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Add unique constraint in relational tables.

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Nicolás A. Ortega Froysa 2024-10-12 11:02:56 +02:00
parent c71467804e
commit 03b1250006
1 changed files with 2 additions and 2 deletions
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4
src/db.cpp
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@ -55,8 +55,8 @@ void db::open(void) {
sqlite3_exec(sqlite_db, "CREATE TABLE tags(id INTEGER PRIMARY KEY AUTOINCREMENT, name STRING UNIQUE);", nullptr, nullptr, nullptr);
sqlite3_exec(sqlite_db, "CREATE TABLE ingredients(id INTEGER PRIMARY KEY AUTOINCREMENT, name STRING UNIQUE);", nullptr, nullptr, nullptr);
sqlite3_exec(sqlite_db, "CREATE TABLE recipes(id INTEGER PRIMARY KEY AUTOINCREMENT, name STRING UNIQUE, description STRING);", nullptr, nullptr, nullptr);
sqlite3_exec(sqlite_db, "CREATE TABLE recipe_tag(recipe_id INTEGER REFERENCES recipes(id) ON DELETE CASCADE, tag_id INTEGER REFERENCES tags(id) ON DELETE CASCADE);", nullptr, nullptr, nullptr);
sqlite3_exec(sqlite_db, "CREATE TABLE recipe_ingredient(recipe_id INTEGER REFERENCES recipes(id) ON DELETE CASCADE, ingredient_id INTEGER REFERENCES ingredients(id) ON DELETE CASCADE);", nullptr, nullptr, nullptr);
sqlite3_exec(sqlite_db, "CREATE TABLE recipe_tag(recipe_id INTEGER REFERENCES recipes(id) ON DELETE CASCADE, tag_id INTEGER REFERENCES tags(id) ON DELETE CASCADE, UNIQUE(recipe_id, tag_id));", nullptr, nullptr, nullptr);
sqlite3_exec(sqlite_db, "CREATE TABLE recipe_ingredient(recipe_id INTEGER REFERENCES recipes(id) ON DELETE CASCADE, ingredient_id INTEGER REFERENCES ingredients(id) ON DELETE CASCADE, UNIQUE(recipe_id, ingredient_id));", nullptr, nullptr, nullptr);
}
}