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38 lines
2.7 KiB
Markdown
38 lines
2.7 KiB
Markdown
# system.databases {#system-databases}
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Contains information about the databases that are available to the current user.
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Columns:
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- `name` ([String](../../sql-reference/data-types/string.md)) — Database name.
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- `engine` ([String](../../sql-reference/data-types/string.md)) — [Database engine](../../engines/database-engines/index.md).
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- `data_path` ([String](../../sql-reference/data-types/string.md)) — Data path.
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- `metadata_path` ([String](../../sql-reference/data-types/enum.md)) — Metadata path.
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- `uuid` ([UUID](../../sql-reference/data-types/uuid.md)) — Database UUID.
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- `comment` ([String](../../sql-reference/data-types/enum.md)) — Database comment.
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The `name` column from this system table is used for implementing the `SHOW DATABASES` query.
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**Example**
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Create a database.
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``` sql
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CREATE DATABASE test;
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```
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Check all of the available databases to the user.
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``` sql
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SELECT * FROM system.databases;
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```
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``` text
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┌─name───────────────┬─engine─┬─data_path──────────────────┬─metadata_path───────────────────────────────────────────────────────┬─uuid─────────────────────────────────┬─comment─┐
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│ INFORMATION_SCHEMA │ Memory │ /var/lib/clickhouse/ │ │ 00000000-0000-0000-0000-000000000000 │ │
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│ default │ Atomic │ /var/lib/clickhouse/store/ │ /var/lib/clickhouse/store/d31/d317b4bd-3595-4386-81ee-c2334694128a/ │ 24363899-31d7-42a0-a436-389931d752a0 │ │
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│ information_schema │ Memory │ /var/lib/clickhouse/ │ │ 00000000-0000-0000-0000-000000000000 │ │
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│ system │ Atomic │ /var/lib/clickhouse/store/ │ /var/lib/clickhouse/store/1d1/1d1c869d-e465-4b1b-a51f-be033436ebf9/ │ 03e9f3d1-cc88-4a49-83e9-f3d1cc881a49 │ │
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└────────────────────┴────────┴────────────────────────────┴─────────────────────────────────────────────────────────────────────┴──────────────────────────────────────┴─────────┘
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```
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