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deno-postgres
PostgreSQL driver for Deno.
It’s still work in progress, but you can take it for a test drive!
deno-postgres
is being developed based on excellent work of node-postgres
and pq.
To Do:
- connecting to database
- password handling -
cleartext, MD5 - DSN style connection parameters
- reading connection parameters from environmental variables
- termination of connection
- simple queries (no arguments)
- parsing Postgres data types to native TS types
- row description
- parametrized queries
- connection pooling
- parsing error response
- SSL
- tests, tests, tests
Example
import { Client } from "https://deno.land/x/postgres/mod.ts";
async function main() {
const client = new Client({
user: "user",
database: "test",
host: "localhost",
port: "5432"
});
await client.connect();
const result = await client.query("SELECT * FROM people;");
console.log(result.rows);
await client.end();
}
main();
API
deno-postgres
follows node-postgres
API to make transition for Node devs as easy as possible.
Connecting to DB
If any of parameters is missing it is read from environmental variable.
import { Client } from "https://deno.land/x/postgres/mod.ts";
let config;
config = {
host: "localhost",
port: "5432",
user: "user",
database: "test",
application_name: "my_custom_app"
};
// alternatively
config = "postgres://user@localhost:5432/test?application_name=my_custom_app";
const client = new Client(config);
await client.connect();
await client.end();
Queries
Simple query
const result = await client.query("SELECT * FROM people;");
console.log(result.rows);
Parametrized query
const result = await client.query(
"SELECT * FROM people WHERE age > $1 AND age < $2;",
10,
20
);
console.log(result.rows);
// equivalent using QueryConfig interface
const result = await client.query({
text: "SELECT * FROM people WHERE age > $1 AND age < $2;",
args: [10, 20]
});
console.log(result.rows);
License
There are substantial parts of this library based on other libraries. They have preserved their individual licenses and copyrights.
Eveything is licensed under the MIT License.
All additional work is copyright 2018 - 2019 — Bartłomiej Iwańczuk — All rights reserved.