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  3. October 2001

Re: SQL command?

At 16:05 10/05/2001, Kirk Yates wrote:
>I have several files that I need to change information in one field from
>one value to another.  I have a file that has the old value and the new
>value.  Is it possible to read the one file with CL, then pass the 2
>variables to a SQL command that will update  a field in another file
>when the field in the other file matches to old value that was read from
>the file with a CL program?


That's been possible to do directly with SQL for a couple of years now:

  UPDATE TABLE1 SET
    COL1 = (SELECT NEW2 FROM TABLE2
              WHERE NEW1 = COL1)
  WHERE EXISTS (SELECT * FROM TABLE2
              WHERE NEW1 = COL1)


Pete Hall
pbhall@execpc.com
http://www.execpc.com/~pbhall/

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