How to get the first wire_open and wire_close group in the data

Question

This is the data I want to output, it matches the blue line and the photo of the desired output I have attached, please take a look and use the SQL query to get the desired result

Answer 1

测试一下：

WITH
cte AS (
    SELECT *, SUM(delay_ping_type = 'wire_close') OVER (ORDER BY last_updated_on DESC) group_no
    FROM source_table
)
SELECT MIN(last_updated_on) wire_open, 
       MAX(last_updated_on) wire_close 
FROM cte
-- WHERE group_no > 0   -- removes final open without close
GROUP BY group_no
-- HAVING wire_open < wire_close  -- removes close without matched open
-- HAVING MIN(last_updated_on) < MAX(last_updated_on) -- the same for PostgreSQL
;

https://www.db-fiddle.com/f/njuPYFYug87jTWKHHv6yRK/2 （感谢 @lemon 的小提琴）。