.alter materialized-view policy retention command

Applies to: ✅ Azure Data Explorer

Changes the materialized view's retention policy. The retention policy controls the mechanism that automatically removes data from tables or materialized views. It's used to remove data whose relevance is age-based.

The retention policy can be configured for a specific table or materialized view, or for an entire database. The policy then applies to all tables in the database that don't override it.

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

.alter materialized-view MaterializedViewName policy retention ArrayOfPolicyObjects

Learn more about syntax conventions.

Sets a retention policy with a 10 day soft-delete period, and enable data recoverability:

.alter materialized-view MyMaterializedView policy retention
```
{
    "SoftDeletePeriod": "10.00:00:00",
    "Recoverability": "Enabled"
}
```