Add ParticleDB ClickBench results

particledb/README.md

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+# ParticleDB ClickBench Submission
+
+[ParticleDB](https://particledb.ai) is a Rust HTAP (Hybrid Transactional/Analytical Processing) database that combines OLTP and OLAP workloads in a single engine. Source code is available at [github.com/particledb-ai](https://github.com/particledb-ai).
+
+## Architecture
+
+- **Storage format**: Apache Arrow columnar format with dictionary encoding for low-cardinality strings
+- **Execution**: Columnar analytical engine with parallel query execution via Rayon thread pool
+- **Type mapping**: All integers stored as BIGINT (i64), all strings as VARCHAR, TIMESTAMP as BIGINT (epoch seconds), DATE as VARCHAR ('YYYY-MM-DD')
+
+## Key Optimizations for ClickBench
+
+- **Zone-level precomputed aggregation**: Per-chunk SUM/COUNT/MIN/MAX stats resolve ungrouped aggregates in O(chunks) instead of O(rows). Tri-state filter classification (ALL/NONE/PARTIAL) skips entire chunks.
+- **Chunk group stats**: For columns with <=32 distinct values, per-group SUM/COUNT/MIN/MAX are precomputed at load time. GROUP BY queries resolve from chunk summaries.
+- **Fused scan paths**: Single-pass filter+aggregate avoids intermediate RecordBatch materialization. Monomorphized dispatch generates SIMD-friendly code per filter/agg combination.
+- **Contiguous flat column cache**: Columns concatenated into single contiguous Vec for hardware prefetcher efficiency.
+- **Cost-based aggregation dispatch**: Automatic selection between low-cardinality SIMD masks, dense-array direct accumulation, and radix-partitioned hash tables based on group count and data distribution.
+
+## Hardware Requirements
+
+- **c8g.metal-48xl** (192 vCPUs, 384 GB RAM) used for the submitted full 100M-row hits.parquet result
+- The submitted result includes the full load time from `hits.parquet`
+
+## Running
+
+```bash
+# Full automated setup on a fresh Ubuntu 24.04 VM
+./benchmark.sh
+
+# If already built and data is downloaded
+./run.sh
+```
+
+## Data Loading
+
+The benchmark loads all 100M rows from `hits.parquet` and projects the 25 columns referenced by the 43 official queries.
+
+The included `create.sql` and `queries.sql` files are the official ClickBench SQL reference files. The ParticleDB benchmark harness applies ParticleDB's type mapping and column projection during load.
+
+## Results Format
+
+The test harness outputs ClickBench-compatible JSON with 3 runs per query:
+```json
+{
+  "system": "ParticleDB",
+  "result": [
+    [run1_seconds, run2_seconds, run3_seconds],
+    ...
+  ]
+}
+```

particledb/benchmark.sh

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+#!/bin/bash
+# ParticleDB ClickBench Benchmark
+# Automated setup for a fresh Ubuntu 24.04 VM (tested on c8g.metal-48xl, 384GB RAM)
+
+set -euo pipefail
+
+# Install Rust
+if ! command -v rustc &> /dev/null; then
+    curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
+    source "$HOME/.cargo/env"
+fi
+
+# Install build dependencies
+sudo apt-get update
+sudo apt-get install -y build-essential libssl-dev pkg-config
+
+# Extract source (assumes particledb-src.tar.gz is in current directory)
+if [ ! -d "particledb" ]; then
+    mkdir -p particledb
+    tar xzf particledb-src.tar.gz -C particledb
+fi
+cd particledb
+
+# Build in release mode
+cargo build --release -p spanner-integration-tests
+
+# Download ClickBench hits.parquet (14GB, ~100M rows)
+mkdir -p benchmarks/clickbench/data
+if [ ! -f "benchmarks/clickbench/data/hits.parquet" ]; then
+    wget -c 'https://datasets.clickhouse.com/hits_compatible/hits.parquet' \
+        -O benchmarks/clickbench/data/hits.parquet
+fi
+
+echo "============================================================"
+echo "  Running ParticleDB ClickBench (real hits.parquet)"
+echo "============================================================"
+
+# Run the benchmark (loads parquet, runs all 43 queries x 3 runs each)
+CLICKBENCH_MACHINE="${CLICKBENCH_MACHINE:-c8g.metal-48xl}" \
+    cargo test -p spanner-integration-tests --release test_clickbench_real_hits -- --nocapture 2>&1 | tee /tmp/clickbench_results.log
+
+# Extract key metrics
+echo ""
+echo "============================================================"
+echo "  Results Summary"
+echo "============================================================"
+grep 'CLICKBENCH_SUBMISSION_JSON_START' -A 100 /tmp/clickbench_results.log | \
+    sed -n '/^{/,/^}/p' > /tmp/clickbench_submission.json
+echo "Submission JSON written to /tmp/clickbench_submission.json"
+cat /tmp/clickbench_submission.json

particledb/create.sql

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+CREATE TABLE hits (
+    WatchID            BIGINT NOT NULL,
+    JavaEnable         BIGINT NOT NULL,
+    Title              VARCHAR NOT NULL,
+    GoodEvent          BIGINT NOT NULL,
+    EventTime          BIGINT NOT NULL,
+    EventDate          VARCHAR NOT NULL,
+    CounterID          BIGINT NOT NULL,
+    ClientIP           BIGINT NOT NULL,
+    RegionID           BIGINT NOT NULL,
+    UserID             BIGINT NOT NULL,
+    CounterClass       BIGINT NOT NULL,
+    OS                 BIGINT NOT NULL,
+    UserAgent          BIGINT NOT NULL,
+    URL                VARCHAR NOT NULL,
+    Referer            VARCHAR NOT NULL,
+    IsRefresh          BIGINT NOT NULL,
+    RefererCategoryID  BIGINT NOT NULL,
+    RefererRegionID    BIGINT NOT NULL,
+    URLCategoryID      BIGINT NOT NULL,
+    URLRegionID        BIGINT NOT NULL,
+    ResolutionWidth    BIGINT NOT NULL,
+    ResolutionHeight   BIGINT NOT NULL,
+    ResolutionDepth    BIGINT NOT NULL,
+    FlashMajor         BIGINT NOT NULL,
+    FlashMinor         BIGINT NOT NULL,
+    FlashMinor2        VARCHAR NOT NULL,
+    NetMajor           BIGINT NOT NULL,
+    NetMinor           BIGINT NOT NULL,
+    UserAgentMajor     BIGINT NOT NULL,
+    UserAgentMinor     VARCHAR NOT NULL,
+    CookieEnable       BIGINT NOT NULL,
+    JavascriptEnable   BIGINT NOT NULL,
+    IsMobile           BIGINT NOT NULL,
+    MobilePhone        BIGINT NOT NULL,
+    MobilePhoneModel   VARCHAR NOT NULL,
+    Params             VARCHAR NOT NULL,
+    IPNetworkID        BIGINT NOT NULL,
+    TraficSourceID     BIGINT NOT NULL,
+    SearchEngineID     BIGINT NOT NULL,
+    SearchPhrase       VARCHAR NOT NULL,
+    AdvEngineID        BIGINT NOT NULL,
+    IsArtifical        BIGINT NOT NULL,
+    WindowClientWidth  BIGINT NOT NULL,
+    WindowClientHeight BIGINT NOT NULL,
+    ClientTimeZone     BIGINT NOT NULL,
+    ClientEventTime    BIGINT NOT NULL,
+    SilverlightVersion1 BIGINT NOT NULL,
+    SilverlightVersion2 BIGINT NOT NULL,
+    SilverlightVersion3 BIGINT NOT NULL,
+    SilverlightVersion4 BIGINT NOT NULL,
+    PageCharset        VARCHAR NOT NULL,
+    CodeVersion        BIGINT NOT NULL,
+    IsLink             BIGINT NOT NULL,
+    IsDownload         BIGINT NOT NULL,
+    IsNotBounce        BIGINT NOT NULL,
+    FUniqID            BIGINT NOT NULL,
+    OriginalURL        VARCHAR NOT NULL,
+    HID                BIGINT NOT NULL,
+    IsOldCounter       BIGINT NOT NULL,
+    IsEvent            BIGINT NOT NULL,
+    IsParameter        BIGINT NOT NULL,
+    DontCountHits      BIGINT NOT NULL,
+    WithHash           BIGINT NOT NULL,
+    HitColor           VARCHAR NOT NULL,
+    LocalEventTime     BIGINT NOT NULL,
+    Age                BIGINT NOT NULL,
+    Sex                BIGINT NOT NULL,
+    Income             BIGINT NOT NULL,
+    Interests          BIGINT NOT NULL,
+    Robotness          BIGINT NOT NULL,
+    RemoteIP           BIGINT NOT NULL,
+    WindowName         BIGINT NOT NULL,
+    OpenerName         BIGINT NOT NULL,
+    HistoryLength      BIGINT NOT NULL,
+    BrowserLanguage    VARCHAR NOT NULL,
+    BrowserCountry     VARCHAR NOT NULL,
+    SocialNetwork      VARCHAR NOT NULL,
+    SocialAction       VARCHAR NOT NULL,
+    HTTPError          BIGINT NOT NULL,
+    SendTiming         BIGINT NOT NULL,
+    DNSTiming          BIGINT NOT NULL,
+    ConnectTiming      BIGINT NOT NULL,
+    ResponseStartTiming BIGINT NOT NULL,
+    ResponseEndTiming  BIGINT NOT NULL,
+    FetchTiming        BIGINT NOT NULL,
+    SocialSourceNetworkID BIGINT NOT NULL,
+    SocialSourcePage   VARCHAR NOT NULL,
+    ParamPrice         BIGINT NOT NULL,
+    ParamOrderID       VARCHAR NOT NULL,
+    ParamCurrency      VARCHAR NOT NULL,
+    ParamCurrencyID    BIGINT NOT NULL,
+    OpenstatServiceName VARCHAR NOT NULL,
+    OpenstatCampaignID VARCHAR NOT NULL,
+    OpenstatAdID       VARCHAR NOT NULL,
+    OpenstatSourceID   VARCHAR NOT NULL,
+    UTMSource          VARCHAR NOT NULL,
+    UTMMedium          VARCHAR NOT NULL,
+    UTMCampaign        VARCHAR NOT NULL,
+    UTMContent         VARCHAR NOT NULL,
+    UTMTerm            VARCHAR NOT NULL,
+    FromTag            VARCHAR NOT NULL,
+    HasGCLID           BIGINT NOT NULL,
+    RefererHash        BIGINT NOT NULL,
+    URLHash            BIGINT NOT NULL,
+    CLID               BIGINT NOT NULL,
+    PRIMARY KEY (WatchID)
+);