maria-developers team mailing list archive

[Peter Laursen <peter_laursen@xxxxxxxxxx>]

+ http://bugs.mysql.com/bug.php?id=67023 -- Peter

On Sun, Sep 30, 2012 at 1:39 PM, Peter Laursen <peter_laursen@xxxxxxxxxx>wrote:

> BTW: I reported this bug to MySQL:
> http://bugs.mysql.com/bug.php?id=67022
>
> -- Peter
>
> On Fri, Sep 28, 2012 at 5:18 PM, Peter Laursen <peter_laursen@xxxxxxxxxx>wrote:
>
>> @wlad is completely right!
>>
>> Workbench introduced a Visual Explain based on JSON EXPLAIN as Blogged
>> here: http://www.arubin.org/blog/2012/09/26/mysql-visual-explain/
>>
>> The very reason why JSON EXPLAIN was introduced in MySQL 5.6 could be
>> that Oracle develops the server and tools (WB, Enterprirse Monitor
>> primarily) in parallel.  Some recently introduced features in the server
>> could be introduced for the primary reason that they should be 'exploited'
>> by MEM and/or WB.  JSON EXPLAIN is one. Another example is the
>> Performance_Schema table introduced in 5.6.6 (I don't remember the table
>> name)  that records an 'aggregated summary' of queries' performance.
>> Actually this table has about the same information as what MONyog 'Query
>> Analyzer' module displays in its most simple display mode (but MONyog can
>> be 'drilled down' to a more detailed view).
>>
>> So Oracle *thinks* the server and their most important tools *as a
>> whole*, I think. We/Webyog cannot ignore this, as we compete with Oracle
>> (SQLyog <-> WB, MONyog <-> MEM).  We have to consider to implement a more
>> intuitive and advisory way of displaying EXPLAIN results (for non-expert
>> users primarily of course). The JSON format is interesting for us in the
>> context.
>>
>> -- Peter
>>
>>
>>
>>
>>
>> On Fri, Sep 28, 2012 at 4:50 PM, Vladislav Vaintroub <
>> wlad@xxxxxxxxxxxxxxxx> wrote:
>>
>>>
>>>
>>> > -----Original Message-----
>>> > From: maria-discuss-
>>> > bounces+wlad=montyprogram.com@xxxxxxxxxxxxxxxxxxx [mailto:maria-
>>> > discuss-bounces+wlad=montyprogram.com@xxxxxxxxxxxxxxxxxxx] On Behalf
>>> > Of Michael Widenius
>>> > Sent: Freitag, 28. September 2012 16:04
>>> > To: Peter Laursen; igor@xxxxxxxxxxxx; timour@xxxxxxxxxxxx;
>>> > psergey@xxxxxxxxxxxx
>>> > Cc: Maria Discuss; Maria Developers
>>> > Subject: Re: [Maria-discuss] [Maria-developers] Json Explain
>>> >
>>> >
>>> > For the moment we don't have a plan for that.
>>> >
>>> > The main reason is that the MariadB optimizer people don't like the
>>> > implementation and we are not sure how useful the current output
>>> > really is.
>>> >
>>>
>>> I guess json  is not for normal people to read , it is for programs to
>>> analyze and ,for example, display in a visually pleasing fashion. I
>>> believe
>>> this is the reason why Peter asks, and (I guess) the reason why Workbench
>>> has visual explain feature now for 5.6+.
>>> http://www.arubin.org/blog/2012/09/26/mysql-visual-explain/
>>>
>>>
>>
>