Max Popenker (mpopenker) wrote,
Max Popenker
mpopenker

тяжелое наследие темных времен

...не SAPерам можно дальше не читать :)
I asked sap support why table BSEG is implemented as a cluster table in the first place (I can see the logic behind grouping several small tables that have the same key in one database tables, but this doesn't apply to BSEG). SAP support replied that this is caused by design decisions that were made in the early 90's when database systems and computer hardware were more limited then they are today.
http://it.toolbox.com/blogs/sap-on-db2/select-from-bsegrfblg-performance-problem-14247

чем-то напомнило легендарное "640килобайт ОЗУ должно хватать для любой програмы", приписываемое Биллу Г.
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