DELETE FROM table_name ORDER BY id ASC LIMIT total_rows - 3000;语法错误
时间: 2024-03-14 22:47:43 浏览: 129
非常抱歉,我的回答还是有误。正确的 SQL 语句应该是:
```
DELETE FROM table_name
ORDER BY id ASC
LIMIT (SELECT COUNT(*) - 3000 FROM table_name);
```
这条语句将按照 id 字段升序排列,然后删除除最新的 3000 行数据之外的所有数据。其中,子查询 `(SELECT COUNT(*) - 3000 FROM table_name)` 会计算出需要删除的行数,从而实现动态的删除操作。请注意,执行此操作需要谨慎,因为它会永久删除数据,无法撤销。
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DELETE FROM table_name ORDER BY id DESC LIMIT total_rows - 3000;语法错误
抱歉,我之前的回答有误。正确的 SQL 语句应该是:
```
DELETE FROM table_name
ORDER BY id ASC
LIMIT total_rows - 3000;
```
这条语句将按照 id 字段升序排列,然后删除除最新的 3000 行数据之外的所有数据。请注意,执行此操作需要谨慎,因为它会永久删除数据,无法撤销。
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