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DEMO_CODE = 'DE1'


DEMO_CODE = 'DE1'

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RVO
RVO
SSChasing Mays
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Group: General Forum Members
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Hi everyone.
I have these two records in [prj_demo_data] table:

prj_code        demo_code    decmo_vchar_data
---------------------------------------------
1425 DE1 U
1425 RAP YES
1426 DE1 B



How do I select only those records where the same project has both:

demo_code = 'DE1' and demo_vchar_data = 'U'
and
demo_code = 'RAP' and demo_vchar_data = 'YES'
ChrisM@Work
ChrisM@Work
SSCoach
SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)SSCoach (16K reputation)

Group: General Forum Members
Points: 16616 Visits: 19557
SELECT [stuff]
FROM [thing]
WHERE
(demo_code = 'DE1' AND demo_vchar_data = 'U')
OR
(demo_code = 'RAP' AND demo_vchar_data = 'YES')



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Koen Verbeeck
Koen Verbeeck
One Orange Chip
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Group: General Forum Members
Points: 27807 Visits: 13268
SELECT *
FROM MyTable WHERE prj_code IN
(
SELECT prj_code
FROM MyTable
WHERE demo_code = 'DE1' and demo_vchar_data = 'U'
INTERSECT
SELECT prj_code
FROM MyTable
WHERE demo_code = 'RAP' and demo_vchar_data = 'YES'
)
AND demo_code IN ('DE1','RAP') AND demo_vchar_data IN ('U','YES');




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RVO
RVO
SSChasing Mays
SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)

Group: General Forum Members
Points: 634 Visits: 517
God Bless you , Koen Verbeeck !

First I thought what an easy task...and then I felt embarrassed when after 3 hours I was still not able
to select those pairs.

I need to read about this INTERSECT to understand how it works...

Thank you so much!
RVO
RVO
SSChasing Mays
SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)SSChasing Mays (634 reputation)

Group: General Forum Members
Points: 634 Visits: 517
Hello Koen,

I just noticed this returns the same results.
Do I really need this last line ?

SELECT *
FROM prj_demo_data
WHERE prj_code IN
(
SELECT prj_code
FROM prj_demo_data
WHERE demo_code = 'DE1' and demo_data_vchar = 'U'
INTERSECT
SELECT prj_code
FROM prj_demo_data
WHERE demo_code = 'RAP' and demo_data_vchar = 'YES'
)
--code works even without this line?...
--AND demo_code IN ('DE1','RAP') AND demo_data_vchar IN ('U','YES')


Koen Verbeeck
Koen Verbeeck
One Orange Chip
One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)One Orange Chip (27K reputation)

Group: General Forum Members
Points: 27807 Visits: 13268
For the test data you provided, the last line is not necessary. I added it as an extra check.
Say for example project 1425 has a third line with demo_code DE2, than this extra row is not returned.


How to post forum questions.
Need an answer? No, you need a question.
What’s the deal with Excel & SSIS?
My blog at SQLKover.

MCSE Business Intelligence - Microsoft Data Platform MVP
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