ClickHouse/docs/zh/engines/table-engines/special/null.md

# Null {#null}

当写入 Null 类型的表时，将忽略数据。从 Null 类型的表中读取时，返回空。

但是，可以在 Null 类型的表上创建物化视图。写入表的数据将转发到视图中。

[原始文章](https://clickhouse.tech/docs/en/operations/table_engines/null/) <!--hide-->
WIP on docs translation/normalization tools (#9783) 2020-03-20 18:20:59 +00:00			`# Null {#null}`
[WIP] translate about table-engines (#3660) * init zh/operations translate * finish table_engines about Integrations part * add table_engine index 2018-11-30 19:26:35 +00:00
[WIP] translate table-engines about special part (#3844) * init zh/operations translate * finish table_engines about Integrations part * add table_engine index * finish table_engines -- For Small Data -- log、tinylog、memory * finish table_engines -- For Small Data -- buffer，external_data * [WIP] translate about table-engines about Special part 2018-12-17 20:03:32 +00:00			`当写入 Null 类型的表时，将忽略数据。从 Null 类型的表中读取时，返回空。`
[WIP] translate about table-engines (#3660) * init zh/operations translate * finish table_engines about Integrations part * add table_engine index 2018-11-30 19:26:35 +00:00
[WIP] translate table-engines about special part (#3844) * init zh/operations translate * finish table_engines about Integrations part * add table_engine index * finish table_engines -- For Small Data -- log、tinylog、memory * finish table_engines -- For Small Data -- buffer，external_data * [WIP] translate about table-engines about Special part 2018-12-17 20:03:32 +00:00			`但是，可以在 Null 类型的表上创建物化视图。写入表的数据将转发到视图中。`
[WIP] translate about table-engines (#3660) * init zh/operations translate * finish table_engines about Integrations part * add table_engine index 2018-11-30 19:26:35 +00:00
Update zh docs and fix en docs (#10125) 2020-04-08 14:22:25 +00:00			`[原始文章](https://clickhouse.tech/docs/en/operations/table_engines/null/) <!--hide-->`