Reputation: 5
I've been trying to wrap my brain around this using joins, subquery joins, not exists clauses and I keep failing to come up with a query that produces the correct results.
I have 2 table's Trans and TransEntry
Trans Table (PRIMARY TransID)
TransID | Date
-----------
1 1/1/18
2 1/2/18
3 1/3/18
TransEntry Table (PRIMARY TransEntryID)
TransEntryID | TransID |Item
-----------
1 1 A
2 1 B
3 1 C
4 2 A
5 2 D
6 2 F
7 3 A
8 3 B
9 3 G
10 3 C
I need to have all TransID from TransEntry where the have item A and item C in the Entry, in our sample it will be only TransID (1,3)
Upvotes: 0
Views: 66
Reputation: 50119
I think something like this should work:
SELECT TransID
FROM TransEntry
WHERE Item in ('A','C')
GROUP BY TransID
HAVING Count(DISTINCT Item) = 2;
Here's a sqlfiddle showing this
CREATE TABLE TransEntry(
TransEntryID INTEGER NOT NULL PRIMARY KEY
,TransID INTEGER NOT NULL
,Item VARCHAR(1) NOT NULL
);
INSERT INTO TransEntry(TransEntryID,TransID,Item) VALUES
(1,1,'A')
,(2,1,'B')
,(3,1,'C')
,(4,2,'A')
,(5,2,'D')
,(6,2,'F')
,(7,3,'A')
,(8,3,'B')
,(9,3,'G')
,(10,3,'C');
SELECT TransID
FROM TransEntry
WHERE Item in ('A','C')
GROUP BY TransID
HAVING Count(DISTINCT Item) = 2
+---------+
| TransID |
+---------+
| 1 |
| 3 |
+---------+
Upvotes: 0
Reputation: 29
SELECT TransEntry.TransID, TransEntry.Item, GROUP_CONCAT(TransEntry.Item) AS items
FROM TransEntry
group by TransEntry.TransID Having Find_In_Set('A',items)>0 and Find_In_Set('C',items)>0
see the jsfiddle
Upvotes: 0
Reputation: 50163
You can use GROUP BY
:
SELECT TransID
FROM TransEntry
GROUP BY TransID
HAVING SUM(CASE WHEN item = 'A' THEN 1 ELSE 0 END) > 0 AND
SUM(CASE WHEN item = 'C' THEN 1 ELSE 0 END) > 0;
Upvotes: 0
Reputation: 1862
you can go for something like this:
select transId
from
(
select
TransID ,
case when item = 'A' then 1 else 0 end as HasA,
case when item = 'C' then 1 else 0 end as HasC
from TransEntry
) a
group by transId
having sum(hasA) > 0 and sum(hasC) > 0
Upvotes: 0
Reputation: 1402
My answer wasn't as succinct as Aaron's, but in case it's helpful:
SELECT
TransID
FROM
Trans
WHERE
TransID IN ( SELECT TransID FROM TransEntry WHERE Item = 'A' ) AND
TransID IN ( SELECT TransID FROM TransEntry WHERE Item = 'C' )
Upvotes: 0
Reputation: 131
or
SELECT TransID FROM TransEntry WHERE Item = 'A'
INTERSECT
SELECT TransID FROM TransEntry WHERE Item = 'C'
Upvotes: 1