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How to analyze statistics on local temporary tables in vertica

VinnuVinnu
in General Discussion

How to analyze statistics on local temporary tables in vertica ?

Vertica Database Version - 7.2.3

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    SruthiASruthiA Vertica Employee Administrator

    Temporary tables are session scoped. Why do you want to analyze statistics on them?

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    AaduAadu

    Hi Sruthi, 

     

    Temporary tables that are getting created are huge in size and are further used in joins in the same session. Un analyzed or no statistics are creating wrong query plans.

     

    I can now analyze them. I was passing wrong command to analyze them.

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    Adrian_Oprea_1Adrian_Oprea_1

     Hi ,

     

    ANALYZE_STATISTICS is supported on local temporary tables and you must create the table with the option ON COMMIT PRESERVE ROWS.

     

     

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    Adrian_Oprea_1Adrian_Oprea_1

     Make sure you also watch the sort key as well

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