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Editorial Team
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Asked: 2026-06-04T16:30:21+00:00

lets say I have two tables: TableA ID, Time, Size 0 5:00 600 1

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lets say I have two tables:

TableA
ID,    Time,   Size

0      5:00    600
1      8:00    800
2      7:00    100
3      1:50    140
4      2:40    300 
12     3:40    300

TableB
ID,    Time,   Size

8      5:00    600
1      8:00    800
2      8:00    900
3      1:50    140
5      2:40    300 
12     3:40    300

Now I would like to compare these two Tables: give all rows from Table A and B where the IDs are same (or lets say where the IDs are existing in both of the Tables) but lower then 12 – so that would kick out table A ID 0, 4, 12 and from table B ID 8, 5, 12

After that I would have only 3 rows left. Now I would like to kick out all rows where there is one or more difference between the whole TableA row ID == TableB row ID

At the end there would be (if I see that correct) as output:

ID,    Time,   Size
1      8:00    800
3      1:50    140

For this solution I need for sure intersect and maybe minus. At first I tought this SQL statement would do what I want:

select * from TableA where ID < 12 intersect select * from TableB where ID < 12 
minus 
select * from TableB where ID < 12;

But this is not working that well. Ist because of the intersect, Im using intersect for the whole row, I should use intersect for only the IDs and IF I have the intersect of the IDs (that would be 1,2,3) then I have to use ID TableA with ID 1,2,3 minus TableB with ID 1,2,3. But how? Or do I miss something? Any ideas? Thank you

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1 Answer

  1. Editorial Team
    select id from TableA where ID < 12 and id in (Select id from TableB)
union 
select id from TableB where ID < 12   and id in (Select id from TableA)

    or

    SELECT id, 
       time, 
       size 
FROM   (SELECT * 
        FROM   tablea 
        WHERE  id < 12 
        UNION ALL
        SELECT * 
        FROM   tableb 
        WHERE  id < 12) a 
GROUP  BY id, 
          time, 
          size 
HAVING Count(*) = 2

    or

    SELECT * 
FROM   tablea A 
WHERE  EXISTS (SELECT 1 
               FROM   tableb b 
               WHERE  b.id = a.id 
                      AND b.time = a.time 
                      AND b.size = a.size)
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