Questions tagged [mysql]
MySQL is an open-source, relational database management system.
531 questions
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Best Practices for Implementing a Heartbeat Feature in a Laravel App to Track Offline Status
I'm trying to implement a heartbeat feature for offline tracking that just sends an offline message to the server once the web browser app (Laravel-based) is offline. Ideally it will ping the app's ...
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Should I break a large user table into smaller tables for specific roles and information?
I am designing a database for a system that has a users table. Currently, the table has around 50 columns, which include:
Personal information (e.g. name, email, phone_number, address, etc.)
Work-...
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.Net 8 XUnit: How to mock MySql in a CQRS API using integration tests?
This is a rewrite of my own
.Net 8 XUnit: Should my tests use real data or how to mock MySql with CQRS?
in a much more clear way:
The reason for rewriting my previous question is because in the ...
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.Net 8 XUnit: Should my tests use real data or how to mock MySql with CQRS?
I'm creating tests for our .Net 8 API. We use MySql for data storage and CQRS pattern for queries.
In my personal opinion, I shouldn't use the real database for testing, because you will use an ...
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Linking records through multiple tables?
I'm writing a game server. Similar to the Sims. Players can own furniture items they purchase from the catalog. There can also be rooms. Players can be in a room. A room can have furniture items of ...
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Designing a flexible and comprehensive restaurant menu database schema?
I am working on developing a MySQL database schema for a restaurant menu system inspired by platforms like DoorDash, UberEats, and Yelp. My aim is to design a schema that is flexible and can handle ...
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Our php codes base has 6 different ways to do INSERT ... ON DUPLICATE KEY UPDATE, how do I fix it?
Our php codes base has 6 different ways to do INSERT ... ON DUPLICATE KEY UPDATE. It happened over years because the php framework is evolving and my team members come and go, although I won't say we ...
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Best Practices for Storing Operational Hours Extending Past Midnight in MySQL
I'm building a PHP application to manage business operating hours, including cases where the closing time extends past midnight. I'm considering various ways to store these hours in MySQL and need ...
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Is it reliable to process millions of records with INSERT INTO SELECT directly in the database?
I have several million booking rows in a table and would now like to save the totals of the booking amounts in another table depending on the customer, account no., product, etc.
Should this ...
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Designing a database schema for a website related to my town's history
I am working on digitizing old photographs, articles, ephemera, etc. related to my town's history, and I've been tasked to put these scans I've made onto a website for the public to see. There are ...
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Do we have 2 logical query processings, one with indexes and one without indexes?
In the book "Inside Microsoft® SQL Server® 2008: T-SQL Programming" the behaviour of a sql query is explained. The following picture is taken from the book. I have some questions about the ...
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How to handle time differences in MySQL
I'm facing a problem with handling different timezones in MySQL. I have looked into similar questions that were previously raised, but I couldn't find a proper answer.
The issue I'm encountering is as ...
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How to reliably determine changes in a DB table since some sort of "checkpoint"?
My scenario is fairly typical, but I can't figure out a good solution. I have a DB table (in reality several unrelated tables, but let's focus on one) where there is a fair deal of activity going on. ...
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Is it a good practice to have two unique IDs for an SQL-Database?
Currently I want to create a SQL database effectively and "logically". Lately I read a lot about the issues that it is (mostly) not a good idea to define primary keys that can be seen from &...
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Can it be acceptable to construct SQL queries dynamically?
I know that as a general rule, you shouldn't construct SQL queries dynamically because of the possibility of SQL injection.
However, it could come in quite handy to break this rule and define for ...