From 425d2a2aa3e3d4ebb1cbf60982ef7a699dd79d97 Mon Sep 17 00:00:00 2001
From: Paul Duncan <pabs@pablotron.org>
Date: Sat, 5 Feb 2022 02:34:41 -0500
Subject: internal/dbstore/sql: populate cpe search sql

---
 internal/dbstore/sql/cpe-search-ref.sql | 47 +++++++++++++++++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 internal/dbstore/sql/cpe-search-ref.sql

(limited to 'internal/dbstore/sql/cpe-search-ref.sql')

diff --git a/internal/dbstore/sql/cpe-search-ref.sql b/internal/dbstore/sql/cpe-search-ref.sql
new file mode 100644
index 0000000..a2d3be6
--- /dev/null
+++ b/internal/dbstore/sql/cpe-search-ref.sql
@@ -0,0 +1,47 @@
+SELECT a.cpe_id,
+       a.cpe23,
+       COALESCE(c.titles, '[]') AS titles,
+       COALESCE(d.refs, '[]') AS refs,
+       b.rank
+
+  -- find matching cpes
+  FROM cpes a
+  JOIN (
+    -- there can be multiple matching references for a given
+    -- CPE, so use MIN() to limit the match to the most
+    -- "relevant", according to bm25()
+    SELECT cpe_id,
+           MIN(rank) AS rank
+      FROM cpe_fts_refs
+     WHERE cpe_fts_refs MATCH :q
+     GROUP BY cpe_id
+  ) b ON (b.cpe_id = a.cpe_id)
+
+  -- get all titles, grouped by cpe
+  LEFT JOIN (
+    SELECT cpe_id,
+           json_group_array(json_object(
+             'lang', lang,
+             'text', val
+           )) AS titles
+
+      FROM cpe_titles
+
+     GROUP BY cpe_id
+  ) c ON (c.cpe_id = b.cpe_id)
+
+  -- get all refs, grouped by cpe
+  LEFT JOIN (
+    SELECT cpe_id,
+           json_group_array(json_object(
+             'href', href,
+             'text', val
+           )) AS refs
+
+      FROM cpe_refs
+
+     GROUP BY cpe_id
+  ) d ON (d.cpe_id = b.cpe_id)
+
+ -- order by rank
+ ORDER BY b.rank
-- 
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