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Update SQL support docs for Blackhole #18534

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Aug 7, 2023
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Update SQL support docs for Blackhole #18534

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14 changes: 8 additions & 6 deletions docs/src/main/sphinx/connector/blackhole.md
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Expand Up @@ -14,11 +14,6 @@ In such cases, writes behave in the same way, but reads
always return the specified number of some constant rows.
You shouldn't rely on the content of such rows.

:::{warning}
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This connector does not work properly with multiple coordinators,
since each coordinator has different metadata.
:::

## Configuration

Create `etc/catalog/example.properties` to mount the `blackhole` connector
Expand Down Expand Up @@ -121,12 +116,19 @@ additional features:
- {doc}`/sql/merge`
- {doc}`/sql/create-table`
- {doc}`/sql/create-table-as`
- {doc}`/sql/show-create-table`
- {doc}`/sql/drop-table`
- {doc}`/sql/create-schema`
- {doc}`/sql/drop-schema`
- {doc}`/sql/create-view`
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- {doc}`/sql/show-create-view`
- {doc}`/sql/drop-view`
- {doc}`/sql/create-materialized-view`
- {doc}`/sql/show-create-materialized-view`
- {doc}`/sql/drop-materialized-view`
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:::{note}
The connector discards all written data. While read operations are supported,
they will return rows with all NULL values, with the number of rows controlled
they return rows with all NULL values, with the number of rows controlled
via table properties.
:::