I have noticed an increasing amount of poor practices floating around regarding connecting #BigQuery with Looker/Data Studio that could cost you.
My top suggestions:
- utilize _table_suffix
- build reporting tables
- BI Engine
- Materialized Views
- Caching
Details in 🧵
1/5 When working with sharded tables take advantage of the _table_suffix. It will potentially save you from querying a column and querying multiple tables.
Good: SELECT _table_suffix as date, userId, location... From table_*
Bad: SELECT date, userId, location... FROM table_*