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Dear Ron,
Thank you for submitting this Db2 for z/OS Idea. After giving the request a comprehensive review, we have determined that we cannot include it as a candidate in an upcoming deliverable because it is not consistent with our product strategy for future deliverables. Consequently, we will have placed it Not under consideration at this time.
We appreciate your input to the Db2 for z/OS development team. We also hope that you will continue to submit enhancement suggestions for improvements as customer feedback is a key component to shaping the future direction of Db2 for z/OS.
Sincerely,
Db2 for z/OS Team
From the Word document of all the cases, the two we are most interested in are 6c and 9d. Those have an X in the attached document.
We only have one set of Application-period temporal tables (ATT) so those are not a great concern. We have quite a few System-period tables (STT). We would like to do more archive-enabled (AET) but this restriction has kept us from doing many.
Therefore, the most basic case in both static and dynamic applications is to allow the joining of the "base" STT and AET tables. We don't use FOR SYSTEM_TIME AS OF construct on the STT queries very often, so that in combination with an AET should be rare.
Being able to set GET_ARCHIVE in a join with a base STT table would probably be the next most desired option. I guess that would be options 6a and 9b.
Both of the questions in the Word doc about something being acceptable (points 7 and 8) are fine.
Janet,
Let me start with answering questions b, c, and d.
b. I am just running a dynamic sql query in a query tool.
c. The package used for the dynamic statement is SYSSN200. It is bound with all those options set to 'Y'
d. I didn't set any of these special register options or the global variable. I simply ran a query that joined a system temporal table with archive-enabled table.
Our engineer has provided a word doc, attached, and also has the following questions for you regarding this idea.
a. the customers want that temporal tables (STT, ATT, BTT) and archive-enabled table (AET) can be contained in the same SQL statement (or we call "query"), they dislike the restriction with SQL error code
b. for above query that expected to be successful, it is dynamic query or static query in their applications?
c. when they run above query, what are the values of the bind options SYSTIMESENSITIVE, ARCHIVESENSITIVE, BUSTIMESENSITIVE?
d. when they run above query, what are the values of special registers CURRENT TEMPORAL SYSTEM_TIME, CURRENT TEMPORAL BUSINESS_TIME, and global variable GET_ARCHIVE?