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Best Way To Do This
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Forum:
Microsoft SQL Server
Catégorie:
Autre
Divers
Thread ID:
01520112
Message ID:
01520114
Vues:
53
>I have a table of voter info called Farmers with 92K rows in it. I also have a table of voters called tblCamp_CT with 9 million rows. I added a column to tblCamp_CT called 'IsFarmer' TINYINT.
>
>I now need to go through the Farmers table and for every row find the person in the tblCamp_CT using First Name, Last Name, Middle Name, and maybe some other info. If that person exists in the tblCamp_CT table, then set IsFarmer to 1.
>
>Wat's the best way to do something like this?
WHILE (2 > 1)
  BEGIN
    BEGIN TRANSACTION
    UPDATE TOP ( 10000 ) tblCamp_CT SET isFarmer = 1
    FROM tblCamp
    INNER JOIN Farmers ON ....
    WHERE  tblCamp.isFarmer = 0
    
    IF @@ROWCOUNT = 0
      BEGIN
        COMMIT TRANSACTION
        BREAK
      END
    COMMIT TRANSACTION
  END -- WHILE
Against Stupidity the Gods themselves Contend in Vain - Johann Christoph Friedrich von Schiller
The only thing normal about database guys is their tables.
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