我如何编写一个 PostgreSQL 和 Python 命令从清理这个原始表到结果表，如下所示？

Question

In PostgreSQL, I tried the function trim(unnest(string_to_array to clean and distribute to rows but it will not distribute each value to each other (user_id and dates).

Answer 1

Assuming that dates is defined as jsonb and user_id is defined as int[] you can do something like this:

select u.user_id, 
       d.dates,
       t."type", 
       t.time_start, 
       t.time_end
from the_table t
  cross join unnest(t.user_id) as u(user_id)
  cross join jsonb_array_elements_text(t.dates) as d(dates)
order by u.user_id, d.date  
         

If dates is not a jsonb column, you need to cast it: jsonb_array_elements_text(t.dates::jsonb)

Online example