sql - Why won't DB2 use my MQT table? -

-

I have created a user named MQT (physical content table) in DB 29.7 (1 has not been set yet ). This main fact is a simple set of tables

  • MQ was built with search optimization enabled and created by user attributes

    Li>

  • Refresh defrade and Amp; Initial data (maybe I should not be?)
  • Setting Registry Variables, using DQ2 to use all types of MQTs for optimization
  • "Set to Texx Flip the cache: flush package package cache dynamic
  • Make sure that the default query optimization class is at least 2 levels.
  • Run the runstats. Was (this is at 5)
  • Set the default refresh age to 0 (though I think it does not matter to user-defined MQTs)

Then it was tried to determine whether the adapter MQT will use:

  • I have tried that the various simple questions are called MQT - either:
    • SELECT COUNT (*) FROM fact_table
    • or Select group-dimension, COUNT (*) FROM group-dimension by fact_table GROUP.
    • Explain (using db2expln) only the fact table is referenced and not MCT
    • The query results show that the fact table and not the MTT table
    • the question period fact The table was compatible with and not the MCT table.

    Anyone will either suggest a simple method whether a query is using an MCT or should I try it before using it?

    2 things:

    1) What's that? Tunnel types have been preserved for existing set to register? This is the DFT_MTTB_TYPES database configuration parameter - and the default value is 'system', so this adapter will ignore your MQT.

    2) In addition, your assumption DFT_REFRESH_AGE and MQTs created by the user are incorrect. For the MQT maintaining user, the current refresh age register should be set for any refresh so that the proposed MCT can be refreshed.


Comments

Post a Comment

Popular posts from this blog

c# - How to capture HTTP packet with SharpPcap -

-
I would like to capture all incoming HTTP packets on my machine. To do this, I am using SharpPcap which is a WinPcap The cover is. SharpPcap works very well, but it captures TCP packets and what it wants to do for me is a very low level. Does anyone know how can I easily get full HTTP requests / reactions from all these TCP packets? Thanks SharpPcap is already able to capture the packet in the same way That's what the virus does (just in the code instead of the GUI). And you can either either parse them directly or you can put them in the drive in the common .pcap file format. The steps to parse the capture are: Open a connection at any time Loop a while Or start capturing using an event callback Parsing the raw packet for the type you want If you are reading .PPP dump files In addition to calling you an offline capture reader is almost the same, there is no need to select an interface, and you can set the majority There is no need to do the modes. All st...
Read more

php - Multiple Select with Explode: only returns the word "Array" -

-
By using Wordpress I have created a multiple selection box so that users can select categories to exclude. When the page is initially loaded, I see my predefined default option. However, when I select a new value and I save ... I only see the word "Array" and have not chosen anything else? & lt; Class = "amultiple" id = "& lt; php echo $ value ['id'] ;? gt;" name = "& gt; php echo $ value ['id'] ;; gt; []" Multiple = "multiple" size = "8" & gt; & Lt ;? Php global option; Foreign currency ($ value as value $) {if (get_settings ($ value ['id']) === FALSE {$$ value ['id'] = $ value ['std']; } And {$$ value ['id'] = get_settings ($ value ['id']); }} $ Ranges = & amp; Amp; Categories ('type = post & orderbiz = name & amp; hide_empty = 1'); If ($ ranges) {$ ex_cat = implode (',', $ tt_cat_exclude); Forex Currency ($ range a...
Read more

php - jQuery AJAX Post not working -

-
I do not understand why this script does not work. It has something to do within AJAX PostScript / Function. Right now, when I submit my form, it runs php code on the same page. What it should do, send the values ​​of the form for Project_Azax.fp, then there will be a refund of success on the page which is correct or false. $ (document) .ready (function () {$ ('div # didIt'). Hide (); $ ('form [name = adminForm]'). Submit (function () ($ {'.post' ('/ project_ajax.php', {action: $ ('[name = action]') Val (), pId: $ ('[name = pId]'). Val (), name ('[Name = name]'. Val (), url: $ ('[url = url]'). Val (), summary: ('[summary = summary]'). Val ()}, Function (data) {if (data.success) {$ ('div # didIt') .Sliddown ('slow');} and {warning ('unsuccessful SA!');}}, 'Jason'); return false ;});}); What is the code for project_ajax.php below ... if ($ _ POST ['action'] == ...
Read more