SQL how to cross reference two unrelated tables - sql

Question

I need to cross reference from these 2 tables and display only the matching contindex from the first table if the contindex from the other table matches. Below is an image of what i have. Also the code is pasted below.
select t.ContIndex, t.clientcode, t.debttranname as ClientName, DebtDetService,
case when DebtTranType = 3 then 'Invoice' else 'Credit Memo' end as Type, d.amount,
REPLACE(REPLACE(REPLACE(CAST(FeeNarrative As varchar(max)),
CHAR(10) + CHAR(13), ' '), CHAR(10), ' '), CHAR(13), ' ') as Narrative
from tblTranDebtorDetail d
inner join tbltrandebtor t on t.DebtTranIndex=d.DebtTranIndex
where DebtTranDate > 'jan 1 2015' and t.debttrantype in (3,6)
and DebtDetService = 'abr reimb'
select w.contindex /*, ClientCode, ClientName, Job_Name,
case when TransTypeIndex=1 then 'Time' else 'Exp' end as Type, sum(wipamount)*/
from tblTranWIP w
inner join tblJob_Header h on h.job_idx=w.ServPeriod and h.ContIndex=w.ContIndex
inner join tblengagement e on e.ContIndex=w.ContIndex
inner join tblstaff s on s.StaffIndex=w.StaffIndex
where wipoutstanding <>0 and h.Job_Template in (99,100) and TransTypeIndex in (1,2)
--group by w.contindex, ClientCode, ClientName, Job_Name, TransTypeIndex
Basically I need to show only the top table rows that match the bottom table contindex.

Answer 1

Sounds like the tables are related by contindex, no? Anyhow, copy and pasting your code and adding just a little bit extra should do the trick:
select t.ContIndex, t.clientcode, t.debttranname as ClientName, DebtDetService,
case when DebtTranType = 3 then 'Invoice' else 'Credit Memo' end as Type, d.amount,
REPLACE(REPLACE(REPLACE(CAST(FeeNarrative As varchar(max)),
CHAR(10) + CHAR(13), ' '), CHAR(10), ' '), CHAR(13), ' ') as Narrative
from tblTranDebtorDetail d
inner join tbltrandebtor t on t.DebtTranIndex=d.DebtTranIndex
where DebtTranDate > 'jan 1 2015' and t.debttrantype in (3,6)
and DebtDetService = 'abr reimb'
and t.ContIndex IN
(
select w.contindex /*, ClientCode, ClientName, Job_Name,
case when TransTypeIndex=1 then 'Time' else 'Exp' end as Type, sum(wipamount)*/
from tblTranWIP w
inner join tblJob_Header h on h.job_idx=w.ServPeriod and h.ContIndex=w.ContIndex
inner join tblengagement e on e.ContIndex=w.ContIndex
inner join tblstaff s on s.StaffIndex=w.StaffIndex
where wipoutstanding <>0 and h.Job_Template in (99,100) and TransTypeIndex in (1,2)
--group by w.contindex, ClientCode, ClientName, Job_Name, TransTypeIndex
)
The additional code is the WHERE t.contindex IN (<yoursecondquery>) You could accomplish the same thing with an INNER JOIN too, but this is a quick-fix given that you already wrote out both queries seperately.

Answer 2

You can use an IN or EXISTS here.. You just need to alter the second query slightly to add a WHERE condition if you use EXISTS.
SELECT
t.ContIndex,
t.clientcode,
t.debttranname AS ClientName,
DebtDetService,
CASE WHEN DebtTranType = 3 THEN 'Invoice'
ELSE 'Credit Memo'
END AS Type,
d.amount,
REPLACE(REPLACE(REPLACE(CAST(FeeNarrative AS VARCHAR(MAX)),CHAR(10) + CHAR(13),' '),CHAR(10),' '),CHAR(13),' ') AS Narrative
FROM
tblTranDebtorDetail d
INNER JOIN tbltrandebtor t ON t.DebtTranIndex = d.DebtTranIndex
WHERE
DebtTranDate > 'jan 1 2015'
AND t.debttrantype IN (3,6)
AND DebtDetService = 'abr reimb'
AND EXISTS ( SELECT
w.contindex
FROM
tblTranWIP w
INNER JOIN tblJob_Header h ON h.job_idx = w.ServPeriod
AND h.ContIndex = w.ContIndex
INNER JOIN tblengagement e ON e.ContIndex = w.ContIndex
INNER JOIN tblstaff s ON s.StaffIndex = w.StaffIndex
WHERE
t.ContIndex = w.contindex -- new where clause
AND wipoutstanding <> 0
AND h.Job_Template IN (99,100)
AND TransTypeIndex IN (1,2) )