mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-11-17 05:03:20 +00:00
12 lines
363 B
Markdown
12 lines
363 B
Markdown
|
# Lazy
|
||
|
|
|
||
|
|
Works like `Ordinary`, but keeps tables in RAM only `expiration_time_in_seconds` seconds after last access. Can be used only with *Log tables.
|
||
|
|
|
||
|
|
It's optimized for storing many small *Log tables, for which there are a long time interval between accesses.
|
||
|
|
|
||
|
|
## Creating a Database
|
||
|
|
|
||
|
|
```
|
||
|
|
CREATE DATABASE testlazy ENGINE = Lazy(expiration_time_in_seconds);
|
||
|
|
```
|