mirror of https://github.com/apache/druid.git
26 lines
548 B
Markdown
26 lines
548 B
Markdown
---
|
|
layout: doc_page
|
|
---
|
|
A data source is the Druid equivalent of a database table. However, a query can also masquerade as a data source, providing subquery-like functionality. Query data sources are currently only supported by [GroupBy](GroupByQuery.html) queries.
|
|
|
|
### Table Data Source
|
|
The table data source the most common type. It's represented by a string, or by the full structure:
|
|
|
|
```json
|
|
{
|
|
"type": "table",
|
|
"name": <string_value>
|
|
}
|
|
```
|
|
|
|
### Query Data Source
|
|
```json
|
|
{
|
|
"type": "query",
|
|
"query": {
|
|
"type": "groupBy",
|
|
...
|
|
}
|
|
}
|
|
```
|