仅查询符合条件的元素

Question

Let's say I have the following table:

id | packageName   | app | timestamp
------------------------------------
1  | io.kodular... | A   | 111
2  | io.kodular... | B   | 222
3  | io.kodular... | A   | 444
4  | io.kodular... | C   | 555

How can I select elements grouped by app that have a timestamp higher than 333 , but they don't have any record lower than that number?

I need to get only app C , as app A has a lower timestamp record than 333. I have tried the following query, but it returns both app A and app C :

SELECT app FROM table WHERE timestamp>=333 AND NOT timestamp<333 GROUP BY app;

Any idea how can I perform that query?

Answer 1

Use conditional aggregation:

SELECT app
FROM table t
GROUP BY app
HAVING MIN(timestamp) >= 333 ;