Re: PostgreSql Doubt

John R Pierce <pierce@xxxxxxxxxxxx> · Sat, 21 May 2016 17:07:29 -0700



    On 5/21/2016 2:22 PM, aluka raju wrote:

    
      I have a data source for example in file format(xml,csv ..etc) , i
      want to use postgresql engine to query select,update,insert using
      foreign data wrappers(fdw).
    

    updating/inserting into a CSV, XML, or whatever flat file will be
      very painful, it will require copying the whole file with the
      new/changed record in place.
    

    I would recommend instead importing your XML/CSV/etc data into
      SQL table(s), do your data operations there, then export the
      results back as XML or whatever if you really need it that way.
    

    -- 
john r pierce, recycling bits in santa cruz