# Configure client-side timestamps for a table in Amazon Keyspaces
<a name="client-side-timestamps-existing-table"></a>

Follow these examples to turn on client-side timestamps for existing tables using the Amazon Keyspaces AWS Management Console, Cassandra Query Language (CQL), or the AWS Command Line Interface.

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#### [ Console ]

**To turn on client-side timestamps for an existing table (console)**

1. Sign in to the AWS Management Console, and open the Amazon Keyspaces console at [https://console.aws.amazon.com/keyspaces/home](https://console.aws.amazon.com/keyspaces/home).

1. Choose the table that you want to update, and then choose **Additional settings** tab.

1. On the **Additional settings** tab, go to **Modify client-side timestamps** and select **Turn on client-side timestamps**

1. Choose **Save changes** to change the settings of the table.

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#### [ Cassandra Query Language (CQL) ]

**Using a CQL statement**

1. Turn on client-side timestamps for an existing table with the `ALTER TABLE` CQL statement.

   ```
   ALTER TABLE my_table WITH custom_properties = {'client_side_timestamps': {'status': 'enabled'}};;
   ```

1. To confirm the client-side timestamps settings for the new table, use a `SELECT` statement to review the `custom_properties` as shown in the following example. 

   ```
   SELECT custom_properties from system_schema_mcs.tables where keyspace_name = 'my_keyspace' and table_name = 'my_table';
   ```

   The output of this statement shows the status for client-side timestamps.

   ```
   'client_side_timestamps': {'status': 'enabled'}
   ```

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#### [ AWS CLI ]

**Using the AWS CLI**

1. You can turn on client-side timestamps for an existing table using the AWS CLI using the following example.

   ```
   ./aws keyspaces update-table \
   --keyspace-name my_keyspace \
   --table-name my_table \
   --client-side-timestamps 'status=ENABLED'
   ```

1. To confirm that client-side timestamps are turned on for the table, run the following code.

   ```
   ./aws keyspaces get-table \
   --keyspace-name my_keyspace \
   --table-name my_table
   ```

   The output should look similar to this example and state the status for client-side timestamps as `ENABLED`.

   ```
   {
       "keyspaceName": "my_keyspace",
       "tableName": "my_table",
       "resourceArn": "arn:aws:cassandra:us-east-1:111122223333:/keyspace/my_keyspace/table/my_table",
       "creationTimestamp": 1662681312.906,
       "status": "ACTIVE",
       "schemaDefinition": {
           "allColumns": [
               {
                   "name": "id",
                   "type": "int"
               },
               {
                   "name": "date",
                   "type": "timestamp"
               },
               {
                   "name": "name",
                   "type": "text"
               }
           ],
           "partitionKeys": [
               {
                   "name": "id"
               }
           ],
           "clusteringKeys": [],
           "staticColumns": []
       },
       "capacitySpecification": {
           "throughputMode": "PAY_PER_REQUEST",
           "lastUpdateToPayPerRequestTimestamp": 1662681312.906
       },
       "encryptionSpecification": {
           "type": "AWS_OWNED_KMS_KEY"
       },
       "pointInTimeRecovery": {
           "status": "DISABLED"
       },
       "clientSideTimestamps": {
           "status": "ENABLED"
       },
       "ttl": {
           "status": "ENABLED"
       },
       "defaultTimeToLive": 0,
       "comment": {
           "message": ""
       }
   }
   ```

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