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WITH T AS (
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SELECT
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sum(CASE WHEN relkind IN ('r', 't', 'm') THEN pg_stat_get_numscans(oid) END) seq,
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sum(CASE WHEN relkind = 'i' THEN pg_stat_get_numscans(oid) END) idx
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FROM pg_class
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WHERE relkind IN ('r', 't', 'm', 'i')
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)
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SELECT row_to_json(T)
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FROM T
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