Cloud SQL provides relational database services for OLTP workloads, but not storage and retrieval of low-latency timeseries data.
variables in sql
SET @ARR_DELAY_THRESH = 15;
SET @DEP_DELAY_THRESH = 20;
# Correct - true negative
select count(dest) from flights where arr_delay < @ARR_DELAY_THRESH and dep_delay < @DEP_DELAY_THRESH;