Question

我需要编写一个查询以从String中提取特定名称，并在另一列中显示它们，例如，具有此字段的列

列： 第1行：jasdhj31e31jh123hkkj，12l1,3jjds，Amin，02323rdcsnj Row 2 ：jasnasc8918212，ahsahkdjjMina67， 第3行：kasdhakshd，asda，asdasd，121,121，Sina878788kasas

关键字：阿明，米娜，新浪

如何将这些关键字放在另一列中？我不想插入另一列，但是如果这是唯一的解决方案，请告诉我。
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Answer 1

以下是用于BigQuery标准SQL

#standardSQL
WITH keywords AS (
  SELECT keyword
  FROM UNNEST(SPLIT('Amin,Mina,Sina')) keyword
)
SELECT str, STRING_AGG(keyword) keywords_in_str
FROM `project.dataset.table`
CROSS JOIN keywords
WHERE REGEXP_CONTAINS(str, CONCAT(r'(?i)', keyword))
GROUP BY str

您可以使用下面的问题中的虚拟数据进行测试，操作

#standardSQL
WITH `project.dataset.table` AS (
  SELECT 'jasdhMINAj31e31jh123hkkj,12l1,3jjds,Amin,02323rdcsnj' str UNION ALL
  SELECT 'jasnasc8918212,ahsahkdjjMina67,' UNION ALL
  SELECT 'kasdhakshd,asda,asdasd,121,121,Sina878788kasas' 
), keywords AS (
  SELECT keyword
  FROM UNNEST(SPLIT('Amin,Mina,Sina')) keyword
)
SELECT str, STRING_AGG(keyword) keywords_in_str
FROM `project.dataset.table`
CROSS JOIN keywords
WHERE REGEXP_CONTAINS(str, CONCAT(r'(?i)', keyword))
GROUP BY str

结果为

Row str                                                     keywords_in_str  
1   jasdhMINAj31e31jh123hkkj,12l1,3jjds,Amin,02323rdcsnj    Amin,Mina    
2   jasnasc8918212,ahsahkdjjMina67,                         Mina     
3   kasdhakshd,asda,asdasd,121,121,Sina878788kasas          Sina

Answer 2

计算关键字数量

#standardSQL
WITH `project.dataset.table` AS (
  SELECT 'jasdhMINAj31e31jh123hkkj,12l1,3jjds,Amin,02323rdcsnj' str UNION ALL
  SELECT 'jasnasc8918212,ahsahkdjjMina67,' UNION ALL
  SELECT 'kasdhakshd,asda,asdasd,121,121,Sina878788kasas' 
)
select str,array(select as struct countif(lower(x) ="amin") amin,countif(lower(x) ="mina") mina,countif(lower(x)="sina") sina from unnest(x)x)keyword from
(select str,regexp_extract_all(str,"(?i)(Amin|Mina|Sina)")x from `project.dataset.table`)

从字符串中提取键世界，并在另一列中显示

2 个答案: