Stack Exchange Network

Stack Exchange network consists of 175 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [mysql]

MySQL is an open-source, relational database management system. If your PHP code uses MySQLi, use the MySQLi tag instead.

-3
votes
0answers
12 views

Taking a long time to load [on hold]

I have a php file that's taking an extremely long time to load and when it is loaded it just return a blank page (still shows all CSS and stuff, but no outcome from the queries it was executing). I ...
1
vote
1answer
42 views

Elegant and secure way to create a dynamic query

I want to create a dynamic query to display: all the invoices if the user has moderator rank only his invoices if the user is a simple member code ...
0
votes
1answer
47 views

Register Script for a website [closed]

I'm still new in web development and I am trying to develop a website with free access to doctors listing with option of booking. This is a personal project that my local community can benefit. I ...
0
votes
1answer
47 views

Displaying a paginated list of forum topics using PHP PDO [closed]

Can someone tell me if this code is safe? Can be sql-injected or something else hacked? Code get some rows from db and show in pages with pagination... if i can improve let me know and show me how, ...
1
vote
0answers
11 views

Querying Aurora via Node.js

Function queries data from an Aurora database. Aurora database is the MySQL engine therefore, I'm querying it with a MySQL NPM module. If there is something better, I'm all ears. The calling function ...
2
votes
0answers
47 views

Make Pagination using Ajax with Jquery, PHP [closed]

This is the first time that I have add (I mean, I try) Ajax with Jquery to PHP and Mysql (pagination). This is a link to the test page: testpage1 I think everything works, but is it done correctly? ...
3
votes
1answer
47 views

Proper use of mysqli->close();

database.config.php ...
0
votes
0answers
5 views

Reviewing the Dockerfile and docker-compose.yml files for a basic nodejs mysql project

I'm new to docker and after much research and stufy I've created a sample application and would like it to be reviewed in case if I'm missing any corner or if there's redundant information that can be ...
4
votes
1answer
84 views

PHP Login Class - Security and Efficiency Check

I'm hoping someone would be able to identify if my code is prone to SQL injections, and just overall see if there is anything that could be done better, faster or more efficiently Im very new to OOP ...
2
votes
1answer
62 views

PDO library to handle MySQL queries

This is my library class. This does not have any issues but I want to know if I have any mistakes, or ways to improve performance: variable and call (example of ...
2
votes
1answer
50 views

Php registration form input is required validation

Ok, so I have been looking for resources on how to make a registration form work with input validation. I want the error message show up under the table of the registration form and not on top of the ...
5
votes
1answer
74 views

Lastest version of my Blackjack game

This is the latest version of my Blackjack game that uses a MySQL database to store user info. I did everything I was recommended in my previous post, added a ranking system and also fixed a bug where ...
1
vote
1answer
50 views

Search by parameters from multiple tables

I wrote a query that searches people based on search parameters from 3 other tables (phones, ...
0
votes
1answer
41 views

Saving row versions in MySQL [closed]

I just want to confirm that I am versioning my "versionable" fields correctly, and that there isn't another, better way to do this. I have a table event, a record ...
1
vote
0answers
22 views

performing SQL SELECT query inside the loop [closed]

I have a table leave_muster inside which I have to update all the records of the previous month on every start of the new month. My Code ...
0
votes
0answers
24 views

Ensuring referential integrity in child, group relationship

I'm not going to lie - Sql Server is not in the top 10 of my skill set, but it's something that I have to do from time to time. What's more, I'm using Entity Framework, so there is a workaround ...
2
votes
1answer
102 views

Create Apache2 virtualhost, Mysql db & user. CLI tool and GUI on top of it

Review for optimization, code standards, missed validation. What's in this version: Rewritten, instead of large complex script - few tools with each own task. Solid CLI tool and GUI script on top of ...
2
votes
1answer
97 views

PHP Mad Libs with OOP and SQL

I've been learning PHP and I've just gotten into using OOP. Classes/objects/methods etc. My end goal is to take an old Mad libs program I did with PHP, and convert it to OOP. The gist of the project ...
0
votes
0answers
15 views

Optimize slow SQL stored procedure that calculate Test Case failures in a non-optimal schema

I need to heavily optimize the following sql stored procedure (MySQL 5.6). Requirements: Should be as fast as possible (this is a key) Lots of records (10 M now, possibly more) Stored procedure ...
2
votes
1answer
62 views

Blackjack game with database - follow-up

This is a follow-up to my ex-posted Blackjack game that uses a MySQL database to store the accounts and user's money. I tried splitting display_info() a bit, I also ...
1
vote
0answers
29 views

Retrieving information about a vendor using MySQL

I am loading some information about the selected vendor using mysql query. I made a method with a List as return type, then created another method to assign values coming from a list. I am wondering ...
3
votes
1answer
78 views

Blackjack game with database

This is the latest version of my Blackjack game and I did a quite big update to it. Now you can make an account that is saved in the MySQL database and you can bet money that are also saved in the ...
4
votes
1answer
67 views

Registration and login script

This is a registration and login script I have made in Python 3. It uses a MySQL database. In the future I might use it with my Blackjack game and add a row called ...
3
votes
2answers
101 views

PHP Secure Login Scripts

I have created this login script for a website I'm making; basically I want to make it as secure as possible, but also I want it to keep users logged in for 30 minutes. For example if I've logged in ...
5
votes
2answers
132 views

Web scraper for football data with three very similar methods

Application Logic I wrote a web scraper that store some football data inside my database. Those data need to be update if 7 days are passed since the last update. I have three types of record: Team ...
1
vote
0answers
43 views

Writing SQL queries to retrieve data from given tables

Good day, I am a college student and lately we had an assignment where we were tasked to write SQL commands on various questions depending on the information that is needed to be displayed from 3 ...
5
votes
1answer
62 views

Non-Entity framework database interaction model

A C# WPF user interface has been developed for the Book Inventory MySQL database previously shown in this question. Since the database had already been developed this was a database first ...
2
votes
0answers
27 views

Insert data from one table to another (million+ rows)

I have a procedure that collects data from one table and inserts it into another table with the same columns, but after correlating with a few other tables. Since the existing table (from which data ...
1
vote
1answer
53 views

Optimize Multiple Insert SQLite Coming From MySQL

I'm currently developing an app that requires sending and receiving of data from android studio going to MySQL and then data coming from MySQL will be saved from the SQLite. I need advice on how to ...
3
votes
1answer
73 views

Sending and receiving of JSON data to and from Android Studio

I'm currently developing an app that requires sending and receiving of data from android studio going to MySQL and then data coming from MySQL will be saved from the SQLite. I need advice on how to ...
1
vote
0answers
48 views

Consumer Producer problem solution using JDBI, MySQL, HikariCP

The app suppose to solve a subset of Producer–consumer problem. One producer, one consumer thread and buffer. The idea of the app to handle correctly database downtimes. The solution is to keep ...
3
votes
0answers
36 views

MySQL JSON diff procedure

I'm building a procedure which compares two JSON objects and return two JSON objects with differences between each (compared keys and values). But I have relatively superficial SQL knowledge, so I ...
1
vote
1answer
101 views

Using encryption/hashing to create a secure login

I am creating a login for an encrypted chat application which retrieves login information from a MySQL database. I have got to the point where I feel pretty confident that (to the best of my knowledge)...
1
vote
1answer
67 views

User registration and authentication using hashed passwords

I'm working on a game project (with Unity) that shall handle user credentials and other data. The game connects send requests to a php script and this script send requests to the database. After ...
3
votes
1answer
50 views

Bash script to backup a LAMP server

I wrote a bash script for backing up my LAMP server. To be honest that's my first experience in bash so I want to ask you for help in its improvement. ...
0
votes
2answers
54 views

Improving/ Optimizing Performance Query in MySQL PHP

I have invoices, invoices_items, order, order_items. <...
1
vote
1answer
81 views

Multiple database connections class

This is my database connection class in order to handle multiple connections with the use of context managers. Brief explanation: The __init__ method reads ...
1
vote
1answer
156 views

PDO login script

Just started using PDO for my newest project. I'd like to get input on how this login script looks and if I should alter it in any way. When the user clicks the link to the index.php page, a script ...
0
votes
0answers
7 views

MySQL insert record to one table to another if postid is not exist

Is there any way to write this query in a better way than this if I want to insert postid from posts table to ...
1
vote
1answer
59 views

Authentication using express-session

I'm making an online shopping store or e-commerce and I use an express session for many things. Example: Shopping Cart, Authentication user* I store the data chart list in the database based on the ...
0
votes
0answers
15 views

Window function in MySQL 8

I'm running the following query on my database: ...
1
vote
2answers
137 views

Simple wrapper for PHP mysqli connection

I'm creating some web apis to sync some data between desktop/mobile apps. Working on it, I wrote a simple wrapper for mysqli connection to simplify querying like: <...
3
votes
1answer
93 views

Authentication system (no browser) with mail verification

I made an authentication system for my software (no browser is used) that works like this: User receives a Key on it's mail after buying the software User registers account using that key and inputs ...
0
votes
0answers
130 views

Doctrine Query with subquery

I'm wondering if this is the right way to have a subquery in Doctrine. I have two entities, one called User and one called Log. ...
2
votes
0answers
59 views

Python graphene-graphql, are global constants for SQL queries a good idea?

For python 3.6.5 using graphene-graphql and mysql-connector Context: I wrote an API using graphene, a python graphQL implementation, this is actually my first time using the graphQL specification so ...
2
votes
3answers
229 views

Adding / updating user info into MySQL database

I'm working on an app that will be used for employee management and I'm using MySQL for the database. You can add employees, view/update/delete them, and on the dashboard I'm listing them in different ...
2
votes
0answers
644 views

MySQL database schema for e-commerce website

I'm making an e-commerce site, using MySQL for storing data. ...
0
votes
1answer
33 views

Get chat message data from table, grouped by date

Giving the following table: ...
1
vote
1answer
76 views

My Python 3.6 script to detect stamp card redeem fraud and prepare a csv report

I have a requirement to write a Python 3.6 script which should be able to detect following case within a time period and be able to create a text file report that lists the condition violated and ...
3
votes
1answer
337 views

PHP code to insert phone number and IP address into a table if not already present

I am currently coding a PHP script that connects to a database and inserts a phone number and IP address if either item is not present in the table. I believe I have completed it and it is working but ...