malloy-tpcds

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Translations of the TPC-DS benchmark queries from SQL to Malloy

malloy-tpcds 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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Implementation of TPC-DS data warehouse benchmark queries using the Malloy query language. Follow along with the adventure [here](https://carlineng.github.io/malloy-tpcds/).

TPC-DS queries are run using DuckDB:
- https://duckdb.org/

Queries are taken from DuckDB's `extensions` directory:
- https://github.com/duckdb/duckdb/tree/45d857191be915d3a38c83b75a42a945ba04fe9d/extension/tpcds/dsdgen/queries

Data is from Altinity's TPC-DS repository:
- https://github.com/Altinity/tpc-ds/tree/master/data

To get started:
- Get data from the Altinity repo linked above
- Unzip the archive in the `data/` subfolder. You'll need to concatenate the split data archive using a command like:

```
cat *.zip.00* > data.zip
unzip data.zip
```

Also note that DuckDB didn't like the input for `customer_001.dat` table due to non-utf8 characters.
To strip non-utf8 characters, run:

```
iconv -f utf-8 -t utf-8 -c customer_001.dat > customer_001.dat.utf8
mv customer_001.dat.utf8 customer_001.dat
```

- Open DuckDB shell, load the TPC-DS schema into duckdb:

```
.read tpcds_schema.sql
```

- Import data into DuckDB

```
.read load.sql
```

- Export files to Parquet

```
.read export.sql
```

- Optional: run `EXPORT DATABASE 'data/duckdb'` to export the full DB for easier use next time
- Optional: next time you open DuckDB, you can simply run `IMPORT DATABASE 'data/duckdb'`

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