谷歌 bigquery 中包含的字符串的等价物

Question

我有一张如下所示的表格

我想创建two new binary columns指示主题是否有steroids和aspirin。我希望在Postgresql and google bigquery

我尝试了以下但不起作用

select subject_id
case when lower(drug) like ('%cortisol%','%cortisone%','%dexamethasone%') 
then 1 else 0 end as steroids,
case when lower(drug) like ('%peptide%','%paracetamol%') 
then 1 else 0 end as aspirin,
from db.Team01.Table_1


SELECT 
db.Team01.Table_1.drug
FROM `table_1`,
UNNEST(table_1.drug) drug
WHERE REGEXP_CONTAINS( db.Team01.Table_1.drug,r'%cortisol%','%cortisone%','%dexamethasone%')

我希望我的输出如下所示

Answer 1

以下是 BigQuery 标准 SQL

#standardSQL
SELECT 
  subject_id,
  SUM(CASE WHEN REGEXP_CONTAINS(LOWER(drug), r'cortisol|cortisone|dexamethasone') THEN 1 ELSE 0 END) AS steroids,
  SUM(CASE WHEN REGEXP_CONTAINS(LOWER(drug), r'peptide|paracetamol') THEN 1 ELSE 0 END) AS aspirin
FROM `db.Team01.Table_1`
GROUP BY subject_id   

如果适用于您问题中的样本数据 - 结果是

Row subject_id  steroids    aspirin  
1   1           3           1    
2   2           1           1     

LIKE on steroids注意：我使用的是REGEXP_CONTAINS，而不是简单的 LIKE 以冗长且冗余的文本结尾