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mrigger merged 1 commit into from
Oct 22, 2026
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Add SQLWitness project, paper links, and November seminar #178

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20 changes: 20 additions & 0 deletions content/event/261118.md
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---
title: "Efficient Dialect-Agnostic SQL Equivalence Refutation"

event: Weekly Talk
summary: "Junwen An presents SQLWitness, a dialect-agnostic SQL equivalence refutation engine."
abstract: "SQLWitness identifies inequivalent SQL queries by generating database instances on which they return different results. It uses the DBMS execution engine to capture dialect-specific semantics, combines a constrained data-generation space with integrity-constraint-aware generation, and uses predicate coverage and statistical estimation to guide termination."

# The talk time has not yet been specified.
date: "2026-11-18T00:00:00+08:00"
all_day: true
publishDate: "2026-10-22T00:00:00+08:00"

authors: [Junwen An]
tags: [Weekly Talk]
featured: false

url_code: "https://github.com/wanteatfruit/SQLWitness"
url_pdf: "https://arxiv.org/pdf/2610.22442"
projects: [sqlwitness]
---
2 changes: 1 addition & 1 deletion content/event/_index.md
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Expand Up @@ -23,7 +23,7 @@ Timetable for upcoming events in AY26/27 (subject to changes):
| ------ | ------------------------------------------------------------ | --------- | ---------- |
| Dec 2 | | --- | --- |
| Nov 25 | | --- | --- |
| Nov 18 | | --- | --- |
| Nov 18 | <font color=brown>Efficient Dialect-Agnostic SQL Equivalence Refutation</font> | Junwen An | --- |
| Nov 11 | <font color=brown>Yibo Dry Run</font> | --- | ---|
| Nov 4 | <font color=brown>FYP Dry Run</font> | --- | ---|
| Oct 28 | <font color=brown>Ningke Dry Run</font> | --- | ---|
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15 changes: 15 additions & 0 deletions content/project/sqlwitness/index.md
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---
title: "SQLWitness"
summary: ""
authors: []
tags: []
categories: []
date: 2026-10-22T00:00:00+08:00

external_link: "https://github.com/wanteatfruit/SQLWitness"

url_code: "https://github.com/wanteatfruit/SQLWitness"
url_pdf: "https://arxiv.org/pdf/2610.22442"
---

SQLWitness is a dialect-agnostic SQL equivalence refutation engine that generates database instances on which two queries produce different results.
4 changes: 2 additions & 2 deletions content/publication/2027-sigmod-sql-equivalence-refutation/index.md
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Expand Up @@ -21,11 +21,11 @@ publication_short: In *SIGMOD 2027*

abstract: ""

#url_pdf:
url_pdf: "https://arxiv.org/pdf/2610.22442"
#url_code: '#'
#url_dataset: '#'
#url_poster: '#'
#url_project: ''
url_project: "https://github.com/wanteatfruit/SQLWitness"
#url_slides: ''
#url_source: '#'
#url_video: '#'
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