻微差异。遇到这些细节时，往往需要手动修改脚本或在迁移后补充修复步骤。"
"迁移完成后，别急着关掉老系统。先在mysql上搭建监控告警，观察查询延迟、锁等待和磁盘使用情况。如果发现某些查询仍然比较慢，可以考虑调优索引、分区或查询重写。长期来看，mysql的开源生态在运维工具和备份策略上更具灵活性，值得持续投入。"
"总的来说，sqlserver数据库迁移到mysql并不是一次性的搬家操作，而是需要从需求梳理、工具选型到后期验证的全链条规划。只要把每个环节都细化、把潜在风险提前解决，迁移过程就会相对顺畅，最终还能收获更轻量、更易扩展的数据库平台。"
Now need to ensure each paragraph 150-250 characters. Let's approximate length.
I'll count characters of paragraph1 quickly:
"sqlserver数据库迁移到mysql的过程，听起来像是把一座老旧的仓库搬到新开的超市。老旧系统里积累的业务逻辑、存储过程、以及各种自定义函数，都需要重新梳理。很多团队在迁移之前会先做一次彻底的需求盘点，弄清楚到底有哪些表、视图和索引在使用，避免在搬家途中遗漏重要资源。"
I think it's around 120-130 characters maybe less. Let's count more precisely: I'll count characters manually (including punctuation).
I'll copy paragraph1 and count:
s q l s e r v e r 中 ... Let's count using groups.
I'll write with numbers:
