From AS/400 to iSeries to System i to IBM i on Power
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RPG EXAMPLE to read NUMERIC from ALPHAMERIC AKA: how to select only the number from an address in a field, or file data A little while ago, I wanted to extract out the numerics from a string of data: For example (a) if I feed in a phone number like “(540)-123 – 1234” but I just …
SQL Tables with Indexes and Views are faster than DDS Phsyicals and Logicals. #HONEST SQL is a wonderful beast for quickly getting data from huge tables (aka Files). The trouble with SQL is that it’s so very simple to use; programmers get lazy and sometimes forget to do the analysis to make it as simple …
For the longest time I’ve heard about the performance difference between a true SQL INDEX and a DDS ACCESS PATH generated index on the IBM i operating system (or ‘OS400’ which was a ten year old, but very commonly used version of the the same OS). But is it true? I know that SQL creates …