How To Pull In Columns From A Derived Table Or Sub Query - sql

Question

I have a query that looks for records that don't have a matching account number and tries to match those accounts by address.
I am getting the results I want, but I want to include columns from the table2 below. How can I do this?
Select DISTINCT
account_num
,product
,accountName
,address_1
,address_2
,city
,state
,zip
,short_address
INTO #Matching_Address
From #Non_Matching_Accounts t
Where EXISTS
(SELECT * FROM (SELECT
left(ADDRESS_LINE1_TXT,20) AS matching_add
,CITY
,STATE
,ZIP
,ACCOUNT_OWNER
From [database].[dbo].[table2]) v (matching_add, CITY, STATE,ZIP,ACCOUNT_OWNER)
WHERE
t.short_address= v.matching_add
AND t.city= v.NAME
AND t.state = v.STATE
AND t.zip = v.ZIP
AND t.accountName LIKE '%'+v.ACCOUNT_OWNER+'%')
I've tried:
Select DISTINCT
account_num
,product
,accountName
,address_1
,address_2
,city
,state
,zip
,short_address
,matching_add
,CITY
,STATE
,ZIP
,ACCOUNT_OWNER
INTO #Matching_Address
From #Non_Matching_Accounts t
Where EXISTS
(SELECT * FROM (SELECT
left(ADDRESS_LINE1_TXT,20) AS Select DISTINCT
account_num
,product
,accountName
,address_1
,address_2
,city
,state
,zip
,short_address
INTO #Matching_Address
From #Non_Matching_Accounts t
Where EXISTS
(SELECT * FROM (SELECT
left(ADDRESS_LINE1_TXT,20) AS matching_add
,CITY
,STATE
,ZIP
,ACCOUNT_OWNER
From [database].[dbo].[table2]) v (matching_add, CITY, STATE,ZIP,ACCOUNT_OWNER)
WHERE
t.short_address= v.matching_add
AND t.city= v.NAME
AND t.state = v.STATE
AND t.zip = v.ZIP
AND t.accountName LIKE '%'+v.ACCOUNT_OWNER+'%')
From [database].[dbo].[table2]) v (matching_add, CITY, STATE,ZIP,ACCOUNT_OWNER)
WHERE
t.short_address= v.matching_add
AND t.city= v.NAME
AND t.state = v.STATE
AND t.zip = v.ZIP
AND t.accountName LIKE '%'+v.ACCOUNT_OWNER+'%')
Expected Results:
acct_num|prd|actName|add1|add2|city|state|zip|act_num2|prd2|actName|add1|add2|city2|state2|zip2|
----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+----+
a | a | a | a | a | a | a | a | a | a | a | a | a | a a| a
b | b | b | b | b | b | b | b | b | b | b | b | b | b | b
c | c | c | c | c | c | c | c | c | c | c | c | c | c | c |
d | d | d | d | d | d | d | d | d | d | d | d | d | d | d |

Answer 1

You're using 'exists' when an 'inner join' is advised. Restructure as follows:
select
distinct t.account_num,
t.product,
t.accountName,
t.address_1,
t.address_2,
t.city,
t.state,
t.zip,
t.short_address,
matching_add = left(v.address_line1_txt,20),
vCity = v.city,
vState = v.state,
vZip = v.zip,
v.account_owner
into #Matching_Address
from #Non_Matching_Accounts t
join [database].[dbo].[table2] v
on t.short_address = v.matching_add
and t.city = v.name
and t.state = v.state
and t.zip = v.zip
and t.accountName like '%' + v.account_owner + '%'
An inner join (or just 'join' for short), will only return matches, so it works like 'exists' in that sense. But it makes the columns from the right-hand table available to you.
My hunch is that you may have tried this. I see a 'distinct' in your query, which probably would not have been necessary with just 'exists'. Did you abandon 'inner join' because it was duplicating your rows? If so, 'exists' is still not the answer. Maybe a cross apply can help you:
select ... (same as above)
into #Matching_Address
from #Non_Matching_Accounts t
cross apply (
select
top 1 *
from [database].[dbo].[table2] v
where t.short_address = v.matching_add
and t.city = v.name
and t.state = v.state
and t.zip = v.zip
and t.accountName like '%' + v.account_owner + '%'
order by v.matching_add -- or whatever puts the better one on top
) v
With 'top 1', The 'v' result will produce no more than 1 record per row in 't'. With 'cross apply', if the result of 'v' is no records, then 't' will not return a row, (similar to 'exists' or 'inner join').