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Issues6 (6)

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DataManagementLab/deepdb-public

Cardinality Estimation Anomalies for ORDERKEY and PARTKEY in TPC-H Dataset (SF=1)

I ve been working with the TPC-H dataset (Scale Factor 1) in DeepDB and noticed an unusual pattern in cardinality estimation (CE). Specifically, when querying numerical columns with limited distinct values ...

• Koki05410
·
• Opened 
  on Jan 31, 2024
·
• #19

DataManagementLab/deepdb-public

Problem during reproducing SSB experiment's results

Hi, Thank you for great work! I am reproducing results for the SSB dataset. Due to limited storage, I generated the SSB (SF=10) with the unified SSB generator (https://github.com/eyalroz/ssb-dbgen). However, ...

• SEICS
·
• Opened 
  on Dec 22, 2022
·
• #18

DataManagementLab/deepdb-public

Non tree graphs

Hi there, Thank you for the code, I am wondering if this can be used in non-tree schemas such as JOB (full IMDB) ? Thanks,

• Issam28
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• 1
·
• Opened 
  on Apr 29, 2021
·
• #12

DataManagementLab/deepdb-public

What's the 'no_compression' attribute means?

Hi, I want to inject new datasets and what s the no_compression attribute means? Why we need to set all attributes to no_compression by default? Best, Kangfei

• Kangfei
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• 3
·
• Opened 
  on Apr 25, 2021
·
• #11

DataManagementLab/deepdb-public

Learning a Partitioning Advisor for Cloud Databases

Hello Professor, I am very interested in database partitioning, especially the combination with reinforcement learning. Is it convenient for you to share the code of this paper?

• wy1211
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• Opened 
  on Apr 15, 2021
·
• #9

DataManagementLab/deepdb-public

tpcds-single table cardinality estimation

I wonder if it is possible to do single table (single SPN) cardinality estimation without modifying the code in SPNensemble class. I tried with a single table toy dataset and it run into a lot of errors. ...

• wuziniu
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• 4
·
• Opened 
  on Jun 17, 2020
·
• #6

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