Question 1

How do I connect to a PostgreSQL database using postgresql-dart in Dart?

Accepted Answer

Create a PostgreSQLConnection instance with host, port, database name, username, and password, then call open(). For example: var connection = PostgreSQLConnection('localhost', 5432, 'mydb', username: 'user', password: 'pass'); await connection.open(); This establishes a connection using the extended query format for efficient communication.

Question 2

What are the performance benefits of using postgresql-dart over other drivers?

Accepted Answer

postgresql-dart leverages PostgreSQL's native extended query format and binary protocol, which reduces network round trips and data serialization overhead. This results in faster query execution and enhanced security compared to drivers using simpler protocols.

Question 3

postgresql-dart vs mysql1: which should I use for my Dart project?

Accepted Answer

Choose postgresql-dart if you're specifically using PostgreSQL for features like JSONB or advanced protocols. mysql1 is for MySQL databases, so the choice depends on your database backend; postgresql-dart offers better integration with PostgreSQL-specific optimizations.

Question 4

How to handle transactions in postgresql-dart?

Accepted Answer

Use the transaction method on the connection with a callback that executes queries within the transaction. For example: await connection.transaction((ctx) async { await ctx.query('INSERT ...'); }); This ensures all queries are committed or rolled back together, maintaining data consistency.

Question 5

Does postgresql-dart support connection pooling?

Accepted Answer

No, postgresql-dart does not have built-in connection pooling. You need to manage connections manually or integrate external libraries, which can add complexity to your application's architecture and setup.

Question 6

How to map query results to Dart objects with postgresql-dart?

Accepted Answer

Use the mappedResultsQuery method to retrieve results as maps with table and column names. Then, manually map these to Dart objects by iterating through the list, such as creating classes from the nested map structures for easier data handling.

Postgres

What is Postgres?

Overview

Use Cases

Best For

Related Projects

Found a gem we're missing?

Not Ideal For

Pros & Cons

Pros

Cons

Frequently Asked Questions