SQL-Tutorial | A Gentle Introduction to SQL Using SQLite | SQL Database library

I'm setting up a MySQL database following this tutorial. I installed it and successfully initialized an instance with a root password, but I am having trouble connecting to the instance via command line. When I click on the 'mysql' executable under bin, I get this message

I have been trying to execute queries with http://www.github.com/go-sql-driver/mysql and have been following this tutorial: https://tutorialedge.net/golang/golang-mysql-tutorial/

Now this tutorial does everything in 1 custom function, but I've tried to split up opening the database connection and the queries itself in seperate functions. The way I've done this is like this:

Im trying to insert row on my table but, the column "department" only accepts integer. I am using this Tutorial as my guide.

Everything works fine if I change the type of the 4th column (department) to int and insert int on it. But i need string. I already change the type of the said column to VARCHAR but always shows "0" on the table, even if I insert a string.

My Table

Heres my table structure

API.php

I'm in the process of learning React, and one of the steps is learning how to connect to a database using an Express server and a Mysql database. I was doing very well until I got stuck with a tutorial. As I've read many places in Stackoverflow, it seems it's a common thing that tutorial about all this assume a certain level by the learner. It's one of those cases.

Instead of wasting your time with parts of the problem that aren't really important, I'll just ask about the precise part where I'm stuck. The tutorial I'm following is the following: https://www.edureka.co/blog/node-js-mysql-tutorial/

Everything was going smoothly until I came to the part where it says: "Type in the below codes to define all the required routines:

learnerAddOrEdit"

First, you have to create the procedure:

Is the BEFORE trigger statement executed before DDL statements or is it inside a DDL statement?

I'm building a small DBMS and currently developing the DDL, and I'm confused about handling the BEFORE statement.

Here's not a defined behaviour for it:

https://web.csulb.edu/colleges/coe/cecs/dbdesign/dbdesign.php?page=sql/ddldml.php

Oracle describes the behaviour but not what can come inside the preceding or following trigger or whether they can be DDL statements or not:

https://www.oracletutorial.com/plsql-tutorial/oracle-trigger/

The ff. example is taken from: https://www.datenbanken-verstehen.de/sql-tutorial/sql-between-befehl/

Just started to learn SQL in R. I want to get a list of dates in between those two dates as set out in 'newdf.Mitarbeiter4'. Can anyone please help me pointing out the mistake in my query? There are similar questions about this query, but somehow I still could not use the answers in identifying my mistake.

So, I'm new to Laravel and I'm currently following the tutorial from techdiaries (https://www.techiediaries.com/php-laravel-crud-mysql-tutorial/)

I haven't really got any experience using Laravel or any frameworks but I'm experienced in PHP and this is the first attempt at Laravel.

I'm getting the following message:

ErrorException array_merge(): Argument #2 is not an array

When I view http://localhost/laravel-first-crud-app/public/

I was following this tutorial for the CRUD Operations: https://www.techiediaries.com/php-laravel-crud-mysql-tutorial/

I am getting this error while running the application after integrating the complete tutorial.

Undefined variable: contacts (View: MyCrud/resources/views/contacts/index.blade.php)

My Controller is as below ContactController.php:

I am new to spring security. I was trying to creating my first project using spring boot and spring security with the help of this tutorial

In UserServiceImpl file there is a function mapRolesToAuthorities, it takes Collection < Role > roles as a parameter.

Now the problem is, when I try to stream and map the roles like this