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  • Running Totals in an SQL Query

    March 2, 2011 Skip Marchesani

    There are situations when running an SQL query for data analysis where I like to generate a running total based on a column in the table that is the target of the query, to assist with the data analysis.

    “What’s a running total?” you ask. Wikipedia and I define it as the summation of a sequence of numbers that is updated each time a new number is added to the sequence, simply by adding the value of the new number to the running total.

    To explain how to generate a running total, I use an example based on a department

    …

    Read more
  • Odds and Ends: The Reader is the Guru

    March 2, 2011 Dear Professional

    The emails I get from you provide a sterling illustration that the readers of this august publication are the true gurus in the world of IBM i. Here are a few contributions that I hope may prove useful to some of you.

    -Ted


    Hey, Ted:

    I’d like to add an important point when renaming the local database. IBM’s own jobs rely on this local database name entry existing. They don’t care if you have deleted it. They will recreate it pretty quickly if it does not have a name entered, so the commands to delete the old and add

    …

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  • Admin Alert: Corralling i/OS Storage Hogs, Part 1

    March 2, 2011 Joe Hertvik

    Last year, I wrote an article on finding and expelling i/OS storage hogs. Since then, I’ve pinpointed some other items that illustrate how Power i system storage fills up unnecessarily, leaving you contemplating buying additional disk drives when all you really need is a good housecleaning. This week and next, I’ll expand on my storage hog list to help you keep your storage problems under control.

    The Big Seven Storage Hogs

    When looking for ways to reclaim disk storage, I usually focus my attention on the big seven culprits of unnecessary storage consumption.

    1. Excessive spooled files and other system
    …

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