use bigserial for user_id on entries, update SimilarEntries to include headline

sql/queries/queries.sql

@@ -19,10 +19,14 @@ DELETE FROM entries
 WHERE entry_id = $1;
 
 -- name: SimilarEntries :many
-SELECT entry_id, similarity(body, $1) AS sml
-  FROM entries
-  WHERE body % $1
-  ORDER BY sml DESC, body;
+SELECT entry_id, similarity(body, $2) as similarity,
+	ts_headline('english', body, q) as headline,
+	title from entries,
+	plainto_tsquery($2) q
+WHERE user_id = $1 and
+	similarity(body, $2) > 0.0
+	order by similarity DESC
+	LIMIT 10;
 
 -- name: CreateUser :one
 INSERT INTO users (

sql/schema/schema.sql

@@ -18,15 +18,15 @@ CREATE TABLE users (
 );
 
 CREATE TABLE entries (
-	entry_id	UUID		NOT NULL default gen_random_uuid() PRIMARY KEY,
-	user_id		int		NOT NULL REFERENCES users ON DELETE CASCADE,
+	entry_id	UUID		NOT NULL default gen_random_uuid() PRIMARY KEY UNIQUE,
+	user_id		BIGSERIAL	NOT NULL REFERENCES users ON DELETE CASCADE,
 	created_at	timestamp 	NOT NULL DEFAULT NOW(),
 	updated_at	timestamp,
 	title		text		NOT NULL DEFAULT '',
 	body		text		NOT NULL DEFAULT ''
 );
 
-CREATE INDEX body_idx ON entries USING GIN (body gin_trgm_ops);
+CREATE INDEX body_trgm_idx ON entries USING gist (body gist_trgm_ops);
 
 CREATE OR REPLACE FUNCTION hash(password text) RETURNS text AS $$
 	SELECT crypt(password, gen_salt('bf', 10));