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title: "ClickHouse 表引擎之 Null"
date: 2020-10-08T19:11:00+08:00
lastmod: 2020-10-08T19:11:00+08:00
tags: []
categories: ["clickhouse"]
---
# Null 表引擎简介
- 类似 /dev/null忽略写入的任何数据查询时返回空表
- 如果物化视图不需要保留源表数据,则可设置源表为 Null 引擎
# 创建 Null 表引擎
- 声明
```sql
ENGINE = Null
```