{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,9,26]],"date-time":"2025-09-26T17:05:17Z","timestamp":1758906317111,"version":"3.44.0"},"publisher-location":"New York, NY, USA","reference-count":36,"publisher":"ACM","license":[{"start":{"date-parts":[[2024,6,9]],"date-time":"2024-06-09T00:00:00Z","timestamp":1717891200000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by-nc\/4.0\/"}],"content-domain":{"domain":["dl.acm.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2024,6,10]]},"DOI":"10.1145\/3662010.3663452","type":"proceedings-article","created":{"date-parts":[[2024,5,30]],"date-time":"2024-05-30T10:30:07Z","timestamp":1717065007000},"page":"1-10","update-policy":"https:\/\/doi.org\/10.1145\/crossmark-policy","source":"Crossref","is-referenced-by-count":4,"title":["NULLS!: Revisiting Null Representation in Modern Columnar Formats"],"prefix":"10.1145","author":[{"ORCID":"https:\/\/orcid.org\/0009-0002-6858-1457","authenticated-orcid":false,"given":"Xinyu","family":"Zeng","sequence":"first","affiliation":[{"name":"Tsinghua University"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2311-4476","authenticated-orcid":false,"given":"Ruijun","family":"Meng","sequence":"additional","affiliation":[{"name":"Tsinghua University"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6040-6991","authenticated-orcid":false,"given":"Andrew","family":"Pavlo","sequence":"additional","affiliation":[{"name":"Carnegie Mellon University"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4028-1639","authenticated-orcid":false,"given":"Wes","family":"McKinney","sequence":"additional","affiliation":[{"name":"Posit PBC"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-4821-1558","authenticated-orcid":false,"given":"Huanchen","family":"Zhang","sequence":"additional","affiliation":[{"name":"Tsinghua University"}]}],"member":"320","published-online":{"date-parts":[[2024,6,9]]},"reference":[{"key":"e_1_3_2_1_1_1","unstructured":"2018. Iterating over set bits quickly (SIMD edition). https:\/\/lemire.me\/blog\/2018\/03\/08\/iterating-over-set-bits-quickly-simd-edition\/."},{"key":"e_1_3_2_1_2_1","unstructured":"2019. Really fast bitset decoding for \"average\" densities. https:\/\/lemire.me\/blog\/2019\/05\/03\/really-fast-bitset-decoding-for-average-densities\/."},{"key":"e_1_3_2_1_3_1","unstructured":"2024. Aligning Velox and Apache Arrow: Towards composable data management. https:\/\/engineering.fb.com\/2024\/02\/20\/developer-tools\/velox-apache-arrow-15-composable-data-management\/."},{"key":"e_1_3_2_1_4_1","unstructured":"2024. Apache Arrow. https:\/\/arrow.apache.org\/."},{"key":"e_1_3_2_1_5_1","unstructured":"2024. Apache Arrow DataFusion. https:\/\/github.com\/apache\/arrow-datafusion\/."},{"key":"e_1_3_2_1_6_1","unstructured":"2024. Apache ORC. https:\/\/orc.apache.org\/."},{"key":"e_1_3_2_1_7_1","unstructured":"2024. Apache Parquet. https:\/\/parquet.apache.org\/."},{"volume-title":"https:\/\/github.com\/apache\/arrow\/blob\/1eb46f763a73d313466fdc895eae1f35fac37945\/cpp\/src\/arrow\/util\/spaced.h#L66-L94","author":"Conversion Arrow","key":"e_1_3_2_1_8_1","unstructured":"2024. Arrow C++ C->S Conversion. https:\/\/github.com\/apache\/arrow\/blob\/1eb46f763a73d313466fdc895eae1f35fac37945\/cpp\/src\/arrow\/util\/spaced.h#L66-L94."},{"key":"e_1_3_2_1_9_1","unstructured":"2024. Dremio. https:\/\/www.dremio.com\/."},{"key":"e_1_3_2_1_10_1","unstructured":"2024. Influx Data FDAP stack. https:\/\/www.influxdata.com\/glossary\/fdap-stack\/."},{"key":"e_1_3_2_1_11_1","unstructured":"2024. MonetDB Data Compression Doc. https:\/\/www.monetdb.org\/documentation-Dec2023\/admin-guide\/system-resources\/data-compression\/."},{"key":"e_1_3_2_1_12_1","unstructured":"2024. Velox's SIMDized BM to SV. https:\/\/github.com\/facebookincubator\/velox\/blob\/02ca9b0b4f554868b533d2f6526a480ea1e7d035\/velox\/common\/base\/SimdUtil-inl.h#L179."},{"key":"e_1_3_2_1_13_1","first-page":"292","article-title":"Column Stores for Wide and Sparse Data","volume":"2007","author":"Abadi Daniel J","year":"2007","unstructured":"Daniel J Abadi et al. 2007. Column Stores for Wide and Sparse Data.. In CIDR, Vol. 2007. 292--297.","journal-title":"CIDR"},{"key":"e_1_3_2_1_14_1","doi-asserted-by":"publisher","DOI":"10.14778\/3598581.3598587"},{"key":"e_1_3_2_1_15_1","first-page":"21","article-title":"Vectorwise: Beyond column stores","volume":"35","author":"Boncz PA","year":"2012","unstructured":"PA Boncz and M Zukowski. 2012. Vectorwise: Beyond column stores. IEEE Data Engineering Bulletin 35, 1 (2012), 21--27.","journal-title":"IEEE Data Engineering Bulletin"},{"key":"e_1_3_2_1_16_1","unstructured":"Peter A. Boncz Marcin Zukowski and Niels Nes. 2005. MonetDB\/X100: Hyper-Pipelining Query Execution. In CIDR."},{"key":"e_1_3_2_1_17_1","first-page":"1","article-title":"Understanding Relations (Installment #6)","volume":"7","author":"Codd E. F.","year":"1975","unstructured":"E. F. Codd. 1975. Understanding Relations (Installment #6). FDT Bull. ACM SIGFIDET SIGMOD 7, 1 (1975), 1--4.","journal-title":"FDT Bull. ACM SIGFIDET SIGMOD"},{"key":"e_1_3_2_1_18_1","doi-asserted-by":"publisher","DOI":"10.1145\/320107.320109"},{"key":"e_1_3_2_1_19_1","doi-asserted-by":"publisher","DOI":"10.14778\/3476249.3476297"},{"key":"e_1_3_2_1_20_1","doi-asserted-by":"publisher","DOI":"10.1007\/S00778-008-0110-5"},{"key":"e_1_3_2_1_21_1","doi-asserted-by":"publisher","DOI":"10.1145\/3448016.3457283"},{"key":"e_1_3_2_1_22_1","volume-title":"SOSD: A Benchmark for Learned Indexes. CoRR abs\/1911.13014","author":"Kipf Andreas","year":"2019","unstructured":"Andreas Kipf, Ryan Marcus, Alexander van Renen, Mihail Stoian, Alfons Kemper, Tim Kraska, and Thomas Neumann. 2019. SOSD: A Benchmark for Learned Indexes. CoRR abs\/1911.13014 (2019). arXiv:1911.13014 http:\/\/arxiv.org\/abs\/1911.13014"},{"key":"e_1_3_2_1_23_1","doi-asserted-by":"publisher","DOI":"10.1145\/3589263"},{"key":"e_1_3_2_1_24_1","doi-asserted-by":"publisher","DOI":"10.1002\/spe.2203"},{"key":"e_1_3_2_1_25_1","volume-title":"SIMD Compression and the Intersection of Sorted Integers. CoRR abs\/1401.6399","author":"Lemire Daniel","year":"2014","unstructured":"Daniel Lemire, Leonid Boytsov, and Nathan Kurz. 2014. SIMD Compression and the Intersection of Sorted Integers. CoRR abs\/1401.6399 (2014). arXiv:1401.6399 http:\/\/arxiv.org\/abs\/1401.6399"},{"key":"e_1_3_2_1_26_1","doi-asserted-by":"publisher","DOI":"10.1002\/spe.2402"},{"key":"e_1_3_2_1_27_1","doi-asserted-by":"publisher","DOI":"10.14778\/3611479.3611507"},{"key":"e_1_3_2_1_28_1","doi-asserted-by":"publisher","DOI":"10.1145\/3639320"},{"key":"e_1_3_2_1_29_1","volume-title":"Performance of Null Handling in Array Databases. In 2023 IEEE International Conference on Big Data (BigData). IEEE, 247--254","author":"Mi\u0161ev Dimitar","year":"2023","unstructured":"Dimitar Mi\u0161ev, Mikhail Rodionychev, and Peter Baumann. 2023. Performance of Null Handling in Array Databases. In 2023 IEEE International Conference on Big Data (BigData). IEEE, 247--254."},{"key":"e_1_3_2_1_30_1","doi-asserted-by":"publisher","DOI":"10.1145\/3465998.3466009"},{"key":"e_1_3_2_1_31_1","doi-asserted-by":"publisher","DOI":"10.1145\/3299869.3320212"},{"key":"e_1_3_2_1_32_1","doi-asserted-by":"publisher","DOI":"10.14778\/2536222.2536233"},{"key":"e_1_3_2_1_33_1","doi-asserted-by":"publisher","DOI":"10.1145\/974750.974755"},{"key":"e_1_3_2_1_34_1","doi-asserted-by":"publisher","DOI":"10.14778\/3551793.3551818"},{"key":"e_1_3_2_1_35_1","doi-asserted-by":"publisher","DOI":"10.1145\/3209950.3209952"},{"key":"e_1_3_2_1_36_1","doi-asserted-by":"publisher","DOI":"10.14778\/3626292.3626298"}],"event":{"name":"SIGMOD\/PODS '24: International Conference on Management of Data","sponsor":["SIGMOD ACM Special Interest Group on Management of Data"],"location":"Santiago AA Chile","acronym":"SIGMOD\/PODS '24"},"container-title":["Proceedings of the 20th International Workshop on Data Management on New Hardware"],"original-title":[],"link":[{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3662010.3663452","content-type":"unspecified","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/dl.acm.org\/doi\/pdf\/10.1145\/3662010.3663452","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,8,23]],"date-time":"2025-08-23T18:04:57Z","timestamp":1755972297000},"score":1,"resource":{"primary":{"URL":"https:\/\/dl.acm.org\/doi\/10.1145\/3662010.3663452"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2024,6,9]]},"references-count":36,"alternative-id":["10.1145\/3662010.3663452","10.1145\/3662010"],"URL":"https:\/\/doi.org\/10.1145\/3662010.3663452","relation":{},"subject":[],"published":{"date-parts":[[2024,6,9]]},"assertion":[{"value":"2024-06-09","order":3,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}