第十六章 sql Mode 及相关问题

Love The Way You Lie 2023-07-11 06:11 9阅读 0赞

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70][]

**mode示例：**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 1][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 2][]

**mode可以校验 日期的合法性**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 3][]

**mode 严格模式可以避免一下结果为null的情况**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 4][]

**mode   NO\_BACKSLASH\_ESCAPES 可以将“\\” 当做普通字符，而不是转译字符**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 5][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 6][]

**mode PIPES\_AS\_CONCAT 将‘||’视为字符串的连接符。类似java字符串拼接的 “+”**

**mysql 默认的mode 包含 PIPES\_AS\_CONCAT**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 7][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 8][]

**数据迁移常用组合mode**

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 9][]

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 10][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70]: https://img-blog.csdnimg.cn/2020030415102732.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/20200304151828329.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20200304152654354.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20200304153433521.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20200304153958570.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 5]: https://img-blog.csdnimg.cn/20200304154351802.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 6]: https://img-blog.csdnimg.cn/20200304154608884.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 7]: https://img-blog.csdnimg.cn/20200304154854959.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 8]: https://img-blog.csdnimg.cn/20200304161737107.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 9]: https://img-blog.csdnimg.cn/20200304162407766.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5_size_16_color_FFFFFF_t_70 10]: https://img-blog.csdnimg.cn/2020030416250396.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2Jvc3Nfd2F5,size_16,color_FFFFFF,t_70