Add v0.1-v0.2.sql upgrade script

db/upgrade/v0.1-v0.2.sql

@@ -0,0 +1,51 @@
+BEGIN;
+
+UPDATE version SET minor = 2;
+
+CREATE TABLE requestMetadata (
+       url varchar NOT NULL UNIQUE,
+       videoTitle varchar DEFAULT NULL,
+       PRIMARY KEY (url),
+       FOREIGN KEY (url) REFERENCES requests(url) ON DELETE CASCADE
+);
+
+DROP VIEW requests_vw;
+CREATE VIEW requests_vw AS
+    SELECT url,COALESCE(videoTitle,url) AS title,displayName AS requester,imageUrl,state,score,reqTimestamp FROM requests
+        JOIN requestMetadata USING (url)
+        JOIN scores USING (url)
+        JOIN users ON requests.requester = users.userid
+        ORDER BY score DESC, reqTimestamp ASC;
+
+DROP FUNCTION get_requests_voted;
+CREATE FUNCTION get_requests_voted(votinguserid int)
+    RETURNS TABLE (
+        url varchar,
+        title varchar,
+        requester varchar,
+        imageUrl varchar,
+        state varchar,
+        score int,
+        reqTimestamp timestamptz,
+        voted bool
+    )
+    LANGUAGE SQL
+    AS $$
+        SELECT url,title,requester,imageUrl,state,score,reqTimestamp,
+                (CASE WHEN votes.userid IS NULL THEN FALSE ELSE TRUE END) AS voted
+            FROM requests_vw
+            LEFT JOIN votes ON (requests_vw.url = votes.requesturl AND votes.userid = votinguserid)
+            ORDER BY score DESC, reqTimestamp ASC;
+    $$;
+
+CREATE OR REPLACE PROCEDURE add_request(url varchar,requester int)
+    LANGUAGE SQL
+    AS $$
+        INSERT INTO requests (url,requester) VALUES (url,requester);
+        INSERT INTO requestMetadata (url) VALUES (url);
+        INSERT INTO scores (url) VALUES (url);
+        INSERT INTO votes (requesturl,userid) VALUES (url,requester);
+        CALL update_scores();
+    $$;
+
+COMMIT;