FrostByte/server/migrations/0003_comments_table.sql
2024-03-22 19:47:36 +01:00

45 lines
No EOL
1.5 KiB
PL/PgSQL

CREATE TABLE IF NOT EXISTS comments (
id SERIAL PRIMARY KEY NOT NULL,
parent_post_id BIGINT NOT NULL,
-- parent_comment_id BIGINT,
author_user_id BIGINT NOT NULL,
content TEXT NOT NULL,
created_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
updated_at TIMESTAMP NOT NULL DEFAULT CURRENT_TIMESTAMP,
FOREIGN KEY (parent_post_id) REFERENCES posts (id),
-- FOREIGN KEY (parent_comment_id) REFERENCES comments (id),
FOREIGN KEY (author_user_id) REFERENCES users (id)
);
-- Create a function to set created_at and updated_at on INSERT
CREATE OR REPLACE FUNCTION comments_set_timestamps_on_insert() RETURNS TRIGGER AS $$
BEGIN
NEW.created_at = NOW();
NEW.updated_at = NOW();
RETURN NEW;
END;
$$ LANGUAGE plpgsql;
-- Create a trigger to call the function after INSERT
CREATE TRIGGER comments_set_timestamps_on_insert
BEFORE INSERT ON posts
FOR EACH ROW
EXECUTE FUNCTION set_timestamps_on_insert();
-- Create a function to set updated_at on UPDATE
CREATE OR REPLACE FUNCTION comments_set_updated_at() RETURNS TRIGGER AS $$
BEGIN
NEW.updated_at = NOW();
RETURN NEW;
END;
$$ LANGUAGE plpgsql;
-- Create a trigger to call the function after UPDATE
CREATE TRIGGER comments_set_updated_at
BEFORE UPDATE ON posts
FOR EACH ROW
EXECUTE FUNCTION comments_set_updated_at();
CREATE INDEX comments_parent_post_id_index ON comments (parent_post_id);
-- CREATE INDEX comments_parent_comment_id_index ON comments (parent_comment_id);
CREATE INDEX comments_user_id_index ON comments (author_user_id);