BigQuery Restore Snapshot table to regular table
Snapshot tables are read-only. You can use the CLONE command to restore a snapshot table to a regular BigQuery table
Restore snapshot table example
CREATE TABLE company.employee_new CLONE company_backup.employee
CLONE & Overwrite an existing table
CREATE OR REPLACE TABLE company.employee_new CLONE company_backup.employee
Syntax reference
{CREATE TABLE | CREATE TABLE IF NOT EXISTS | CREATE OR REPLACE TABLE} [[destination_project_name.]destination_dataset_name.]destination_table_name CLONE [[snapshot_project_name.]snapshot_dataset_name.]table_snapshot_name [OPTIONS(table_option_list)]