mirror of
https://github.com/ClickHouse/ClickHouse.git
synced 2024-12-14 18:32:29 +00:00
35 lines
1.1 KiB
Markdown
35 lines
1.1 KiB
Markdown
|
<a name="dicts-external_dicts_dict"></a>
|
|||
|
|
|
|||
|
|
# Configuring an external dictionary
|
|||
|
|
|
|||
|
|
The dictionary configuration has the following structure:
|
|||
|
|
|
|||
|
|
```xml
|
|||
|
|
<dictionary>
|
|||
|
|
<name>dict_name</name>
|
|||
|
|
|
|||
|
|
<source>
|
|||
|
|
<!-- Source configuration -->
|
|||
|
|
</source>
|
|||
|
|
|
|||
|
|
<layout>
|
|||
|
|
<!-- Memory layout configuration -->
|
|||
|
|
</layout>
|
|||
|
|
|
|||
|
|
<structure>
|
|||
|
|
<!-- Complex key configuration -->
|
|||
|
|
</structure>
|
|||
|
|
|
|||
|
|
<lifetime>
|
|||
|
|
<!-- Lifetime of dictionary in memory -->
|
|||
|
|
</lifetime>
|
|||
|
|
</dictionary>
|
|||
|
|
```
|
|||
|
|
|
|||
|
|
- name – The identifier that can be used to access the dictionary. Use the characters `[a-zA-Z0-9_\-]`.
|
|||
|
|
- [source](external_dicts_dict_sources.html/#dicts-external_dicts_dict_sources) – Source of the dictionary.
|
|||
|
|
- [layout](external_dicts_dict_layout.md#dicts-external_dicts_dict_layout) – Location of the dictionary in memory.
|
|||
|
|
- [structure](external_dicts_dict_structure.md#dicts-external_dicts_dict_structure) – Structure of the dictionary. A key and attributes that can be retrieved by this key.
|
|||
|
|
- [lifetime](external_dicts_dict_lifetime.md#dicts-external_dicts_dict_lifetime) – How frequently to update dictionaries.
|
|||
|
|
|