Initial commit

service/data/cache.sql

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+with
+  pair_cutoff_dates as (
+    select
+      case
+        when a1.name < a2.name then a1.name
+        else a2.name
+      end as name1,
+      case
+        when a1.name < a2.name then a2.name
+        else a1.name
+      end as name2,
+      MAX(a1.date) as cutoff_date
+    from
+      achievements a1
+      join achievements a2 on a1.id = a2.id
+      and a1.date = a2.date
+      and a1.completed = a2.completed
+      and a1.name != a2.name
+    group by
+      case
+        when a1.name < a2.name then a1.name
+        else a2.name
+      end,
+      case
+        when a1.name < a2.name then a2.name
+        else a1.name
+      end
+  ),
+  matching_achievements as (
+    select
+      pcd.name1,
+      pcd.name2,
+      pcd.cutoff_date,
+      count(*) as matching_count
+    from
+      achievements a1
+      join achievements a2 on a1.id = a2.id
+      and a1.date = a2.date
+      and a1.completed = a2.completed
+      join pair_cutoff_dates pcd on (
+        a1.name = pcd.name1
+        and a2.name = pcd.name2
+      )
+    where
+      a1.date <= pcd.cutoff_date
+    group by
+      pcd.name1,
+      pcd.name2,
+      pcd.cutoff_date
+  ),
+  achievement_counts as (
+    select
+      name,
+      count(*) as total_achievements
+    from
+      achievements
+    group by
+      name
+  )
+insert or replace into
+  similar_pairs (
+    name1,
+    name2,
+    matching_count,
+    total_achievements1,
+    total_achievements2,
+    similarity_percentage,
+    cutoff_date
+  )
+select
+  m.name1,
+  m.name2,
+  m.matching_count,
+  ac1.total_achievements,
+  ac2.total_achievements,
+  CAST(m.matching_count as REAL) * 100.0 / MIN(ac1.total_achievements, ac2.total_achievements) as similarity_percentage,
+  m.cutoff_date
+from
+  matching_achievements m
+  join achievement_counts ac1 on m.name1 = ac1.name
+  join achievement_counts ac2 on m.name2 = ac2.name
+where
+  m.matching_count >= 10
+  and CAST(m.matching_count as REAL) * 100.0 / MIN(ac1.total_achievements, ac2.total_achievements) >= 70.0;