BigQuery - 在不丢失 'null' 值的情况下进行过滤

Question

我尝试过滤数据库，但不幸的是我丢失了 'null' 值：

样本看起来像

Name | City | Sold
Nike | NYC  | 15
null | SFO  | 20
Mega | SEA  | 10
null | null | 8
nike | CHI  | 12

我尝试在没有 Nike 的情况下以任何方式查找数据，但是当我去寻找

Select ...
where not lower(Name) contains "nike"

但后来我只找到

Mega | SEA | 10

并且 Name 的 null 值的所有行也都消失了。我怎样才能防止它们被删除？谢谢

Answer 1

看到这个：

select * from 
(select string(NULL) as name,'SFO' as city, 20 as sold),
(select 'Nike' as name,'NYC' as city, 15 as sold),
where not lower(name) contains 'nike2' or name is null

returns

+-----+------+------+------+---+
| Row | name | city | sold |   |
+-----+------+------+------+---+
|   1 | null | SFO  |   20 |   |
|   2 | Nike | NYC  |   15 |   |
+-----+------+------+------+---+

BigQuery - 在不丢失 'null' 值的情况下进行过滤

BigQuery - filtering without losing 'null' values

null

contains

google-bigquery