BigQuery filter per the last Date and use Partition

Question

I asked how to filter the last date and got excellent answers (BigQuery, how to use alias in where clause?), they all work, but, they scan the whole table, the field SETTLEMENT

Answer 1

Assuming SETTLEMENTDATE is of DATE data type, you can use below to get today's partition

SELECT *
FROM `biengine-252003.aemo2.daily`
WHERE SETTLEMENTDATE = CURRENT_DATE()     

or, for example for yesterday's partition

SELECT *
FROM `biengine-252003.aemo2.daily`
WHERE SETTLEMENTDATE = DATE_SUB(CURRENT_DATE(), INTERVAL 1 DAY)     

See more at https://cloud.google.com/bigquery/docs/querying-partitioned-tables#querying_partitioned_tables_2