The query is executing a clone operation on an existing tablet_saleswith an offset to account for the retention time. The syntax used is correct for cloning a table in Snowflake, and the use of theat(offset => -60*30)clause is valid. This specifies that the clone should be based on the state of the table 30 minutes prior (60 seconds *
30). Assuming the tablet_salesexists and has been modified within the last 30 minutes, and considering the data_retention_time_in_daysisset to 1 day (which enables time travel queries for the past 24 hours), the table t_sales_clonewould be successfully created based on the state oft_sales30 minutes before the clone command was issued.