Skip to main content

Items tagged with: SQL

Search

Items tagged with: SQL


I'm going to throw this out there:

I'm looking for a #webdev internship for 6mos to complete my bachelor's here in France - this can be remote, I mainly hope for kindness.

I've worked with #php #Laravel #WordPress #angular #sql & more - I'm very open 😀


Question for the #MySQL / #MariaDB buffs, I have three tables defined thus:
CREATE TABLE IF NOT EXISTS `user` (
	`uid` mediumint unsigned NOT NULL auto_increment COMMENT 'sequential ID',
	...
	 PRIMARY KEY(`uid`)
);
CREATE TABLE IF NOT EXISTS `gserver` (
	`id` int unsigned NOT NULL auto_increment COMMENT 'sequential ID',
	...
	 PRIMARY KEY(`id`)
);

CREATE TABLE IF NOT EXISTS `user-gserver` (
	`uid` mediumint unsigned NOT NULL DEFAULT 0 COMMENT 'Owner User id',
	`gsid` mediumint unsigned NOT NULL DEFAULT 0 COMMENT 'Gserver id',
	...
	PRIMARY KEY(`uid`,`gsid`),
	FOREIGN KEY (`uid`) REFERENCES `user` (`uid`) ON UPDATE RESTRICT ON DELETE CASCADE,
	FOREIGN KEY (`gsid`) REFERENCES `gserver` (`id`) ON UPDATE RESTRICT ON DELETE CASCADE
);

Running the last query triggers the error Foreign key constraint is incorrectly formed. Is there no way to reference multiple tables in foreign keys out of a compound primary key?

#SQL #Database #DBA