1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
|
SELECT a.cpe_id,
a.cpe23,
COALESCE(c.titles, '[]') AS titles,
COALESCE(d.refs, '[]') AS refs,
b.rank
FROM cpes a
JOIN (
-- limit to "best" match (e.g., lowest rank) for given CPE
-- NOTE: it's not clear to me whether cross-index bm25()
-- comparisons are valid
SELECT cpe_id,
MIN(rank) AS rank
FROM cpe_fts_all a
WHERE cpe_fts_all 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
|
