The problem is the compatibility of older versions of MySQL Connector/J with MySQL 8. You need to upgrade to either MySQL Connector/J 5.1.46 or – better – 8.0.11 (or a higher version).
Alternative ways to write these options. You can write mysql -u “$MYSQL_ROOT” -p”$MYSQL_PASS” -e “SHOW DATABASES” If [password is] given, there must be no space between –password= or -p and the password following it. If no password option is specified, the default is to send no password. to pass empty strings as separate arguments. Your … Read more
Certain issues need to be clarified and resolved before we can enter into a reasonable discussion. Pre-requisite Resolution Labels In a profession that demands precision, it is important that we use precise labels, to avoid confusion, and so that we can communicate without having to use long-winded descriptions and qualifiers. What you have posted as … Read more
$ mysql –version mysql Ver 14.14 Distrib 5.1.45, for apple-darwin10.2.0 (i386) using readline 6.2 $ echo ‘\s’ | mysql ————– mysql Ver 14.14 Distrib 5.1.45, for apple-darwin10.2.0 (i386) using readline 6.2 Connection id: 105730 […] Server version: 5.1.41 MySQL Community Server (GPL) […] Uptime: 11 days 4 hours 2 min 6 sec Threads: 2 Questions: … Read more
I think you’re misunderstanding what ON DELETE NO ACTION means. It does not mean to suppress the foreign-key constraint. When you delete a record that is referred to by a foreign key, InnoDB has the ability to take an automatic action to rectify the situation: it can CASCADE, meaning, delete the referring record. (This would … Read more
Joins are used to combine two related tables together. In your example, you can combine the Employee table and the Department table, like so: SELECT FNAME, LNAME, DNAME FROM EMPLOYEE INNER JOIN DEPARTMENT ON EMPLOYEE.DNO=DEPARTMENT.DNUMBER This would result in a recordset like: FNAME LNAME DNAME —– —– —– John Smith Research John Doe Administration I … Read more
If you encounter this error again after upgrading to 12.04 (or for people arriving here after googling the title of this page after upgrading to 12.04), the following worked for me: gem uninstall mysql2 gem install mysql2 This will recompile the gem using libmysqlclient18, and worked for me.
Here’s what I would install, especially if you want to use homebrew: XCode and the command line tools (as suggested by @7stud, @kjti) Install homebrew brew install mysql-connector-c pip install mysql-python
Since increments() creates an unsigned integer column, you need to define the foreign key column as unsigned integer too. Default migrations in Laravel 6+ use bigIncrements(), so you need to use unsignedBigInteger() method: $table->unsignedBigInteger(‘order_id’); https://laravel.com/docs/6.x/migrations#foreign-key-constraints For default migrations in older versions of Laravel use unsignedInteger() method: $table->unsignedInteger(‘order_id’); Or: $table->integer(‘order_id’)->unsigned(); https://laravel.com/docs/5.5/migrations#foreign-key-constraints
Try this: SELECT max(salary) FROM emptable WHERE salary < (SELECT max(salary) FROM emptable);