![]() That’s when you have no choice but to drag out the RPG or COBOL compiler. A Query/400 query may work fine, until a user requests that a certain calculation be done for control breaks, or that a field be printed only under certain circumstances. Nonetheless, most query packages run out of steam. Many overcome the limitations of IBM’s query offerings. There are many third-party query packages. For example, Query/400 has to be told to read the library list, it has no conditional processing, it has limited calculation abilities, and passing parameters to a Query/400 query is hardly intuitive. IBM offers Query/400, Query Management, and SQL/400, but they’re all limited in one way or another. There is no shortage of ways to build a report from an iSeries database.
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