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# sqliteexporter
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Sqlite exporter for the OpenTelemetry Collector and OpenTelemetry Go.
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Note that this is an alpha release, tables and column names may change in the
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future. [golang-migrate](https://pkg.go.dev/github.com/golang-migrate/migrate/v4)
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is used to manage updates to the database schema.
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## Configuration Options
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* `path` [no default]: Path to the Sqlite database file. If the file does not
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exist, it will be created on startup.
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## Example
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```yaml
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exporters:
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sqlite:
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path: local.db
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```
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## Tables
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Currently, this exporter creates 3 tables to store trace span data:
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* `spans`: Each individual spans
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* `events`: Span events, with a `span_id` to JOIN with the `spans` table
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* `links`: Span links, with a `parent_span_id` to JOIN with the `spans` table
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The Resource and Instrumentation Library are inlined in the `spans` table. This
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creates some duplication but makes the schema much easier to navigate and query.
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Attributes are inlined as JSON-encoded string and can be queried using Sqlite's
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[JSON functions and operators](https://www.sqlite.org/json1.html).
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## Note on JSONB data type
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Sqlite recently added [support for the JSONB data type](https://sqlite.org/draft/jsonb.html)
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which improves performance on JSON-encoded data. Support for this feature is
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planned for the future.
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