> ## Documentation Index
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> System table which shows the content of the query condition cache.

# system.query_condition_cache

<Info>
  **Querying in ClickHouse Cloud**

  The data in this system table is held locally on each node in ClickHouse Cloud. Obtaining a complete view of all data, therefore, requires the `clusterAllReplicas` function. See [here](/reference/system-tables/overview#system-tables-in-clickhouse-cloud) for further details.
</Info>

<h2 id="description">
  Description
</h2>

Shows the content of the [query condition cache](/concepts/features/performance/caches/query-condition-cache).

<h2 id="columns">
  Columns
</h2>

* `key_hash` ([UInt128](/reference/data-types/index)) — Hash of (table\_uuid, part\_name, condition\_hash).
* `entry_size` ([UInt64](/reference/data-types/index)) — The size of the entry in bytes.
* `matching_marks` ([String](/reference/data-types/index)) — Matching marks.

<h2 id="example">
  Example
</h2>

```sql title="Query" theme={null}
SELECT * FROM system.query_condition_cache FORMAT Vertical;
```

```text title="Response" theme={null}
Row 1:
──────
table_uuid:     28270a24-ea27-49f6-99cd-97b9bee976ac
part_name:      all_1_1_0
condition:      or(equals(b, 10000_UInt16), equals(c, 10000_UInt16))
condition_hash: 5456494897146899690 -- 5.46 quintillion
entry_size:     40
matching_marks: 111111110000000000000000000000000000000000000000000000000111111110000000000000000

1 row in set. Elapsed: 0.004 sec.
```