https://github.com/stablekernel/postgresql-dart

Dart PostgreSQL driver: supports extended query format, binary protocol and statement reuse.
https://github.com/stablekernel/postgresql-dart

dart driver postgresql

Last synced: about 1 month ago
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Dart PostgreSQL driver: supports extended query format, binary protocol and statement reuse.

• Host: GitHub
• URL: https://github.com/stablekernel/postgresql-dart
• Owner: stablekernel
• License: bsd-3-clause
• Created: 2016-09-01T00:47:57.000Z (about 8 years ago)
• Default Branch: master
• Last Pushed: 2022-09-06T20:25:26.000Z (about 2 years ago)
• Last Synced: 2024-05-02T23:44:40.339Z (4 months ago)
• Topics: dart, driver, postgresql
• Language: Dart
• Homepage: https://www.dartdocs.org/documentation/postgres/latest
• Size: 305 KB
• Stars: 130
• Watchers: 9
• Forks: 35
• Open Issues: 40
• Metadata Files:
  • Readme: README.md
  • Changelog: CHANGELOG.md
  • License: LICENSE

Awesome Lists containing this project

• awesome-pubdev - postgres - PostgreSQL database driver. Supports statement reuse and binary protocol. (Database)
• awesome-dart - Postgres - A PostgreSQL database driver that uses the extended, binary protocol for more efficient and secure queries. (Database)

README

        
# postgres

[![Build Status](https://travis-ci.org/stablekernel/postgresql-dart.svg?branch=master)](https://travis-ci.org/stablekernel/postgresql-dart) [![codecov](https://codecov.io/gh/stablekernel/postgresql-dart/branch/master/graph/badge.svg)](https://codecov.io/gh/stablekernel/postgresql-dart)

A library for connecting to and querying PostgreSQL databases.

This driver uses the more efficient and secure extended query format of the PostgreSQL protocol.

## Usage

Create `PostgreSQLConnection`s and `open` them:

```dart

var connection = PostgreSQLConnection("localhost", 5432, "dart_test", username: "dart", password: "dart");

await connection.open();

```

Execute queries with `query`:

```dart

List> results = await connection.query("SELECT a, b FROM table WHERE a = @aValue", substitutionValues: {

    "aValue" : 3

});

for (final row in results) {

  var a = row[0];

  var b = row[1];

} 

```

Return rows as maps containing table and column names:

```dart

List>> results = await connection.mappedResultsQuery(

  "SELECT t.id, t.name, u.name FROM t LEFT OUTER JOIN u ON t.id=u.t_id");

for (final row in results) {

  var tID = row["t"]["id"];

  var tName = row["t"]["name"];

  var uName = row["u"]["name"];

}

```

Execute queries in a transaction:

```dart

await connection.transaction((ctx) async {

    var result = await ctx.query("SELECT id FROM table");

    await ctx.query("INSERT INTO table (id) VALUES (@a:int4)", substitutionValues: {

        "a" : result.last[0] + 1

    });

});

```

See the API documentation: https://pub.dev/documentation/postgres/latest/

## Features and bugs

Please file feature requests and bugs at the [issue tracker][tracker].

[tracker]: https://github.com/stablekernel/postgresql-dart/issues