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Enhance EXPLAIN in order to no longer need Informix server access

Currently Informix EXPLAIN generates a server side file. For developers that are working from remote machines, it becomes problematic to retrieve the explain files when they have restricted access to the Informix Server machine.

There are 2 undocumented functions that can be used but they have limited functionality : ifx_explain and bson_explain .

These functions return the optimizer plan, but cannot return a statistics section ( the sql statement is never actually executed, so there is no statistics section ).

 

Informix should be enhanced to allow a remote client to retrieve the output of the EXPLAIN plan and the statistics section.

 

Such  capability would greatly benefits developers that have restricted access do the Informix server machine, has it happens in many corporate environments.

 

  • Luis Marques
  • Aug 30 2019
  • Needs review
Why is it useful?
Who would benefit from this IDEA? Developers, DBAs
How should it work?

In an agnostic way ( should work for dbaccess, jdbc, odbc, etc ), the explain output ( including statistics section ) should be made available to a remote client.

One possible way would be to enhance and document the already existing ifx_explain and bson_explain functions.

 

Idea Priority Low
Priority Justification
Customer Name
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  • SangGyu Jeong commented
    10 Sep 03:36

    I agree. This feature is essential for Informix users.

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