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https://github.com/Giorgi/DuckDB.NET
Bindings and ADO.NET Provider for DuckDB
https://github.com/Giorgi/DuckDB.NET
ado-net data-science duckdb duckdb-database hacktoberfest hacktoberfest2023
Last synced: about 1 month ago
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Bindings and ADO.NET Provider for DuckDB
- Host: GitHub
- URL: https://github.com/Giorgi/DuckDB.NET
- Owner: Giorgi
- License: mit
- Created: 2020-10-10T20:14:15.000Z (almost 4 years ago)
- Default Branch: develop
- Last Pushed: 2024-05-01T09:09:05.000Z (4 months ago)
- Last Synced: 2024-05-01T21:19:23.594Z (4 months ago)
- Topics: ado-net, data-science, duckdb, duckdb-database, hacktoberfest, hacktoberfest2023
- Language: C#
- Homepage: https://duckdb.net
- Size: 5.17 MB
- Stars: 277
- Watchers: 11
- Forks: 53
- Open Issues: 10
-
Metadata Files:
- Readme: README.md
- Funding: .github/FUNDING.yml
- License: LICENSE-DuckDB.txt
- Code of conduct: CODE_OF_CONDUCT.md
Awesome Lists containing this project
- awesome-dotnet - DuckDB.NET - .NET data provider for DuckDB (Database Drivers)
README
# DuckDB.NET
[DuckDB](https://duckdb.org/) bindings for C#
[](https://github.com/Giorgi/DuckDB.NET/actions/workflows/ci.yml)
[](https://coveralls.io/github/Giorgi/DuckDB.NET)
[](LICENSE.md)
[](https://ko-fi.com/U6U81LHU8)
[](https://discord.com/channels/909674491309850675/1051088721996427265)
[](https://www.nuget.org/packages/DuckDB.NET.Data/)
[](https://www.nuget.org/packages/DuckDB.NET.Bindings/)
[](https://www.nuget.org/packages/DuckDB.NET.Data.Full/)
[](https://www.nuget.org/packages/DuckDB.NET.Bindings.Full/)
## Usage
```sh
dotnet add package DuckDB.NET.Data.Full
```
```cs
using (var duckDBConnection = new DuckDBConnection("Data Source=file.db"))
{
duckDBConnection.Open();
using var command = duckDBConnection.CreateCommand();
command.CommandText = "CREATE TABLE integers(foo INTEGER, bar INTEGER);";
var executeNonQuery = command.ExecuteNonQuery();
command.CommandText = "INSERT INTO integers VALUES (3, 4), (5, 6), (7, 8);";
executeNonQuery = command.ExecuteNonQuery();
command.CommandText = "Select count(*) from integers";
var executeScalar = command.ExecuteScalar();
command.CommandText = "SELECT foo, bar FROM integers";
var reader = command.ExecuteReader();
PrintQueryResults(reader);
}
private static void PrintQueryResults(DbDataReader queryResult)
{
for (var index = 0; index < queryResult.FieldCount; index++)
{
var column = queryResult.GetName(index);
Console.Write($"{column} ");
}
Console.WriteLine();
while (queryResult.Read())
{
for (int ordinal = 0; ordinal < queryResult.FieldCount; ordinal++)
{
var val = queryResult.GetInt32(ordinal);
Console.Write(val);
Console.Write(" ");
}
Console.WriteLine();
}
}
```
## Known Issues
When debugging your project that uses DuckDB.NET library, you may get the following error: **System.AccessViolationException: Attempted to read or write protected memory. This is often an indication that other memory is corrupt**. The error happens due to debugger interaction with the native memory. For a workaround check out [Debugger Options mess up debugging session during Marshalling
](https://youtrack.jetbrains.com/issue/RIDER-114126/Debugger-Options-mess-up-debugging-session-during-Marshalling)
## Documentation
Documentation is available at [https://duckdb.net](https://duckdb.net)
## Support
If you encounter a bug with the library [Create an Issue](https://github.com/Giorgi/DuckDB.NET/issues/new). Join the [DuckDB `dotnet` channel](https://discord.duckdb.org/) for DuckDB.NET-related topics.
## Contributors
[](https://github.com/Giorgi/DuckDB.NET/graphs/contributors)
## Sponsors
A big thanks to the [AWS Open Source Software Fund](https://github.com/aws/dotnet-foss) for sponsoring the project!
[](https://github.com/aws/dotnet-foss)