add usersnet_narrowfriend view

[brisk.git] / sql / sql.d / 075-users-network.sql

diff --git a/sql/sql.d/075-users-network.sql b/sql/sql.d/075-users-network.sql
index 9356b37..a371ec5 100644 (file)
--- a/sql/sql.d/075-users-network.sql
+++ b/sql/sql.d/075-users-network.sql
@@ -8,8 +8,9 @@ CREATE TABLE #PFX#usersnet (
        target     integer REFERENCES #PFX#users (code)
                   ON DELETE cascade ON UPDATE cascade, -- evaluated user
        friend     integer,                             -- friendship level
-       skill      integer,                             -- skill level
-       trust      integer,                             -- auth
+                       -- 1"black", 2"unknown", 3"test", 4"friend", 5"bff"
+       skill      float,                               -- skill level
+       trust      float,                               -- auth
        ctime      timestamp DEFAULT now(),             -- creation time
        mtime      timestamp DEFAULT to_timestamp(0)    -- modification time
        );
@@ -17,8 +18,47 @@ CREATE TABLE #PFX#usersnet (
 DROP INDEX IF EXISTS #PFX#usersnet_owner_idx;
 DROP INDEX IF EXISTS #PFX#usersnet_target_idx;
 DROP INDEX IF EXISTS #PFX#usersnet_owner_target_idx;
+
 CREATE INDEX #PFX#usersnet_owner_idx ON #PFX#usersnet (owner);
 CREATE INDEX #PFX#usersnet_target_idx ON #PFX#usersnet (target);
-CREATE UNIQUE INDEX #PFX#usersnet_owner_target_idx ON #PFX#usersnet (owner,target);
+CREATE UNIQUE INDEX #PFX#usersnet_owner_target_idx ON #PFX#usersnet (owner, target);
+
+DROP VIEW #PFX#usersnet_widefriend;
+CREATE VIEW #PFX#usersnet_widefriend
+    AS SELECT un.owner, ur.target, ur.friend, count(*) as count
+        FROM #PFX#usersnet AS un, #PFX#usersnet AS ur
+        WHERE un.target = ur.owner AND un.friend >= 4  -- 'un' is, at least, our friend
+        GROUP BY un.owner, ur.target, ur.friend;
+
+DROP VIEW #PFX#usersnet_narrowfriend;
+CREATE VIEW #PFX#usersnet_narrowfriend
+    AS SELECT un.owner, ur.target, ur.friend, count(*) as count
+        FROM #PFX#usersnet AS un, #PFX#usersnet AS ur
+        WHERE un.target = ur.owner AND un.friend >= 5  -- 'un' is, at least, our friend
+        GROUP BY un.owner, ur.target, ur.friend;
+
+DROP VIEW #PFX#usersnet_wideskill;
+CREATE VIEW #PFX#usersnet_wideskill
+    AS SELECT un.owner, ur.target, SUM(ur.skill * un.trust) / SUM(un.trust) as skill, count(*) as count
+        FROM #PFX#usersnet AS un, #PFX#usersnet AS ur
+        WHERE un.target = ur.owner AND un.friend >= 4  -- 'un' is, at least, our friend
+        GROUP BY un.owner, ur.target;
 
+DROP VIEW #PFX#usersnet_narrowskill;
+CREATE VIEW #PFX#usersnet_narrowskill
+    AS SELECT un.owner AS owner, ur.target AS target, SUM(ur.skill * un.trust) / SUM(un.trust) AS skill,
+           COUNT(*) AS count,
+           SUM(CASE WHEN ur.friend = 1 THEN 1 ELSE 0 END) AS black  -- count number of friend
+                                                                    -- blacklisting the target
+           FROM #PFX#usersnet AS un, #PFX#usersnet as ur
+           WHERE un.target = ur.owner AND un.friend = 5             -- ur owner must be bbf of un.owner
+           GROUP BY un.owner, ur.target HAVING SUM(CASE WHEN ur.friend = 1 THEN 1 ELSE 0 END) = 0;
 
+DROP VIEW #PFX#usersnet_party;
+CREATE VIEW #PFX#usersnet_party
+    AS  (SELECT ns.* FROM #PFX#usersnet_narrowskill AS ns
+              -- all except targets managed directly by the owner
+              WHERE target NOT IN (SELECT target FROM #PFX#usersnet WHERE owner = ns.owner)
+          UNION ALL
+         (SELECT owner, target, skill, 1 AS count, 0 AS black FROM #PFX#usersnet
+             WHERE friend > 2)) ORDER BY target;