Advantages of Materialized View
- Materialized View automatically refreshes the data in the background whenever the data is updated in the base table without any manual intervention.
- Querying data on the Materialized View takes lesser time, as the data is pre-computed in comparison to the base table.
- Bigquery reroutes the query to a Materialized View if, it’s running a query or subquery on the base table serving the materialized view. This makes the view cost-effective and time saving rather than querying on the base table.
What Is Materialized View In Big Query ?
A materialized view is a precomputed snapshot of data in BigQuery, which stores the data physically from the output of a query onto the disk. It automatically refreshes the data from its base table periodically, ensuring the data remains up-to-date with changes to its underlying base tables. They are faster as compared to logical views because of their significant performance.
Materialized View overcomes the need to fetch data from the base tables every time the query is executed. Instead, the precomputed data stored in the view can be quickly accessed, resulting in faster query execution and efficiency.
Base Table : A base table is a Bigquery table where the actual data resides.
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