使用 between 条件连接 ClickHouse 中的表

Question

我发现ClickHouse中的join只支持等式。但是我需要在 ClickHouse 中加入两个具有 'between' 条件的大表。

如何实现这个逻辑？

select a.*, b.name
from a
join b
  on a.id = b.id
  and a.start_dt between b.start_dt and b.end_dt;

遇到错误

Code: 403, e.displayText() = DB::Exception: Invalid expression for JOIN ON. Expected equals expression...

Answer 1

试试这个：

select a.*, b_name
from (
  select a.*, b.name AS b_name, b.start_dt AS b_start_dt, b.end_dt AS b_end_dt
  from a join b using id
  where a.start_dt between b_start_dt and b_end_dt
  )

查看中的一些 JOIN 细节。

使用 between 条件连接 ClickHouse 中的表

Join tables in ClickHouse with between condition

sql

clickhouse