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Editorial Team
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Asked: 2026-06-12T19:52:28+00:00

I’m trying to update or insert data dependent on whether the account number is

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I’m trying to update or insert data dependent on whether the account number is already in the existing data.
Firstly I added the new variables to those with an acocunt number already in the table using this

drop table #test1
select a.*, B.Delq_Sep12, b.Bal_Sep12, b.Queue_Sep12
into #test1
from  pcd1 a
left join #pcd_sep12  b on  (a.ACCOUNT_NUMBER = B.account_number)

Then I add all those records whose account number is not in test1 (created above) from #pcd_sep12 into test1

INSERT #test1
SELECT * FROM #pcd_sep12 WHERE account_number NOT IN(SELECT account_number FROM #test1)

I get the error Column name or number of supplied values does not match table definition.

I realise its because theres not the same number of fields but is there a way around this?

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1 Answer

  1. Editorial Team

    Why not use the MERGE (aka “upsert”) statement?

    MERGE INTO pcd1 M
USING (SELECT * FROM #pcd_sep12) src ON M.account_number = src.account_number
WHEN MATCHED
-- UPDATE stuff
WHEN NOT MATCHED BY TARGET
-- INSERT stuff;

    This way you don’t need a temp table or any tests: these won’t be concurrency-safe under load

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