I am using SQLite and DB Browser for SQLite. I know that if you want to insert a foreign key using the GUI, you just have to scroll to the right and double click to insert the foreign key to the corresponding field. The problem is when you want to use a multiple foreign key. How or where should i put the multiple foreign key constrain using the GUI ? my actual sql is (returns an exception 'foreign key mismatch - "diseases" referencing "beehives"...'):
CREATE TABLE "diseases" (
"id" INTEGER NOT NULL,
"id_beehive" INTEGER NOT NULL,
"id_apiary" INTEGER NOT NULL,
"disease" TEXT NOT NULL,
"treatment" TEXT NOT NULL,
"start_treat_date" DATE NOT NULL,
"end_treat_date" DATE,
PRIMARY KEY("id"),
FOREIGN KEY("id_beehive") REFERENCES "beehives"("number") ON UPDATE CASCADE,
FOREIGN KEY("id_apiary") REFERENCES "beehives"("id_apiary") ON UPDATE CASCADE
);
what i want to do using the gui is:
CREATE TABLE "diseases" (
"id" INTEGER NOT NULL,
"id_beehive" INTEGER NOT NULL,
"id_apiary" INTEGER NOT NULL,
"disease" TEXT NOT NULL,
"treatment" TEXT NOT NULL,
"start_treat_date" DATE NOT NULL,
"end_treat_date" DATE,
PRIMARY KEY("id"),
FOREIGN KEY("id_beehive","id_apiary") REFERENCES "beehives"("number","id_apiary") ON UPDATE CASCADE
);
beehives sql:
CREATE TABLE "beehives" (
"number" INTEGER NOT NULL,
"id_apiary" INTEGER NOT NULL DEFAULT -2,
"date" DATE,
"type" TEXT,
"favorite" BOOLEAN DEFAULT 'false',
PRIMARY KEY("number","id_apiary"),
FOREIGN KEY("id_apiary") REFERENCES "apiaries"("id") ON DELETE SET NULL
);