Db2

Db2

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  • 1.  DB2 12.1.3, MODEL_JOIN_CARD

    Posted 16 hours ago

    Hello, 

    DB2 12.1.3 support cardinality models for join predicate selectivity estimation (Changed functionality in Db2 12.1.3)  the documentation dont say if we need to put:

    DB2_SELECTIVITY="MODEL_JOIN_CARD" or DB2_SELECTIVITY="MODEL_JOIN_CARD=YES"

    i'am looking for the limit of MODEL_JOIN_CARD.

    Best regards,

     



    ------------------------------
    malek shabou
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  • 2.  RE: DB2 12.1.3, MODEL_JOIN_CARD

    Posted 14 hours ago

    Please DB2_SELECTIVITY=MODEL_JOIN_CARD ON



    ------------------------------
    Madhusudan S M
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  • 3.  RE: DB2 12.1.3, MODEL_JOIN_CARD

    Posted 13 hours ago

    thank you,

    is it compatible with db2set -im or i need to restart the instance ?

    Best regards,



    ------------------------------
    malek shabou
    ------------------------------



  • 4.  RE: DB2 12.1.3, MODEL_JOIN_CARD

    Posted 13 hours ago

    Yes, it is compatible with db2set -im 



    ------------------------------
    Madhusudan S M
    ------------------------------