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SQL Loop help (temp tables etc)

I have a main table and a small lookup table.

Im trying to get the ids from my streets table to my benchmarks table.

So in streets I have 2 columns.

Id
Streetname

In Benchmarks I have a streetid field that I want to contain the value of the Id column in streets table.  I need to use Streets.Streetname and Benchmarks.Street1 as the where.

So in psuedo code:  
update dbo.benchmarks set dbo.benchmkarks.street1id = dbo.streets.id where dbo.benchmarks.street1id = dbo.streets.streetname.

Obviously this will take a loop to read in all the rows in streets and then do the processing unfortunately ive never grasped fully how to get this right in sql.

Thanks in advance and please view the attachment that shows my columns.

my db schema
0
rochestermn
Asked:
rochestermn
1 Solution
 
Aneesh RetnakaranDatabase AdministratorCommented:
update dbo.benchmarks
set dbo.benchmkarks.street1id = dbo.streets.id
FROM dbo.streets
where dbo.benchmarks.street1id = dbo.streets.streetname.
0
 
appariCommented:
try this

update A
set street1id = B.id
FROM dbo.benchmarks  A join  dbo.streets B
on A.street1 = B.streetname
0
 
rochestermnAuthor Commented:
Worked perfectly!  Guess I didnt need a temp table after all.
0
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