19 lines
408 B
Markdown
19 lines
408 B
Markdown
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# 单表无条件查询
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## 一、select语句的一般**格式**（重点）
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```sql
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SELECT 字段名 (多个字段用逗号隔开)
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FROM 表名
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[WHERE 条件表达式]
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[GROUP BY 字段名(分组)]
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[HAVING 条件表达式(筛选)]
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[ORDER BY 字段名(排序)]
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[LIMIT 数字 (只取前N个)];
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```
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# 二、单表无条件查询
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```sql
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select [all|distinct] 字段名
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from 表名
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limit[起始值,终点值];
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```
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