How to sync 2x AWS RDS instances
I have 2x RDS single instances (MySQL) in the same region. The goal is to copy (A) RDS to (B) RDS on nightly basis. Is there any way to have this configuration auto sync between 2 RDS instances?
Failed to add the foreign key constraint in MySQL: error 3780
I am getting the error: Error Code: 3780. Referencing column 'category' and referenced column 'category_id' in foreign key constraint 'product_ibfk_1' are incompatible. drop table if exists Provider; drop table if exists Category; drop table if exists Product; create table Provider…
Mysql – How to find combinations of columns 1 and 2 that do not exist in an SQL table?
Suppose the table is: employee_id branch role 1 A admin 2 A engineer 3 A finance 4 B admin 5 B finance 6 C engineer How can I find the departments that do not have all the roles? In this…
Cumulative Sum of Repayments to calculate outstanding as on date in MySQL
I have a repayment table that looks like this below, cus_id due_date principal disbursed_date 1 01-01-2022 10 01-11-2021 1 01-02-2022 10 01-11-2021 1 01-03-2022 10 01-11-2021 2 15-03-2022 20 15-02-2022 1 01-04-2022 10 01-11-2021 3 01-04-2022 15 20-03-2022 2 15-04-2022…
Trying to find a keyword in all columns of a MySQL table
I have been having issues with a query that I am creating to search for books in a system, I am searching for a keyword in all columns in a table. It could be anything and I need it to…
Mysql – How to Display an Error Message with a button
So I currently have this code that asks the user if they want to delete a record from the database via ReactJS methods: { async deleteStatus(id) { try { if (window.confirm("Do you really want to delete?")){ await axios.delete(`http://localhost:5000/delete-status/${id}`); } window.location.reload();…
Possible to do a MYSQL UPDATE query but not actually update a column? – PHP
Is it possible to do an UPDATE query but not actually update a value and leave it alone? I would like to have queries like this: UPDATE homes SET age = 25, SET name = (don’t update) WHERE id =…
Mysql – Node.JS – SQL Injection in URL parameters?
I'm trying to learn Node.js and I'm currently making an Express app (using ejs) that will return values from a MySQL database, depending on the URL the user visits. For example, visiting http://localhost:3000/test will list all users from the db…
Mysql – How do I print a value without any brackets or commas or parenthesis?
I want to print out only the value without any brackets or commas or parenthesis. I am using MySQL with python with mysql.connector. When I run this code I get "('esrvgf',)". But I want to just get "esrvg". import mysql.connector…
Cannot use "storage account" and "file share" that I have created, while doing "docker compose up"
I have been following all of the tutorials for using docker compose with regards to azure and have been running into a problem with regards to volumes. My docker compose file looks like this : version: '3.7' services: app-server: build:…