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(Attempt to) stop jumping markers for duplicate wiki pages #1922

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(Attempt to) stop jumping markers for duplicate wiki pages #1922

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20 changes: 4 additions & 16 deletions analysers/analyser_osmosis_wikipedia.py
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Original file line number Diff line number Diff line change
Expand Up @@ -26,44 +26,34 @@
sql10 = """
SELECT
(array_agg(tid))[1:10],
ST_AsText(any_locate((array_agg(type))[1], (array_agg(id))[1])),
ST_AsText(any_locate(substring(MIN(tid), 1, 1), substring(MIN(tid), 2)::bigint)),
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It is not the min as expected, because it compare on strings.

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@Famlam Famlam Jun 26, 2023 •
edited
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Ah, true, n56789 would be after n100000. I've updated the initial post.
However, my goal was just to have a stable output (as long as no object is added/removed) to get rid of the jumping markers, so whether it's alphabetically the first or numerically the first should not make a difference, right?

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I think older is more stable.
It just about concatenate type later.

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@Famlam Famlam Jun 26, 2023 •
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Not sure how to get the oldest element.
If I add a new way today, the ID will be around 1185000000. A node with the same ID would be 12 years old. And a relation with that ID doesn't exist yet. So comparison by id will not retrieve the oldest element

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Just order by type and id will do the job. The older by type is sufficient, isn't it ?

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I'll have another look at a later moment.

Just calling ORDER BY won't work, since I can't add id or type to GROUP BY or it'll be filtered out. Probably have to modify the COUNT

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Nope, also with COUNT(w) it doesn't work. Probably I misunderstood what you meant @frodrigo, where would I have to call the ORDER BY type, id?

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Actually, the issue ID changes anyway if elements are added or deleted, right? So is it really needed to be the same element every time, also when elements are added? (Of course, the jumping when there's no changes must be fixed)

w
FROM ((
SELECT
tags->'wikipedia' AS w,
'N' || id AS tid,
'N' AS type,
id
'N' || id AS tid
FROM
nodes
WHERE
tags != ''::hstore AND
tags?'wikipedia' AND
NOT tags->'wikipedia' LIKE '%#%' AND
NOT tags?| ARRAY['highway', 'railway', 'waterway', 'power', 'place', 'shop', 'network', 'operator']
ORDER BY
id
) UNION ALL (
SELECT
tags->'wikipedia' AS w,
'W' || id AS tid,
'W' AS type,
id
'W' || id AS tid
FROM
ways
WHERE
tags != ''::hstore AND
tags?'wikipedia' AND
NOT tags->'wikipedia' LIKE '%#%' AND
NOT tags?| ARRAY['highway', 'railway', 'waterway', 'power', 'place', 'shop', 'network', 'operator']
ORDER BY
id
) UNION ALL (
SELECT
tags->'wikipedia' AS w,
'R' || id AS tid,
'R' AS type,
id
'R' || id AS tid
FROM
relations
WHERE
Expand All @@ -72,8 +62,6 @@
NOT tags->'wikipedia' LIKE '%#%' AND
NOT tags->'type' IN ('route', 'boundary') AND
NOT tags?| ARRAY['highway', 'railway', 'waterway', 'power', 'place', 'shop', 'network', 'operator']
ORDER BY
id
)) AS t
GROUP BY
w
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