что такое bigquery, эквивалентное переменным mysql, например?
SET @fromdate = '2014-01-01 00:00:00', -- dates for after 2013
@todate='2015-01-01 00:00:00',
@bfromdate = '2005-01-01 00:00:00', -- dates for before 2013
@btodate = '2005-01-01 00:00:00',
@achfromdate = '2013-01-01 00:00:00', -- dates for ACH without submit time in 2013
@achtodate = '2013-01-01 00:00:00',
@currency="USD";