Du kan använda en WITH-sats. Det är inte idealiskt, men det får jobbet gjort.
-- Set your variables here
WITH vars AS (
SELECT '2018-01-01' as from_date,
'2018-05-01' as to_date
)
-- Then use them by pulling from vars with a SELECT clause
SELECT *
FROM your_table
WHERE date_column BETWEEN
CAST((SELECT from_date FROM vars) as date)
AND
CAST((SELECT to_date FROM vars) as date)
Eller ännu mindre ordrik:
#standardSQL
-- Set your variables here
WITH vars AS (
SELECT DATE '2018-01-01' as from_date,
DATE '2018-05-01' as to_date
)
-- Then use them by pulling from vars with a SELECT clause
SELECT *
FROM your_table, vars
WHERE date_column BETWEEN from_date AND to_date