diff --git a/.github/workflows/cqn4sql-benchmarks.yml b/.github/workflows/cqn4sql-benchmarks.yml
new file mode 100644
index 000000000..0c20c6ba2
--- /dev/null
+++ b/.github/workflows/cqn4sql-benchmarks.yml
@@ -0,0 +1,60 @@
+name: cqn4sql benchmarks + visualization
+
+on:
+  push:
+    branches: [ patrice/cds-test-perfomance ]
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: true
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 1
+
+      - name: Setup Node
+        uses: actions/setup-node@v4
+        with:
+          node-version: 20
+          cache: npm
+
+      - name: Install dependencies
+        run: npm ci
+      
+      # this needs the cds-test PR to be merged first
+      # - name: Run benchmarks
+      #   run: |
+      #     cd ./db-service/bench/cqn4sql && CDS_BENCH=true cds test
+
+      - name: Build visualization
+        run: |
+          cd ./db-service/bench/cqn4sql
+          mkdir -p dist
+          node utils/visualize-benchmarks.js results/cqn4sql-benchmarks.json dist/index.html
+
+      - name: Upload Pages artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./db-service/bench/cqn4sql/dist
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    needs: build
+    runs-on: ubuntu-latest
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4
diff --git a/db-service/bench/cqn4sql/model/schema.cds b/db-service/bench/cqn4sql/model/schema.cds
new file mode 100644
index 000000000..52d2ef78c
--- /dev/null
+++ b/db-service/bench/cqn4sql/model/schema.cds
@@ -0,0 +1,34 @@
+namespace my;
+
+entity Books {
+  key ID     : Integer;
+      title  : String;
+      stock  : Integer;
+      author : Association to Authors;
+      genre  : Association to Genres;
+}
+
+entity BooksWithCalc : Books {
+  authorFullName = author.firstName || ' ' || author.lastName;
+}
+
+entity Authors {
+  key ID          : Integer;
+      firstName   : String;
+      lastName    : String;
+      dateOfBirth : Date;
+      dateOfDeath : Date;
+      books       : Association to many Books
+                      on books.author = $self;
+}
+
+@cds.search: { books }
+entity AuthorsSearchBooks : Authors {}
+
+entity Genres {
+  key ID       : Integer;
+      name     : String;
+      parent   : Association to Genres;
+      children : Composition of many Genres
+                   on children.parent = $self;
+}
diff --git a/db-service/bench/cqn4sql/performance-benchmarks.test.js b/db-service/bench/cqn4sql/performance-benchmarks.test.js
new file mode 100644
index 000000000..67a333c93
--- /dev/null
+++ b/db-service/bench/cqn4sql/performance-benchmarks.test.js
@@ -0,0 +1,66 @@
+'use strict'
+
+if (process.env.CDS_BENCH === 'true') {
+  const cds = require('@sap/cds')
+  const { writeDump } = require('./utils/format-benchmarks')
+  
+  let cqn4sql = require('../../lib/cqn4sql')
+  
+  const {
+    perf,
+  } = cds.test
+  
+  const report = (what, options) => perf.report(what, { store: true, stats: { requests: true }, ...options })
+  
+  describe('cqn4sql performance benchmarks', () => {
+    beforeEach(async () => {
+      const m = await cds.load([__dirname + '/model/schema']).then(cds.linked)
+      const orig = cqn4sql // keep reference to original to avoid recursion
+      cqn4sql = q => orig(q, m)
+    })
+  
+    after('format & write dump', () => {
+      writeDump({ testFile: __filename })
+    })
+  
+    runBenchmarkFor('select simple', cds.ql`SELECT from my.Books { ID }`)
+    
+    runBenchmarkFor('select wildcard', cds.ql`SELECT from my.Books { * }`)
+    runBenchmarkFor('select wildcard with calculated element', cds.ql`SELECT from my.BooksWithCalc { * }`)
+  
+    runBenchmarkFor('expand simple', cds.ql`SELECT from my.Authors { ID, books { title } }`)
+    runBenchmarkFor('expand recursive (depth 3)', cds.ql`SELECT from my.Genres { ID, parent { parent { parent { name }}} }`)
+  
+    runBenchmarkFor('exists simple', cds.ql`SELECT from my.Genres { ID } where exists parent`)
+    runBenchmarkFor('exists simple with path expression', cds.ql`SELECT from my.Genres { ID } where exists parent[parent.name = 'foo']`)
+    runBenchmarkFor('exists recursive (depth 3)', cds.ql`SELECT from my.Genres { ID } where exists parent.parent.parent`)
+  
+    runBenchmarkFor('assoc2join simple', cds.ql`SELECT from my.Books { ID, author.firstName }`)
+    runBenchmarkFor('assoc2join recursive (depth 3)', cds.ql`SELECT from my.Genres { ID, parent.parent.parent.name }`)
+
+    runBenchmarkFor('@cds.search simple', SELECT.from('my.Authors').columns('ID', 'firstName', 'lastName').search('Tolkien'))
+    runBenchmarkFor('@cds.search deep',   SELECT.from('my.AuthorsSearchBooks').columns('ID', 'firstName', 'lastName').search('The Lord of the Rings'))
+
+    runBenchmarkFor('scoped query', cds.ql`SELECT from my.Books:author { name }`)
+  })
+  
+  
+  function runBenchmarkFor(name, cqn) {
+    it(name, async () =>
+      report(
+        await perf.fn(
+          () => {
+            cqn4sql(cqn)
+          },
+          {
+            title: name,
+            warmup: {
+              duration: '3s',
+            },
+            duration: '10s',
+          },
+        ),
+      ),
+    )
+  }  
+}
diff --git a/db-service/bench/cqn4sql/results/cqn4sql-benchmarks.json b/db-service/bench/cqn4sql/results/cqn4sql-benchmarks.json
new file mode 100644
index 000000000..8e1d0828b
--- /dev/null
+++ b/db-service/bench/cqn4sql/results/cqn4sql-benchmarks.json
@@ -0,0 +1 @@
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diff --git a/db-service/bench/cqn4sql/results/perf-benchmarks.html b/db-service/bench/cqn4sql/results/perf-benchmarks.html
new file mode 100644
index 000000000..a8c87f649
--- /dev/null
+++ b/db-service/bench/cqn4sql/results/perf-benchmarks.html
@@ -0,0 +1,96 @@
+<!doctype html>
+<html lang="en">
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
+<title>CQN4SQL Benchmarks</title>
+<style>
+  :root { --fg:#111; --muted:#666; }
+  body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Arial; margin: 24px; color: var(--fg); }
+  h1 { margin: 0 0 8px; font-size: 20px; }
+  #chart { width: 100%; height: 72vh; }
+  .meta { margin: 6px 0 12px; color: var(--muted); font-size: 12px; }
+  label { font-size: 12px; margin-right: 6px; color: var(--muted); }
+  select { font-size: 12px; margin-right: 12px; }
+</style>
+
+<h1>CQN4SQL Benchmarks</h1>
+<div class="meta">
+  Data: cqn4sql-benchmarks.json • Commits: 13
+  <br>
+  Measurements in requests per second (higher is better)
+</div>
+
+<div>
+  <label for="metric">Metric:</label>
+  <select id="metric"></select>
+
+  <label for="bench">Benchmark:</label>
+  <select id="bench"><option value="__all__">All</option></select>
+</div>
+
+<div id="chart"></div>
+
+<script src="https://cdn.plot.ly/plotly-2.35.2.min.js"></script>
+<script>
+  const COMMITS = ["8ea5c2b9","19731f02","95c3b619","0d15c979","c8575c73","b1185062","661cb21d","894466ad","8ef8958b","589006ca","f31fbb68","f8035155","e012aa8b"];
+  const COMMIT_DATES = ["2025-08-27T15:03:45.583Z","2025-08-27T15:06:07.491Z","2025-08-27T15:21:15.094Z","2025-08-27T15:47:11.987Z","2025-08-27T15:47:51.334Z","2025-08-27T15:50:34.031Z","2025-08-27T15:53:50.826Z","2025-08-27T15:55:43.622Z","2025-08-27T16:09:15.187Z","2025-08-27T16:51:33.834Z","2025-08-28T09:34:23.170Z","2025-08-28T10:27:33.581Z","2025-09-26T11:39:31.733Z"];
+    // labels like: <sha> (YYYY-MM-DD)
+  const COMMIT_LABELS = ["8ea5c2b9 (2025-08-27)","19731f02 (2025-08-27)","95c3b619 (2025-08-27)","0d15c979 (2025-08-27)","c8575c73 (2025-08-27)","b1185062 (2025-08-27)","661cb21d (2025-08-27)","894466ad (2025-08-27)","8ef8958b (2025-08-27)","589006ca (2025-08-27)","f31fbb68 (2025-08-28)","f8035155 (2025-08-28)","e012aa8b (2025-09-26)"];
+  const METRICS = ["mean","stddev","total","p50","p90","p99","min","max"];
+  const INITIAL_METRIC = "mean";
+  const BENCH_NAMES = ["@cds.search deep","@cds.search simple","assoc2join recursive (depth 3)","assoc2join simple","exists recursive (depth 3)","exists simple","exists simple with path expression","expand recursive (depth 3)","expand simple","select simple","select wildcard","select wildcard with calculated element"];
+  const ALL_SERIES = {"mean":[{"name":"@cds.search deep","x":["8ea5c2b9","19731f02","95c3b619","0d15c979","c8575c73","b1185062","661cb21d","894466ad","8ef8958b","589006ca","f31fbb68","f8035155","e012aa8b"],"y":[null,null,null,null,null,null,null,null,null,null,null,null,48375.12]},{"name":"@cds.search simple","x":["8ea5c2b9","19731f02","95c3b619","0d15c979","c8575c73","b1185062","661cb21d","894466ad","8ef8958b","589006ca","f31fbb68","f8035155","e012aa8b"],"y":[null,null,null,null,null,null,null,null,null,null,null,null,50128]},{"name":"assoc2join recursive (depth 3)","x":["8ea5c2b9","19731f02","95c3b619","0d15c979","c8575c73","b1185062","661cb21d","894466ad","8ef8958b","589006ca","f31fbb68","f8035155","e012aa8b"],"y":[42480,45888,45600,45984,45456,45232,45984,46080,44128,45296,44133.34,42743.12,44972.45]},{"name":"assoc2join 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wildcard","x":["8ea5c2b9","19731f02","95c3b619","0d15c979","c8575c73","b1185062","661cb21d","894466ad","8ef8958b","589006ca","f31fbb68","f8035155","e012aa8b"],"y":[null,null,null,null,null,null,null,null,null,null,77921,80393,79941]},{"name":"select wildcard with calculated element","x":["8ea5c2b9","19731f02","95c3b619","0d15c979","c8575c73","b1185062","661cb21d","894466ad","8ef8958b","589006ca","f31fbb68","f8035155","e012aa8b"],"y":[null,null,null,null,null,null,null,null,null,null,33651,34001,34744]}]};
+
+  const metricEl = document.getElementById('metric');
+  METRICS.forEach(m => {
+    const opt = document.createElement('option');
+    opt.value = m; opt.textContent = m;
+    if (m === INITIAL_METRIC) opt.selected = true;
+    metricEl.appendChild(opt);
+  });
+
+  const benchEl = document.getElementById('bench');
+  BENCH_NAMES.forEach(n => {
+    const opt = document.createElement('option');
+    opt.value = n; opt.textContent = n;
+    benchEl.appendChild(opt);
+  });
+
+  function tracesFor(metric, benchName) {
+    const base = {
+      mode: 'lines+markers',
+      connectgaps: false,
+      x: COMMITS,
+      customdata: COMMIT_DATES,
+      hovertemplate:
+        '<b>%{fullData.name}</b><br>' +
+        'commit: %{x}<br>' +
+        'value: %{y:.0f}<br>' +
+        '%{customdata|%Y-%m-%d %H:%M:%S}<extra></extra>'
+    };
+    const series = ALL_SERIES[metric] || [];
+    const chosen = benchName === '__all__' ? series : series.filter(s => s.name === benchName);
+    return chosen.map(s => Object.assign({}, base, { name: s.name, y: s.y }));
+  }
+
+  const layout = {
+    xaxis: { title: 'Commit', tickvals: COMMITS, ticktext: COMMIT_LABELS, type: 'category', tickangle: -45, automargin: true },
+    yaxis: { title: 'Requests / second', rangemode: 'tozero' },
+    hovermode: 'x unified',
+    legend: { orientation: 'h' },
+    margin: { l: 60, r: 20, t: 10, b: 80 }
+  };
+
+  function render() {
+    const m = metricEl.value;
+    const b = benchEl.value;
+    const traces = tracesFor(m, b);
+    const l = Object.assign({}, layout, { yaxis: Object.assign({}, layout.yaxis, { title: 'Requests / second ('+m+')' }) });
+    Plotly.newPlot('chart', traces, l, { displayModeBar: true, responsive: true });
+  }
+
+  metricEl.addEventListener('change', render);
+  benchEl.addEventListener('change', render);
+  render();
+</script>
+</html>
\ No newline at end of file
diff --git a/db-service/bench/cqn4sql/utils/format-benchmarks.js b/db-service/bench/cqn4sql/utils/format-benchmarks.js
new file mode 100644
index 000000000..c7a16ffd3
--- /dev/null
+++ b/db-service/bench/cqn4sql/utils/format-benchmarks.js
@@ -0,0 +1,105 @@
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+const { execSync } = require('child_process')
+
+function getCommitShort() {
+  try {
+    return execSync('git rev-parse --short HEAD', { stdio: ['ignore', 'pipe', 'ignore'] })
+      .toString()
+      .trim()
+  } catch {
+    const sha = process.env.GITHUB_SHA || process.env.CI_COMMIT_SHA || ''
+    return sha ? sha.slice(0, 7) : `unknown-${new Date().toISOString().replace(/[:.]/g, '-')}`
+  }
+}
+
+function compactRequests(requests) {
+  return {
+    total: requests.total,
+    mean: requests.mean,
+    min: requests.min,
+    max: requests.max,
+    stddev: requests.stddev,
+    p50: requests.p50,
+    p90: requests.p90,
+    p99: requests.p99,
+  }
+}
+
+function collectBenchmarksForFile(resultsPath, testFileBase) {
+  const lines = fs.existsSync(resultsPath) ? fs.readFileSync(resultsPath, 'utf8').split(/\r?\n/).filter(Boolean) : []
+
+  const benchmarks = {}
+  for (const line of lines) {
+    let obj
+    try {
+      obj = JSON.parse(line)
+    } catch {
+      continue
+    }
+    const key = Object.keys(obj)[0]
+    const data = obj[key]
+    if (!data) continue
+
+    const fromThisFile = data.file === testFileBase || (typeof key === 'string' && key.startsWith(`${testFileBase}:`))
+    if (!fromThisFile) continue
+
+    const title = data.title || key.split(':')[1] || key
+    if (data.requests) benchmarks[title] = compactRequests(data.requests) // keep only subset of "requests"
+  }
+  return benchmarks
+}
+
+/**
+ * Formats & writes the cumulative dump:
+ *   dump[commit] = { date, benchmarks }
+ *
+ * @param {object} opts
+ * @param {string} opts.testFile   absolute __filename of the calling test
+ * @param {string} [opts.resultsFile='results.bench']
+ * @param {string} [opts.dumpFile='perf-benchmarks.json']
+ * @returns {false | {commit:string,file:string,count:number}}
+ */
+function writeDump({
+  testFile,
+  resultsFile = 'results.bench',
+  dumpFile = 'cqn4sql-benchmarks.json',
+  deleteResultsFile = true,
+}) {
+  const testFileBase = path.basename(testFile)
+  const resultsPath = path.resolve(process.cwd(), resultsFile)
+  const dumpPath = path.resolve(process.cwd() + '/results', dumpFile)
+
+  const benchmarks = collectBenchmarksForFile(resultsPath, testFileBase)
+  if (!Object.keys(benchmarks).length) return false
+
+  const commit = getCommitShort()
+  const entry = { date: new Date().toISOString(), benchmarks }
+
+  let dump = {}
+  if (fs.existsSync(dumpPath)) {
+    try {
+      dump = JSON.parse(fs.readFileSync(dumpPath, 'utf8')) || {}
+    } catch {
+      dump = {}
+    }
+  }
+  dump[commit] = entry
+
+  fs.mkdirSync(path.dirname(dumpPath), { recursive: true })
+  fs.writeFileSync(dumpPath, JSON.stringify(dump) + '\n', 'utf8')
+
+  if (deleteResultsFile && fs.existsSync(resultsPath)) {
+    try {
+      fs.unlinkSync(resultsPath)
+    } catch {
+      /* ignore */
+    }
+  }
+
+  return { commit, file: dumpPath, count: Object.keys(benchmarks).length }
+}
+
+module.exports = { writeDump }
diff --git a/db-service/bench/cqn4sql/utils/visualize-benchmarks.js b/db-service/bench/cqn4sql/utils/visualize-benchmarks.js
new file mode 100644
index 000000000..a4600455a
--- /dev/null
+++ b/db-service/bench/cqn4sql/utils/visualize-benchmarks.js
@@ -0,0 +1,171 @@
+#!/usr/bin/env node
+'use strict'
+
+const fs = require('fs')
+const path = require('path')
+
+const dumpPath = process.argv[2] || 'results/cqn4sql-benchmarks.json'
+const outPath  = process.argv[3] || 'dist/index.html'
+
+if (!fs.existsSync(dumpPath)) {
+  // eslint-disable-next-line no-console
+  console.error(`❌ Cannot find ${dumpPath}`)
+  process.exit(1)
+}
+
+const dump = JSON.parse(fs.readFileSync(dumpPath, 'utf8'))
+
+// normalize + sort by date
+const entries = Object.entries(dump)
+  .map(([commit, v]) => ({ commit, dateISO: v.date, date: new Date(v.date), benchmarks: v.benchmarks || {} }))
+  .sort((a, b) => a.date - b.date)
+
+const commits = entries.map(e => e.commit)
+const commitDates = entries.map(e => e.dateISO)
+const commitLabels = commits.map((sha, i) => {
+  const d = new Date(commitDates[i])
+  const y = d.getUTCFullYear()
+  const m = String(d.getUTCMonth() + 1).padStart(2, '0')
+  const day = String(d.getUTCDate()).padStart(2, '0')
+  return `${sha} (${y}-${m}-${day})`
+})
+
+
+// collect benchmark names
+const benchNames = Array.from(
+  entries.reduce((s, e) => {
+    Object.keys(e.benchmarks).forEach(k => s.add(k))
+    return s
+  }, new Set())
+).sort()
+
+// collect available metric keys (union across all benches/commits)
+const metricSet = new Set()
+for (const e of entries) {
+  for (const name of Object.keys(e.benchmarks)) {
+    const obj = e.benchmarks[name]
+    Object.keys(obj || {}).forEach(k => metricSet.add(k))
+  }
+}
+
+const metrics = ['mean', 'stddev', 'total', 'p50', 'p90', 'p99', 'min', 'max']
+const initialMetric = 'mean'
+
+// precompute all series data per metric to keep UI snappy
+function buildSeriesForMetric(metric) {
+  return benchNames.map(name => {
+    const y = entries.map(e => {
+      const obj = e.benchmarks[name]
+      if (!obj) return null
+      const v = obj[metric]
+      return (typeof v === 'number') ? v : (v != null ? Number(v) : null)
+    })
+    return { name, x: commits, y }
+  })
+}
+
+const allSeries = {}
+for (const m of metrics) allSeries[m] = buildSeriesForMetric(m)
+
+// HTML (commit categories on X, metric selector, benchmark filter)
+const html = `<!doctype html>
+<html lang="en">
+<meta charset="utf-8" />
+<meta name="viewport" content="width=device-width, initial-scale=1"/>
+<title>CQN4SQL Benchmarks</title>
+<style>
+  :root { --fg:#111; --muted:#666; }
+  body { font-family: system-ui, -apple-system, Segoe UI, Roboto, Ubuntu, Arial; margin: 24px; color: var(--fg); }
+  h1 { margin: 0 0 8px; font-size: 20px; }
+  #chart { width: 100%; height: 72vh; }
+  .meta { margin: 6px 0 12px; color: var(--muted); font-size: 12px; }
+  label { font-size: 12px; margin-right: 6px; color: var(--muted); }
+  select { font-size: 12px; margin-right: 12px; }
+</style>
+
+<h1>CQN4SQL Benchmarks</h1>
+<div class="meta">
+  Data: ${path.basename(dumpPath)} • Commits: ${entries.length}
+  <br>
+  Measurements in requests per second (higher is better)
+</div>
+
+<div>
+  <label for="metric">Metric:</label>
+  <select id="metric"></select>
+
+  <label for="bench">Benchmark:</label>
+  <select id="bench"><option value="__all__">All</option></select>
+</div>
+
+<div id="chart"></div>
+
+<script src="https://cdn.plot.ly/plotly-2.35.2.min.js"></script>
+<script>
+  const COMMITS = ${JSON.stringify(commits)};
+  const COMMIT_DATES = ${JSON.stringify(commitDates)};
+    // labels like: <sha> (YYYY-MM-DD)
+  const COMMIT_LABELS = ${JSON.stringify(commitLabels)};
+  const METRICS = ${JSON.stringify(metrics)};
+  const INITIAL_METRIC = ${JSON.stringify(initialMetric)};
+  const BENCH_NAMES = ${JSON.stringify(benchNames)};
+  const ALL_SERIES = ${JSON.stringify(allSeries)};
+
+  const metricEl = document.getElementById('metric');
+  METRICS.forEach(m => {
+    const opt = document.createElement('option');
+    opt.value = m; opt.textContent = m;
+    if (m === INITIAL_METRIC) opt.selected = true;
+    metricEl.appendChild(opt);
+  });
+
+  const benchEl = document.getElementById('bench');
+  BENCH_NAMES.forEach(n => {
+    const opt = document.createElement('option');
+    opt.value = n; opt.textContent = n;
+    benchEl.appendChild(opt);
+  });
+
+  function tracesFor(metric, benchName) {
+    const base = {
+      mode: 'lines+markers',
+      connectgaps: false,
+      x: COMMITS,
+      customdata: COMMIT_DATES,
+      hovertemplate:
+        '<b>%{fullData.name}</b><br>' +
+        'commit: %{x}<br>' +
+        'value: %{y:.0f}<br>' +
+        '%{customdata|%Y-%m-%d %H:%M:%S}<extra></extra>'
+    };
+    const series = ALL_SERIES[metric] || [];
+    const chosen = benchName === '__all__' ? series : series.filter(s => s.name === benchName);
+    return chosen.map(s => Object.assign({}, base, { name: s.name, y: s.y }));
+  }
+
+  const layout = {
+    xaxis: { title: 'Commit', tickvals: COMMITS, ticktext: COMMIT_LABELS, type: 'category', tickangle: -45, automargin: true },
+    yaxis: { title: 'Requests / second', rangemode: 'tozero' },
+    hovermode: 'x unified',
+    legend: { orientation: 'h' },
+    margin: { l: 60, r: 20, t: 10, b: 80 }
+  };
+
+  function render() {
+    const m = metricEl.value;
+    const b = benchEl.value;
+    const traces = tracesFor(m, b);
+    const l = Object.assign({}, layout, { yaxis: Object.assign({}, layout.yaxis, { title: 'Requests / second ('+m+')' }) });
+    Plotly.newPlot('chart', traces, l, { displayModeBar: true, responsive: true });
+  }
+
+  metricEl.addEventListener('change', render);
+  benchEl.addEventListener('change', render);
+  render();
+</script>
+</html>`
+
+fs.mkdirSync(path.dirname(outPath), { recursive: true })
+fs.writeFileSync(outPath, html, 'utf8')
+// eslint-disable-next-line no-console
+console.log(`✅ wrote ${outPath} — metrics: [${metrics.join(', ')}], benches: ${benchNames.length}, commits: ${entries.length}`)
diff --git a/db-service/bench/results.bench b/db-service/bench/results.bench
new file mode 100644
index 000000000..8fdb6342c
--- /dev/null
+++ b/db-service/bench/results.bench
@@ -0,0 +1,13 @@
+{"cqn4sql/performance-benchmarks.test.js:select simple":{"title":"select simple","connections":3,"duration":10.00110725,"samples":10,"start":"+016149-11-17T17:59:03.291Z","finish":"2025-10-07T11:14:51.845Z","errors":0,"timeouts":0,"mismatches":0,"non2xx":0,"resets":0,"1xx":0,"2xx":850273,"3xx":0,"4xx":0,"5xx":0,"statusCodeStats":{"200":{"count":850273}},"latency":{"average":0.01,"mean":0.01,"stddev":0.02,"min":1,"max":5,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":0,"p99_999":2,"totalCount":850273},"requests":{"average":85180.45,"mean":85180.45,"stddev":4449.74,"min":73120,"max":88374,"total":850273,"p0_001":73151,"p0_01":73151,"p0_1":73151,"p1":73151,"p2_5":73151,"p10":73151,"p25":84799,"p50":86527,"p75":87359,"p90":88383,"p97_5":88383,"p99":88383,"p99_9":88383,"p99_99":88383,"p99_999":88383,"sent":850273},"throughput":{"average":0,"mean":0,"stddev":0,"min":0,"max":0,"total":0,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":0,"p99_999":0},"file":"cqn4sql/performance-benchmarks.test.js","line":"13:42"}}
+{"cqn4sql/performance-benchmarks.test.js:select wildcard":{"title":"select wildcard","connections":3,"duration":10.000926584,"samples":10,"start":"+016150-04-17T12:31:15.416Z","finish":"2025-10-07T11:15:04.871Z","errors":0,"timeouts":0,"mismatches":0,"non2xx":0,"resets":0,"1xx":0,"2xx":742762,"3xx":0,"4xx":0,"5xx":0,"statusCodeStats":{"200":{"count":742762}},"latency":{"average":0.01,"mean":0.01,"stddev":0.01,"min":1,"max":2,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":0,"p99_999":1,"totalCount":742762},"requests":{"average":74208,"mean":74208,"stddev":2019.81,"min":68841,"max":76092,"total":742762,"p0_001":68863,"p0_01":68863,"p0_1":68863,"p1":68863,"p2_5":68863,"p10":68863,"p25":73983,"p50":74879,"p75":75071,"p90":76095,"p97_5":76095,"p99":76095,"p99_9":76095,"p99_99":76095,"p99_999":76095,"sent":742762},"throughput":{"average":0,"mean":0,"stddev":0,"min":0,"max":0,"total":0,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":0,"p99_999":0},"file":"cqn4sql/performance-benchmarks.test.js","line":"13:42"}}
+{"cqn4sql/performance-benchmarks.test.js:select wildcard with calculated element":{"title":"select wildcard with calculated element","connections":3,"duration":10.0010655,"samples":10,"start":"+016150-09-15T07:02:41.208Z","finish":"2025-10-07T11:15:17.898Z","errors":0,"timeouts":0,"mismatches":0,"non2xx":0,"resets":0,"1xx":0,"2xx":312764,"3xx":0,"4xx":0,"5xx":0,"statusCodeStats":{"200":{"count":312764}},"latency":{"average":0.01,"mean":0.01,"stddev":0.02,"min":1,"max":5,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":1,"p99_999":2,"totalCount":312764},"requests":{"average":31208,"mean":31208,"stddev":1336.19,"min":27928,"max":32252,"total":312764,"p0_001":27935,"p0_01":27935,"p0_1":27935,"p1":27935,"p2_5":27935,"p10":27935,"p25":31535,"p50":31855,"p75":31951,"p90":32255,"p97_5":32255,"p99":32255,"p99_9":32255,"p99_99":32255,"p99_999":32255,"sent":312764},"throughput":{"average":0,"mean":0,"stddev":0,"min":0,"max":0,"total":0,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":0,"p99_999":0},"file":"cqn4sql/performance-benchmarks.test.js","line":"13:42"}}
+{"cqn4sql/performance-benchmarks.test.js:expand simple":{"title":"expand simple","connections":3,"duration":10.000898542,"samples":10,"start":"+016151-02-13T00:22:29.458Z","finish":"2025-10-07T11:15:30.919Z","errors":0,"timeouts":0,"mismatches":0,"non2xx":0,"resets":0,"1xx":0,"2xx":195206,"3xx":0,"4xx":0,"5xx":0,"statusCodeStats":{"200":{"count":195206}},"latency":{"average":0.01,"mean":0.01,"stddev":0.03,"min":1,"max":3,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":2,"p99_999":2,"totalCount":195206},"requests":{"average":19501.34,"mean":19501.34,"stddev":478.1,"min":18292,"max":19943,"total":195206,"p0_001":18303,"p0_01":18303,"p0_1":18303,"p1":18303,"p2_5":18303,"p10":18303,"p25":19391,"p50":19679,"p75":19807,"p90":19951,"p97_5":19951,"p99":19951,"p99_9":19951,"p99_99":19951,"p99_999":19951,"sent":195206},"throughput":{"average":0,"mean":0,"stddev":0,"min":0,"max":0,"total":0,"p0_001":0,"p0_01":0,"p0_1":0,"p1":0,"p2_5":0,"p10":0,"p25":0,"p50":0,"p75":0,"p90":0,"p97_5":0,"p99":0,"p99_9":0,"p99_99":0,"p99_999":0},"file":"cqn4sql/performance-benchmarks.test.js","line":"13:42"}}
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