如何正确编写我的 clickhouse sql 查询？

Posted 2023-03-25

【中文标题】如何正确编写我的 clickhouse sql 查询？

【英文标题】：How to write my clickhouse sql query correctly?

【发布时间】：2020-11-26 08:52:15

【问题描述】：

我写了一个sql查询：

WITH
  type = "id" AND match(value, '*** ID WAS ACTIVATED ***') as id_activ
SELECT
  multiIf(
        id_activ, 'id_activ',
        NULL) as case,
  date,
  value
FROM my.data.base

但是它不起作用。由于这部分出现问题：match(value, '*** ID WAS ACTIVATED ***')。当我尝试这个时，它完美地工作：

WITH
  type = "id" AND value LIKE '%*** ID WAS ACTIVATED ***%' as id_activ
SELECT
  multiIf(
        id_activ, 'id_activ',
        NULL) as case,
  date,
  value
FROM my.data.base

这是我在比赛中使用的带有该模式的完整消息：

*** ID WAS ACTIVATED *** : Values expired   

我怎样才能修复它并编写匹配正确的查询？

与包含方括号的查询相同：

WITH
  type = "id" AND match(value, 'Values processed [NUMBERS]') as id_number
SELECT
  multiIf(
        id_number, 'id_number',
        NULL) as case,
  date,
  value
FROM my.data.base

【参考方案1】：

match() 匹配正则表达式

“等价于”

LIKE '%*** ID WAS ACTIVATED ***%'

是

match(value, '.*\*\*\* ID WAS ACTIVATED \*\*\*.*')

https://regex101.com/r/XkRmEY/1