mirror of
https://github.com/perlbot/perlbuut
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27 lines
1.6 KiB
SQL
27 lines
1.6 KiB
SQL
WITH RECURSIVE factoid_lookup_order (depth, namespace, server, alias_namespace, alias_server, parent_namespace, parent_server, recursive) AS (
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SELECT 0 AS depth, namespace, server, alias_namespace, alias_server, parent_namespace, parent_server, recursive
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FROM factoid_config
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WHERE namespace = '#perlbot' AND server = 'freenode.net' -- PLACEHOLDER TARGET
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UNION ALL
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SELECT p.depth+1 AS depth, m.namespace, m.server, m.alias_namespace, m.alias_server, m.parent_namespace, m.parent_server, m.recursive
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FROM factoid_config m
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INNER JOIN factoid_lookup_order p
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ON m.namespace = p.parent_namespace AND m.server = p.parent_server AND p.recursive
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),
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get_latest_factoid (depth, factoid_id, subject, copula, predicate, author, modified_time, compose_macro, protected, original_subject, deleted, server, namespace) AS (
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SELECT DISTINCT ON(lo.depth) lo.depth, factoid_id, subject, copula, predicate, author, modified_time, compose_macro, protected, original_subject, f.deleted, f.server, f.namespace
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FROM factoid f
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INNER JOIN factoid_lookup_order lo
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ON COALESCE(f.server, '') = COALESCE(lo.alias_server, lo.server)
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AND COALESCE(f.namespace, '') = COALESCE(lo.alias_namespace, lo.namespace)
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WHERE original_subject = 'hi' -- PLACEHOLDER TARGET
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ORDER BY depth ASC, factoid_id DESC
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)
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SELECT * FROM get_latest_factoid WHERE NOT deleted ORDER BY depth ASC, factoid_id DESC LIMIT 1;
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-- SELECT factoid_id, subject, copula, predicate, author, modified_time, compose_macro, protected, original_subject
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-- FROM factoid
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-- WHERE original_subject = ?
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-- ORDER BY factoid_id DESC
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