In the example table below, I'm trying to figure out a way to sum amount over id for all marks where mark 'C' doesn't exist within an id. When mark 'C' does exist in an id, I want the sum of amounts over that id, excluding the amount against mark 'A'. As illustration, my desired output is at the bottom. I've considered using partitions and the EXISTS command, but I'm having trouble conceptualizing the solution. If any of you could take a look and point me in the right direction, it would be greatly appreciated :)
sample table:
id mark amount
------------------
1 A 1
2 A 3
2 B 2
3 A 2
4 A 1
4 B 3
5 A 1
5 C 3
6 A 2
6 C 2
desired output:
id sum(amount)
-----------------
1 1
2 5
3 2
4 4
5 3
6 2
select
id,
case
when count(case mark when 'C' then 1 else null end) = 0
then
sum(amount)
else
sum(case when mark <> 'A' then amount else 0 end)
end
from sampletable
group by id
Here is my effort:
select id, sum(amount) from table t where not t.id = 'A' group by id
having id in (select id from table t where mark = 'C')
union
select id, sum(amount) from table t where t.id group by id
having id not in (select id from table t where mark = 'C')
SELECT
id,
sum(amount) AS sum_amount
FROM atable t
WHERE mark <> 'A'
OR NOT EXISTS (
SELECT *
FROM atable
WHERE id = t.id
AND mark = 'C'
)
GROUP BY
id
;
Related
Lets say that we have a Groupings table that has 2 columns: Group_ID and Item_ID. Both are ints. For a simplified example lets imagine that the Item_ID can be one of only 3 values: {1,2,3}. The Group_IDs then represent the different groups of permutations of this data. So for example:
Group_ID Item_ID
1 1
2 2
3 3
4 1
4 2
5 1
5 3
6 2
6 3
7 1
7 2
7 3
What SQL could I write that if I inputted a collection of Item_Ids it would return the Group_ID related to that collection?
So for example in the above with an input of (2,3) => 6
Edit: I want to use the solution query on a more complex table, where there are 16 different values for the Item_ID
use conditional aggregation
select group_id
from table t1
where Item_ID in(2,3)
and exists( select 1 from table t2 where t1.group_id=t2.group_id
having count(distinct t2.Item_ID)=2 )
group by group_id
having count(distinct item_id)=2
Another Sql to do this
SELECT Group_id
FROM YourTable
GROUP BY Group_id
HAVING COUNT(Item_ID) = 2
AND COUNT(CASE WHEN Item_ID = 2 THEN Item_ID END) > 0
AND COUNT(CASE WHEN Item_ID = 3 THEN Item_ID END) > 0
Assuming you have no duplicates, I would simply do:
select group_id
from t
group by group_id
having sum(case when Item_ID in (2, 3) then 1 else 0 end) = count(*) and
count(*) = 2;
This seems like the simplest approach.
I have a table with Ids and a subId column. And I have a user defined data type with a list of SubIds. I want all those ids which have all the sub-ids present in my user-defined data type. for example:
The table is:
ID SubID
1 2
1 3
1 4
2 3
2 4
2 2
3 3
3 2
and the data type is
CREATE TYPE SubIds AS TABLE
( SubId INT );
GO
With Value
SubID
3
4
I want the output to be
ID
1
2
Because only the ID 1 and 2 contain both the subIds 3 & 4
Note: the combination of Id and Sub ID will always be unique if its of any use
Let's assume that #s is your table of ids:
select t.ID
from t
Where t.SubId in (select SubId from #s)
group by t.Id
having count(*) = (select count(*) from #s);
This assumes that the two tables do not have duplicates. If duplicates are present, you can use:
select t.ID
from t
Where t.SubId in (select SubId from #s)
group by t.Id
having count(distinct t.SubId) = (select count(distinct s.SubId) from #s s);
Try this way
select ID
from yourtable
Where SubID in (3,4)
Group by ID
having Count(distinct SubID)=2
Another more flexible approach
select ID
from yourtable
Group by ID
having sum(case when SubID = 3 then 1 else 0 end) >= 1
and sum(case when SubID = 4 then 1 else 0 end) >= 1
If you want to pull SubId's from SubIds table type then,
SELECT ID
FROM yourtable T
JOIN (SELECT SubID,
Count(1) OVER() AS cnt
FROM SubIds) S
ON T.SubID = S.SubID
GROUP BY ID,Cnt
HAVING Count(DISTINCT T.SubID) = s.cnt
In PostgreSQL, how can I merge multiple columns into one column with multiple rows?
The columns are all boolean, so I want to:
Filter for true values only
Replace the true value (1) with the name of the column (A, B or C)
I have this table:
ID | A | B | C
1 0 1 0
2 1 1 0
3 0 0 1
4 1 0 1
5 1 0 0
6 0 1 1
I want to get this table:
ID | Letter
1 B
2 A
2 B
3 C
4 A
4 C
5 A
6 B
6 C
I think you need something like this:
SELECT ID, 'A' as Letter FROM table WHERE A=1
UNION ALL
SELECT ID, 'B' as Letter FROM table WHERE B=1
UNION ALL
SELECT ID, 'C'as Letter FROM table WHERE C=1
ORDER BY ID, Letter
SELECT ID,
(CASE
WHEN TABLE.A = 1 then 'A'
WHEN TABLE.B = 1 then 'B'
WHEN TABLE.C = 1 then 'C'
ELSE NULL END) AS LETTER
from TABLE
You may try this.
insert into t2 select id, 'A' from t1 where A=1;
insert into t2 select id, 'B' from t2 where B=1;
insert into t2 select id, 'C' from t3 where C=1;
If you care about the order, then you can do this.
insert into t3 select id, letter from t2 order by id, letter;
W/o UNION
You can use a single query to get the desired output.Real time example
select id
,regexp_split_to_table((
concat_ws(',', case
when a = 0
then null
else 'a'
end, case
when b = 0
then null
else 'b'
end, case
when c = 0
then null
else 'c'
end)
), ',') l
from c1;
regexp_split_to_table() & concat_ws()
Have the following Data in the table
Example Table
ID Value
1 a
1 b
1 c
2 a
2 b
2 c
3 a
3 b
I need to retrieve records having ID with only two values a and b.
So i am expecting only the Record with ID 3 .
Can anyone help me with the query
I guess you could do something like
select
ID,
sum(case when value = 'a' then 1
when value = 'b' then 1
else 3 end)
from
table1
group by id
having
sum (case when value = 'a' then 1
when value = 'b' then 1
else 3 end) =2
SQL Fiddle
That will work:
select x.id from
(
select id from mytable where value = 'a'
union all
select id from mytable where value = 'b'
) x
group by x.id
having COUNT(*) = 2
and not exists (select * from mytable t where t.id = x.id and value <> 'a' and value <> 'b')
I have two result sets that look approximately like this:
Id Name Count
1 Asd 1
2 Sdf 4
3 Dfg 567
4 Fgh 23
But the Count column data is different for the second one and I would like both to be displayed, about like this:
Id Name Count from set 1 Count from set two
1 Asd 1 15
2 Sdf 4 840
3 Dfg 567 81
4 Fgh 23 9
How can I do this in SQL (with union if possible)?
My current SQL, hope this will better explain what I want to do:
(SELECT Id, Name, COUNT(*) FROM Customers where X)
union
(SELECT Id, Name, COUNT(*) FROM Customers where Y)
select *
from
(
SELECT 'S1' as dataset, Id, Name, COUNT(*) as resultcount FROM Customers where X
union
SELECT 'S2',Id, Name, COUNT(*) FROM Customers where Y
) s
pivot
(sum(resultcount) for dataset in (s1,s2)) p
You can do something like:
;WITH Unioned
AS
(
SELECT 'Set1' FromWhat, Id, Name FROM Table1
UNION ALL
SELECT 'Set2', Id, Name FROM Table2
)
SELECT
Id,
Name,
SUM(CASE FromWhat WHEN 'Set1' THEN 1 ELSE 0 END) 'Count from set 1',
SUM(CASE FromWhat WHEN 'Set2' THEN 1 ELSE 0 END) 'Count from set 2'
FROM Unioned
GROUP BY Id, Name;
SQL Fiddle Demo