Multiple SQL Update Statements in single query

Question

I am in a situation where I am having to update about 12,000 items in my DB. Each row needs to mirror an excel file that I made previously. I have made the file that creates each line of SQL statement, but I am not sure if I can run each line in a single query.

This is an example of what I am trying to do.

UPDATE [STORESQL].[dbo].[RPT_ITM_D] SET F1301='1.29' WHERE F01='0000000000001'
UPDATE [STORESQL].[dbo].[RPT_ITM_D] SET F1301='1.39' WHERE F01='0000000000002'

Will this work, or are there any better options for what I am trying to achieve?

Each item will have a unique value and the column to be changed will have a unique value as well. I don't see how I could make this work with a loop, or any other methods I've found so far. I realize that this might take a long time to process, but time is not an issue.

Thank you in advance

Answer 1

Something like this is the best you can do:-

UPDATE [STORESQL].[dbo].[RPT_ITM_D] 
SET   F1301 = 
      case  F01 
      when '0000000000001' then '1.29'
      when '0000000000002' then '1.30'
      ELSE F1301

end

Other than that, running multiple updates is the way to go.

Answer 2

Yes, you could add all the single-line-Update-statements in one query like you are doing.