A library for connecting to and querying PostgreSQL databases.
This driver uses the more efficient and secure extended query format of the PostgreSQL protocol.
Create PostgreSQLConnections and open them:
var connection = PostgreSQLConnection("localhost", 5432, "dart_test", username: "dart", password: "dart");
await connection.open();Execute queries with query:
List<List<dynamic>> 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:
List<Map<String, Map<String, dynamic>>> 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:
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/
Please file feature requests and bugs at the issue tracker.