* The VOLATILE clause is used to define functions that may return different values for different rows, even when provided with the same inputs.
* This clause is suitable for non-deterministic functions like those that involve random numbers or session-specific data.
References:
* Snowflake Documentation: User-Defined Functions
* Snowflake SQL Functions

The credit consumption for maintaining a materialized view is impacted by how often the base table changes and whether the materialized view has a cluster key defined (D). Changes to the base table can trigger a refresh of the materialized view, consuming credits. Additionally, having a cluster key defined can optimize the performance and credit usage during the materialized view's maintenance. Reference: SnowPro Core Certification materialized view credit consumption

In Snowflake, shares are used to share data between Snowflake accounts. When creating a share, it is possible to grant access to the share to roles within the Snowflake account that is creating the share. The type of role that can be granted to a share is a Custom role. Custom roles are user-defined roles that account administrators can create to manage access control in a more granular way. Unlike predefined roles such as ACCOUNTADMIN or SYSADMIN, custom roles can be tailored with specific privileges to meet the security and access requirements of different groups within an organization.
Granting a custom role access to a share enables users associated with that role to access the shared data if the share is received by another Snowflake account. It is important to carefully manage the privileges granted to custom roles to ensure that data sharing aligns with organizational policies and data governance standards.
Reference:
Snowflake Documentation on Shares: Shares
Snowflake Documentation on Roles: Access Control