Reviewed-by statistics for PostgreSQL commits in Q1 2026 ========================================================= (2026-01-01 through 2026-03-31) Methodology ----------- Parsed Reviewed-by: tags from git log for commits dated 2026-01-01 through 2026-03-31 on the following branches: origin/master origin/REL_14_STABLE origin/REL_15_STABLE origin/REL_16_STABLE origin/REL_17_STABLE origin/REL_18_STABLE REL_13_STABLE is excluded: it reached end-of-life in November 2025 and has no commits in Q1 2026. REL_18_STABLE is included as a proper stable branch: it branched from master on 2025-06-29 (PG18 feature freeze) and receives only bug fixes in Q1 2026. For stable branches, a Reviewed-by entry is counted only if the same (reviewer email, commit subject) pair does not already appear in master commits for the quarter. This avoids double-counting reviews of patches that were committed to master and then backpatched. Known aliases (same person, multiple email addresses) were merged: Alvaro Herrera, Chao Li, Fujii Masao, Heikki Linnakangas, Zsolt Parragi, Viktor Holmberg, Surya Poondla, Aleksander Alekseev, Andrei Lepikhov, Daniel Gustafsson, Jacob Champion, Matheus Alcantara, Peter Eisentraut, Robert Haas, Sami Imseih, Thomas Munro, Tomas Vondra. Name spelling follows what appears most frequently in commit messages. A few entries in the lower ranks appear to be GitHub handles rather than real names (torikoshia, songjinzhou, zengman, Jinbinge); these are reproduced verbatim from the commit log. One entry (Ilya Cherdakov) was transliterated from Cyrillic as it appeared in the commit message. Summary (master branch) ----------------------- Total commits on master in Q1 2026: 865 Commits with at least one Reviewed-by: 523 (60.5%) Total Reviewed-by entries on master: 1031 Unique reviewers (master): 150 Top reviewers ------------- Rank Name Master Backport Total ---- ------------------------------ ------ -------- ----- 1 Chao Li 135 0 135 2 Tom Lane 56 0 56 3 Andres Freund 55 0 55 4 Kirill Reshke 35 1 36 5 Michael Paquier 35 0 35 6 Fujii Masao 29 0 29 7 Alvaro Herrera 26 0 26 8 Zsolt Parragi 24 0 24 9 Heikki Linnakangas 23 0 23 10 Amit Kapila 21 1 22 11 Bertrand Drouvot 17 1 18 12 Melanie Plageman 17 0 17 13 Jelte Fennema-Nio 17 0 17 14 Andrew Dunstan 16 0 16 15 John Naylor 16 0 16 16 Masahiko Sawada 14 1 15 17 Ashutosh Bapat 14 0 14 18 Nathan Bossart 14 0 14 19 Andrey Borodin 13 1 14 20 Nazir Bilal Yavuz 13 0 13 21 Junwang Zhao 13 0 13 22 Greg Burd 12 0 12 23 Sami Imseih 12 0 12 24 David Rowley 11 0 11 25 Jakub Wartak 11 0 11 26 Lukas Fittl 11 0 11 27 Matheus Alcantara 11 0 11 28 Noah Misch 10 1 11 29 Peter Eisentraut 11 0 11 30 Shveta Malik 11 0 11 31 Andreas Karlsson 10 0 10 32 Euler Taveira 10 0 10 33 Japin Li 10 0 10 34 Hayato Kuroda 7 1 8 35 Amul Sul 8 0 8 36 Alexandra Wang 7 0 7 37 Amit Langote 7 0 7 38 li carol 7 0 7 39 Robert Treat 7 0 7 40 Shinya Kato 7 0 7 41 Peter Smith 7 0 7 42 zengman 7 0 7 43 Henson Choi 6 0 6 44 David Geier 6 0 6 45 Jacob Champion 6 0 6 46 Wenhui Qiu 6 0 6 47 Robert Haas 6 0 6 48 Soumya S Murali 6 0 6 49 Tomas Vondra 6 0 6 50 Haibo Yan 6 0 6 51 Alexander Korotkov 5 0 5 52 Corey Huinker 5 0 5 53 Daniel Gustafsson 4 1 5 54 David G. Johnston 5 0 5 55 Dean Rasheed 5 0 5 56 Dilip Kumar 5 0 5 57 Srinath Reddy Sadipiralla 5 0 5 58 Thomas Munro 5 0 5 59 Mircea Cadariu 4 0 4 60 Neil Chen 4 0 4 61 Greg Sabino Mullane 4 0 4 62 Tender Wang 4 0 4 63 Viktor Holmberg 4 0 4 64 Xuneng Zhou 4 0 4 65 Aleksander Alekseev 3 0 3 66 Matthias van de Meent 3 0 3 67 Fabrizio de Royes Mello 3 0 3 68 Zhijie Hou 3 0 3 69 Jian He 3 0 3 70 Laurenz Albe 3 0 3 71 Steven Niu 3 0 3 72 Paul A Jungwirth 3 0 3 73 Surya Poondla 3 0 3 74 Ajay Pal 2 0 2 75 Bharath Rupireddy 2 0 2 76 ChangAo Chen 2 0 2 77 Chengpeng Yan 2 0 2 78 Dewei Dai 2 0 2 79 Richard Guo 2 0 2 80 Kyotaro Horiguchi 2 0 2 81 Huseyin Demir 2 0 2 82 Jim Jones 2 0 2 83 Joel Jacobson 2 0 2 84 Alexander Borisov 2 0 2 85 Ayoub Kazar 2 0 2 86 Nisha Moond 2 0 2 87 Jeff Davis 2 0 2 88 Shlok Kyal 2 0 2 89 torikoshia 2 0 2 90 songjinzhou 2 0 2 91 Nikhil Kumar Veldanda 2 0 2 92 Vignesh C 2 0 2 93 Yang Yuanzhuo 1 0 1 94 Wang Peng 1 0 1 95 Tan Yang 1 0 1 96 Dmitry Dolgov 1 0 1 (150 unique reviewers in total; ranks 97-150 each have 1 master review) Notes ----- - Data source: git log on the branches listed above, commits dated 2026-01-01 through 2026-03-31, field Reviewed-by: in commit body. - Reviewed-by tag coverage improved compared to full-year 2025: 60.5% of master commits carry at least one Reviewed-by tag in Q1 2026, vs 52.9% for all of 2025. - The Backport column counts unique (reviewer, commit subject) pairs that appear in stable branches but not in master during the same quarter. Most backport commits carry the same Reviewed-by lines as the original master commit and are therefore not counted again. - Corrections welcome, especially for name aliases not yet merged.