ThomasDev-de / SQL-snippets

A collection of useful SQL snippets

SQL-snippets

A collection of useful SQL snippets

Time period checks

SELECT * FROM table_events

id	title	start	end
1	Event 1	2022-10-31 10:00:00	2022-10-31 12:00:00
2	Event 2	2022-10-31 13:00:00	2022-10-31 14:00:00
3	Event 3	2022-10-31 15:00:00	2022-10-31 16:00:00
4	Event 4	2022-11-01 15:00:00	2022-11-01 16:00:00

Check if a time period does not intersect other time periods

SET @start = "2022-10-31 10:00:00";
SET @end = "2022-10-31 12:00:00";

SELECT id FROM `table_events`
WHERE 
    (`start` < @start AND `end` < @start)
AND (`start` > @end)

Check if a time period intersects other time periods

SET @start = "2022-10-31 10:00:00";
SET @end = "2022-10-31 12:00:00";

SELECT id FROM `table_events`
WHERE 
    NOT(
            (`start` < @start AND `end` < @start)
        AND (`start` > @end)
    )