After a lot of research, what this issue really came down to was the inability of SQL to convert a binary value into numerics such as a decimal or integer value. I've seen tricks on using the substring of a hex() value of a substring of the bit data, then dividing by the decimal locations 10^x and then applying the sign, but that doesn't help with integers, which are even more difficult. Its frustrating, because the data is right there in the entry_data column, and its so easy to overlay data onto different formats in RPG. I have a solution in RPG that I'm going to finish implementing and that will do, until a better solution comes along. It looks to be faster than our current solution which uses CPYF to convert the entry data, so, I've made some progress.
-----Original Message-----
From: MIDRANGE-L <midrange-l-bounces@xxxxxxxxxxxxxxxxxx> On Behalf Of Darren Strong
Sent: Wednesday, May 1, 2019 1:34 PM
To: midrange-l General Questions (midrange-l@xxxxxxxxxxxxxxxxxx) <midrange-l@xxxxxxxxxxxxxxxxxx>
Subject: DISPLAY_JOURNAL and ENTRY_DATA parsing using pure SQL
I developed a hybrid RPG and SQL program to query the DISPLAY_JOURNAL SQL UDTF from IBM, which if you use it, you know that the ENTRY_DATA column comes in as an incomprehensible BLOB. I've used RPG to overlay this BLOB onto a data structure and written this out to a file with the journalled file structure pre-built to be able to view this data. What I'm wondering is, if there is an SQL way to dump this data onto a file and/or structure so that I might be able to build this process as a view, rather than an outfile to further reduce unnecessary file I/O. If it were a view, then I imagine that the program would just create the view, in say QTEMP, and then I could query the fields as desired before the data was actually written anywhere.
The column I'm trying to parse is currently coded as follows:
cast(entry_data as char(5000) for bit data)
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