Here is the code example: app.js const express = require("express"); const app = express(); const cors = require("cors"); require("dotenv").config({ path: "./config.env" }); const port = process.env.PORT || 5000; app.use(cors()); app.use(express.json()); app.use(require("./routes/record")); // get driver connection const dbo = require("./db/conn"); app.listen(port,…
I'm looking to improve the query performance of the following mysql query: SELECT * FROM items WHERE items.createdAt > ? AND items.createdAt + items.duration < ? What are the best indexes to use here? Should I have one for both…
i have json server fake data in my react app and here is my data: {"quotes": [ { "id": 1, "quote": "Javascript is my life", "author": "ali pasha", "comments": [], }, { "id": 2, "quote": "Learning react is very fun",…
the screenshot of MySQL exportMySQL tables do not show when trying to export my schema... I can see those tables in my schema, etc but not when trying to export. What could be wrong? I am using MySQL Workbench on…
I'm trying to retrieve data from database and display all the data using foreachloop. Im getting first row data easily without foreach loop but whenever I try using loop the error displays "foreach() argument must be of type array|object, string…
I have a users table and a column supervised_by where I want the id of the user who created the new user. For example: get the id of the admin in supervised_by column of the user the admin creates. users…
I have two tables I need to join these table and there is a possibility that joined table might return duplicate rows but there is column updated date which will be unique so I need to fetch record from these…
I have a question: we have a table that has (among other stuff) a couple of IP/port pairs that I would like to be globally unique to avoid crosstalk in streaming binaries that use this configuration. Assume a table as…
I want to do a to do list app. I use Sqflite in my project. Widget ` return FutureBuilder( future: databaseTrans.getTables(), builder: (context, snapshot) { if (snapshot.data == null) { return taskBookErrorWidget(context); } else { return GridView.count( crossAxisCount: 3, children:…
Description So, I'm working on a project that stores sensor measurements from multiple devices in PostgreSQL+TimescaleDB database. The structure of the table (hypertable): column_name type comment identifier text device identifier key text name of the metric value_num double precision numeric…