pg-promise | PostgreSQL interface for Node.js | Runtime Evironment library
kandi X-RAY | pg-promise Summary
kandi X-RAY | pg-promise Summary
Built on top of [node-postgres], this library adds the following:. At its inception in 2015, this library was only adding promises to the base driver, hence the name pg-promise. And while the original name was kept, the library’s functionality was vastly extended, with promises now being only its tiny part.
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Top functions reviewed by kandi - BETA
- Create a new Database connection
- Extend the query .
- Execute a query
- Main entry point .
- Task context object .
- Promise initialization method
- Update an update .
- Format a JS type
- Connect to the pool .
- Insert a column into the table .
pg-promise Key Features
pg-promise Examples and Code Snippets
License : Strong Copyleft (CC BY-SA 4.0)
Copyconst Promise = require('bluebird'); // overload for the default Promise
Promise.config({
longStackTraces: true // enable long-stack tracing
});
const pgp = require('pg-promise')({
promiseLib: Promise // use custom promise librar'use strict';
/* hidden for brevity */
// pg-promise initialization options:
const initOptions = {
promiseLib: promise,
extend(obj, dc) {
obj.roles = repos.Roles(obj, pgp);
obj.shells = repos.Shells(obj, pgp);
Community Discussions
Trending Discussions on pg-promise
QUESTION
I'd like to create tables on the db initialization stage which look like this:
...ANSWER
Answered 2022-Feb-17 at 15:58The real solution is to move migrations to a separate script and run it before the build.
QUESTION
Steps to reproduce:
Step 1. VSC, F1 to create an auto-gen Azure Function (AF).
Step 2. index.js, replace it with below following MS AF Js developer guide
...ANSWER
Answered 2022-Feb-09 at 03:53Here we put the call back request of PgTest() Function inside a Promise wrapper Promise( (resolve, reject) => { //callback function}). This wrapper allows you to call the pgTest function like a promise with .catch() methods. When the pgTest is called, it executes the request to the API and waits for either a resolve() or a reject() statement to execute. In the callback function, you simply pass the retrieved data into the resolve or reject methods. check here
The .catch is a wrapper function of a promise and can be used to catch any exception that happens within the .then/inside the block.
So, the return will be performed, and it will went out of the wrapper function. because the .catch wrapper function can handle every exception in the .Catch block
Refer here for more information
QUESTION
I have a PostgreSQL database with dblink extension. I can use dblink without issues from pgAdmin but not from my nodeJS code using pg-promise.
I have checked that I am on the correct schema and database.
Running SELECT * FROM pg_extension; from my code does return that dblink is installed. However running a query including dblink results in: error: function dblink(unknown, unknown) does not exist
Is there something I should do to make dblink work in this scenario?
This a basic example of my code:
...ANSWER
Answered 2022-Feb-03 at 17:50It looks like exactly what I get if dblink is installed in "public" but "public" is not in my search_path.
QUESTION
I have an Azure (AZ) Function does two things:
- validate submitted info involving 3rd party packages.
- when ok call a postgreSQL function at AZ to fetch a small set of data
Testing with Postman, this AF localhost response time < 40 ms. Deployed to Cloud, change URL to AZ, same set of data, took 30 seconds got Status: 500 Internal Server Error.
Did a search, thought this SO might be the case, that I need to bump my subscription to the expensive one to avoid cold start.
But more investigation running part 1 and 2 individually and combined, found:
- validation part alone runs perfect at AZ, response time < 40ms, just like local, suggests cold start/npm-installation is not an issue.
- pg function call always long and
status: 500regardless it runs alone or succeeding part 1, no data returned.
Application Insight is enabled and added a Diagnostic settings with:
- FunctionAppLogs and AllMetrics selected
- Send to LogAnalytiscs workspace and Stream to an event hub selected
Following queries found no error/exceptions:
...ANSWER
Answered 2022-Jan-24 at 19:50My AZ pgDB is a flexible server, current Networking is Public access (allowed IP address), and I have added some Firewall rule w/ client IP address. My assumption is access is allowed within AZ, but it's not.
Solution 1, simply check this box: Allow public access from any Azure servcie within Azure to this server at the bottom of the Settings -> Networking.
Solution 2, find out all AF's outbound IP and add them into Firewall rule, under Settings -> Networking. Reason to add them all is Azure select an outbound IP randomly.
QUESTION
Environment:
...ANSWER
Answered 2021-Dec-01 at 21:02Add the following line at the beginning of your pg_hba.conf:
QUESTION
I have a table of posts. I would like to query these posts as pages. Because I would like to keep my endpoints stateless I would like to do this with offset and limit like this:
...ANSWER
Answered 2021-Sep-02 at 22:37Well there is no built in process for this directly. But you can count the rows and add that to the results. You could then even give the user the number of items or number of pages:
QUESTION
So when I access the SvelteKit post endpoint it works fine if I submit some values and they don't pass validation checks. It returns the correct status and body. However when it makes the DB insert, the endpoint returns a 404 error but it inserts the user into the DB ok. I assume it is because the DB call is asynchronous And SvelteKit is not waiting for the result to return, but not sure how to change my code so it waits and sends the correct json response.
Thanks for any help!
...ANSWER
Answered 2021-Nov-03 at 06:33Your problem is that the DB you are using is implemented with a callback system function query(queryString, callback) and your await doesn't wait for it, nor is the return in the callback actually a return out of your endpoint.
The best thing to do is to check if your database library has an async method where you can do something like this or similar:
QUESTION
I am trying to get up and running with pg-promise, but it thinks my database table doesn't exist, and I am not sure why.
app.js
...ANSWER
Answered 2021-Oct-22 at 02:59That's because test and "Test" are 2 different table names.
Check camel-case + escaping SQL names in PostgreSQL ;)
QUESTION
pg-promise API recommends an initial connection object like:
...ANSWER
Answered 2021-Oct-02 at 13:03create variable for dynamic change TABLE or DATABASE
QUESTION
I have a table having an identity bigint cache 10
...ANSWER
Answered 2021-Sep-29 at 17:32In the Identity sequence parameters, you have instructed to use a CACHE 10, meaning that when calling the sequence, the next 10 values are fetched and put in memory. If the same connection calls the same sequence, a value from memory is returned... but if a different connection is used (like when using a pool), the next value is fetched from the sequence again (and again puts the next 10 in cache)
You can either live with it or use a cache of 1 (default)
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