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docs/sql/common/README.md

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## 📖 内容
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### [关系型数据库面试题 💯](sql/common/sql-interview.md)
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### [关系型数据库面试题 💯](sql-interview.md)
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### [SQL Cheat Sheet](sql/common/sql-cheat-sheet.md)
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### [SQL Cheat Sheet](sql-cheat-sheet.md)
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docs/sql/common/sql-advanced.md

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# 高级 SQL
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> 不同于 [SQL Cheat Sheet](sql-cheat-sheet.md) 中的一般语法,本文主要整理收集一些高级但是很有用的 SQL
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## 数据库
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##
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查看表的基本信息
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```sql
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SELECT * FROM information_schema.tables
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WHERE table_schema = 'test' AND table_name = 'user';
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```
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查看表的列信息
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```sql
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SELECT * FROM information_schema.columns
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WHERE table_schema = 'test' AND table_name = 'user';
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```
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## 参考资料
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- [《SQL 必知必会》](https://item.jd.com/11232698.html)

docs/sql/common/sql-cheat-sheet.md

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# SQL Cheat Sheet
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> 本文针对关系型数据库的一般语法。限于篇幅,本文侧重说明用法,不会展开讲解特性、原理。
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> 本文针对关系型数据库的基本语法。限于篇幅,本文侧重说明用法,不会展开讲解特性、原理。
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>
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> 本文语法主要针对 Mysql。
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> 本文语法主要针对 Mysql,但大部分的语法对其他关系型数据库也适用
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