.alter table policy sharding command

Applies to: ✅ Azure Data Explorer

Use this command to change the table sharding policy. Use the sharding policy to manage data sharding for databases and tables.

The sharding policy defines if and how Extents (data shards) should be sealed. When a database is created, it contains the default data sharding policy. This policy is inherited by all tables created in the database (unless the policy is explicitly overridden at the table level).

You must have at least Table Admin permissions to run this command.

.alter table TableName policy sharding PolicyObject

Learn more about syntax conventions.

Returns a JSON representation of the policy.

The following command returns the updated extents sharding policy for the table.

.alter table MyTable policy sharding
```
{
    "ShardEngineMaxRowCount" : 750000,
    "ShardEngineMaxExtentSizeInMb" : 1024,
    "ShardEngineMaxOriginalSizeInMb" : 2048
}
```

• Data sharding policy
• .alter database policy sharding command
• .show table policy sharding command
• .alter-merge table policy sharding command
• .delete table policy sharding command
• Extents (data shards)