Single SQL to get results from two tables with one common column but different conditions

Question

0.00/5 (No votes)

See more:

Novice attempts to join or union failed. Need SQL to achieve results from two tables with common column. I want to have rows that contain unique vendor codes, with column 2 a count vendor codes from table zqm for date in June, with column 3 a count of vendor codes(VC) from table rr for each unique vendor code where owner is supplier and date in June.

Example sql desired result from below two tables:

VC     count VC       count RR
101	4             1
103     2             0

table zqm
VC     	date
101     June
101	June
101	June
101	June
103	June
103	June
103     July
Table rr
VC      owner      	date
101    supplier	        June
101    company	        June
103    company	        June
103    supplier         July

Posted 30-May-14 3:30am

Member 10854681

Updated 30-May-14 3:34am

PIEBALDconsult

v2

Add a Solution

3 solutions

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Jörgen Andersson · Answer 1 · 2014-05-30T09:16:00

Here's another way of doing it:

SQL

with c as (
    select  vc,count(date) Count_VC
    from    zqm
    where   date = 'June'
    group by vc
    )
select  c.vc,c.Count_VC,sum(case rr.date when 'June' then 1 else 0 end) Count_RR
from    c
Left outer join rr on c.vc = rr.vc
where   rr.owner = 'supplier'
group by c.vc,c.Count_VC

Peter Leow · Answer 2 · 2014-05-30T05:09:00

SQL

select z.vc,
(select count(zqm.date)
from zqm where zqm.date = 'June' and zqm.vc=z.vc group by zqm.vc) as count_vc,
(CASE
  WHEN not exists (select * from rr where rr.date = 'June' and owner='supplier' and rr.vc=z.vc)
  THEN 0
  ELSE (select count(rr.date)
from rr where rr.date = 'June' and owner='supplier' and rr.vc=z.vc group by rr.vc)
  END)  as count_rr
from zqm z group by z.vc

RDBurmon · Answer 3 · 2014-05-30T04:18:00

Solution 1

Try this

SQL

SElect distinct * from maintbl INNER JOIN
(select *  from zqm where  date='June') AS zqm ON maintbl.VC=zqm.VC
INNER JOIN
(select * from rr WHERE owner ='supplier' and date='June') as rr ON rr.VC=zqm.VC

Posted 30-May-14 4:18am

RDBurmon

Single SQL to get results from two tables with one common column but different conditions

3 solutions

Solution 3

Solution 2

Solution 1

Add your solution here

Preview 0