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ClickHouse/docs/zh/operations/table_engines/set.md

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[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
# Set
[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
始终存在于 RAM 中的数据集。它适用于IN运算符的右侧（请参见 "IN运算符" 部分）。
[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
可以使用 INSERT 向表中插入数据。新元素将添加到数据集中，而重复项将被忽略。但是不能对此类型表执行 SELECT 语句。检索数据的唯一方法是在 IN 运算符的右半部分使用它。
[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
数据始终存在于 RAM 中。对于 INSERT，插入数据块也会写入磁盘上的表目录。启动服务器时，此数据将加载到 RAM。也就是说，重新启动后，数据仍然存在。
[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
对于强制服务器重启，磁盘上的数据块可能会丢失或损坏。在数据块损坏的情况下，可能需要手动删除包含损坏数据的文件。
[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
[Original article](https://clickhouse.yandex/docs/en/operations/table_engines/set/) <!--hide-->
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