weiro/sql/schema/04_categories.up.sql

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CREATE TABLE categories (
id INTEGER PRIMARY KEY AUTOINCREMENT,
site_id INTEGER NOT NULL,
guid TEXT NOT NULL,
name TEXT NOT NULL,
slug TEXT NOT NULL,
description TEXT NOT NULL DEFAULT '',
created_at INTEGER NOT NULL,
updated_at INTEGER NOT NULL,
FOREIGN KEY (site_id) REFERENCES sites (id) ON DELETE CASCADE
);
CREATE INDEX idx_categories_site ON categories (site_id);
CREATE UNIQUE INDEX idx_categories_guid ON categories (guid);
CREATE UNIQUE INDEX idx_categories_site_slug ON categories (site_id, slug);
CREATE TABLE post_categories (
post_id INTEGER NOT NULL,
category_id INTEGER NOT NULL,
PRIMARY KEY (post_id, category_id),
FOREIGN KEY (post_id) REFERENCES posts (id) ON DELETE CASCADE,
FOREIGN KEY (category_id) REFERENCES categories (id) ON DELETE CASCADE
);
CREATE INDEX idx_post_categories_category ON post_categories (category_id);