使用大于符号来比较BQ中的日期

Question

大于符号用于比较日期，使用这个或任何其他可用的解决方案是否正确？

#standardSQL
with table1 as(
select "ProductA" as products, date '2017-1-20' as end_date union all
select "ProductB" as products, date '2017-6-20' as end_date union all
select "ProductC" as products, date '2018-1-20' as end_date union all
select "ProductD" as products, date '2018-6-20' as end_date
)
select products,end_date,if(current_date()>end_date,'outdated','current') status from table1

Answer 1

SELECT products,end_date, if(DATE_SUB(current_date(), INTERVAL 1 DAY)>end_date,'outdated','current') status from table1;

这是使用函数DATE_SUB获得相同结果的另一种方法。 您可以将许多不同的functions用于date数据类型。 operator“＆gt;”处理许多数据类型，包括date类型。