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sqlite-parquet-vtable
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Colin Dellow 2018-03-25 00:07:56 -04:00
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README.md
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@ -2,22 +2,9 @@
A SQLite [virtual table](https://sqlite.org/vtab.html) extension to expose Parquet files as SQL tables. A SQLite [virtual table](https://sqlite.org/vtab.html) extension to expose Parquet files as SQL tables.
## Building ## Download
1. Install [`parquet-cpp`](https://github.com/apache/parquet-cpp) You can fetch a version built for Ubuntu 16.04 at https://s3.amazonaws.com/cldellow/public/libparquet/libparquet.so.xz
1. Master appears to be broken for text row group stats; see https://github.com/cldellow/sqlite-parquet-vtable/issues/5 for which versions to use
2. Run `./build-sqlite` to fetch and build the SQLite dev bits
3. Run `./parquet/make` to build the module
1. You will need to fixup the paths in this file to point at your local parquet-cpp folder.
## Tests
Run:
```
tests/create-queries-from-templates
tests/test-all
```
## Use ## Use
@ -100,3 +87,26 @@ These are not currently supported:
* UINT8/UINT16/UINT32/UINT64 * UINT8/UINT16/UINT32/UINT64
* DECIMAL * DECIMAL
## Building
If you're a masochist, you can try to build this yourself:
1. Install [`parquet-cpp`](https://github.com/apache/parquet-cpp)
1. Master appears to be broken for text row group stats; see https://github.com/cldellow/sqlite-parquet-vtable/issues/5 for which versions to use
2. Run `./build-sqlite` to fetch and build the SQLite dev bits
3. Run `./parquet/make` to build the module
1. You will need to fixup the paths in this file to point at your local parquet-cpp folder.
You're almost certainly going to regret your life. https://stackoverflow.com/questions/48157198/how-can-i-statically-link-arrow-when-building-parquet-cpp may be useful.
## Tests
Run:
```
tests/create-queries-from-templates
tests/test-all
```