mirror of https://github.com/apache/druid.git
26 lines
548 B
Markdown
26 lines
548 B
Markdown
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---
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layout: doc_page
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---
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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.
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### Table Data Source
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The table data source the most common type. It's represented by a string, or by the full structure:
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```json
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{
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"type": "table",
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"name": <string_value>
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}
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```
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### Query Data Source
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```json
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{
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"type": "query",
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"query": {
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"type": "groupBy",
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...
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}
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}
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```
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